2024

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22 pages, 36742 KiB

Open AccessArticle

Eco-Environmental Risk Assessment and Its Precaution Partitions Based on a Knowledge Graph: A Case Study of Shenzhen City, China

by Yijia Yang and Xuexin Zhu

Sustainability 2024, 16(2), 909; https://doi.org/10.3390/su16020909 - 21 Jan 2024

Viewed by 622

Abstract

The eco-environment is under constant pressure caused by the rapid pace of urbanization and changes in land use. Shenzhen is a typical “small-land-area, high-density” megalopolis facing various dilemmas and challenges; we must understand the eco-environmental risk (ER) of rapidly urbanizing regions and promote [...] Read more.

The eco-environment is under constant pressure caused by the rapid pace of urbanization and changes in land use. Shenzhen is a typical “small-land-area, high-density” megalopolis facing various dilemmas and challenges; we must understand the eco-environmental risk (ER) of rapidly urbanizing regions and promote high-quality regional development. Therefore, with the help of the Python and Neo4j platforms, this study applies the theoretical foundation of knowledge graphs (KGs) and deep learning to form the KG of an ER; with this, we sort and establish an evaluation system in two dimensions, namely social and ecological, and introduce the Monte Carlo simulation to quantify the ER in Shenzhen City and its uncertainty from 2000 to 2020 to propose sub-regional programs and targeted measures for the prevention and control of the ER. The results are as follows: The eco-environmental risk index (ERI) of the study area as a whole showed a slight increase from 2000 to 2020; at the same time, the low-risk regions were mainly located in the east and southeast, while the high-risk regions were mainly located in the west–central and northwestern parts. In addition, three sample points (points A, B, and C) were selected using the Monte Carlo method to simulate the transfer of uncertainty from the indicator weights to the assessment results. Finally, based on the quantitative results, an accurate zoning scheme for ER prevention and control was provided to the decision makers, and appropriate countermeasures were proposed. Full article

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2023

Jump to: 2024, 2021, 2020, 2019, 2018, 2017

16 pages, 21445 KiB

Open AccessArticle

Investigation of a SWAT Model for Environmental Health Management Based on the Water Quality Parameters of a Stream System in Central Anatolia (Türkiye)

by Eren Germeç and Okan Ürker

Sustainability 2023, 15(18), 13850; https://doi.org/10.3390/su151813850 - 18 Sep 2023

Viewed by 729

Abstract

Water is one of the most critical factors affecting environmental health. Therefore, it is essential to be able to predict water behavior in nature and prevent water pollution to avoid environmental health problems. In order to predict the behavior of water, the hydrological [...] Read more.

Water is one of the most critical factors affecting environmental health. Therefore, it is essential to be able to predict water behavior in nature and prevent water pollution to avoid environmental health problems. In order to predict the behavior of water, the hydrological cycle needs to be evaluated at the basin level. To this aim, hydrological models can be used to obtain mathematical representations of hydrological processes. These models allow the anticipation and monitoring of issues regarding water quality, pollution, sediment transport, and proliferation of oil, and petroleum derivatives, among others, which can affect environmental health. In this study, a 2D surface water model was created using the soil and water assessment tool (SWAT) to simulate the lotic ecosystem and present water quality in the Tatlıçay Basin and to propose solutions for improving environmental health in the Cankiri provincial center in Türkiye. The accuracy of the input data and the validity of the model were tested with calibration and validation studies by using monthly or trimonthly observation data obtained from the flow observation and water quality stations of the General Directorate of State Hydraulic Works from 2016 to 2020. The aim was to create a model able to provide fast, accurate, and practical solutions in the face of water-related and environmental issues. The calibration and validation of this model were successfully carried out with very few observation data. Since surface water models are dynamic, long-term daily or monthly flow and water quality measurements should increase the accuracy of their predictions. Additionally, in the presence of pollution sources that may affect environmental health, monitoring and analyses of their possible effects should be carried out. As one of the few studies from the Middle East describing a hydrological model, this research makes a significant contribution to the literature on environmental health. Full article

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2021

Jump to: 2024, 2023, 2020, 2019, 2018, 2017

15 pages, 927 KiB

Open AccessArticle

Valuable Secondary Habitats or Hazardous Ecological Traps? Environmental Risk Assessment of Minor and Trace Elements in Fly Ash Deposits across the Czech Republic

by Eliška Chmelová, Vojtech Kolar, Jiří Jan, Bruno M. Carreira, Andrea Landeira-Dabarca, Šárka Otáhalová, Martina Poláková, Lucie Vebrová, Jakub Borovec, David S. Boukal and Robert Tropek

Sustainability 2021, 13(18), 10385; https://doi.org/10.3390/su131810385 - 17 Sep 2021

Cited by 4 | Viewed by 2570

Abstract

Deposits of coal combustion wastes, especially fly ash, are sources of environmental and health risks in industrial regions. Recently, fly ash deposits have been reported as habitat surrogates for some threatened arthropods in Central Europe. However, the potential environmental risks of fly ash [...] Read more.

Deposits of coal combustion wastes, especially fly ash, are sources of environmental and health risks in industrial regions. Recently, fly ash deposits have been reported as habitat surrogates for some threatened arthropods in Central Europe. However, the potential environmental risks of fly ash have not yet been assessed in the region. We analysed concentrations of 19 minor and trace elements in 19 lignite combustion waste deposits in the Czech Republic. We assessed their environmental risks by comparison with the national and EU legislation limits, and with several commonly used indices. Over 50% of the samples exceeded the Czech national limits for As, Cu, V, or Zn, whilst only V exceeded the EU limits. For some studied elements, the high-risk indices were detected in several localities. Nevertheless, the measured water characteristics, the long-term presence of fly ash, previous leaching by acid rains, and the low amount of organic matter altogether can infer low biological availability of these elements. We presume the revealed high concentrations of some heavy metals at some studied sites can be harmful for some colonising species. Nevertheless, more ecotoxicological research on particular species is needed for final decision on their conservation potential for terrestrial and freshwater biota. Full article

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16 pages, 2696 KiB

Open AccessArticle

Characteristics of Heavy Metals in Seawater and Sediments from Daya Bay (South China): Environmental Fates, Source Apportionment and Ecological Risks

by Wei Tao, Haidong Li, Xiaojuan Peng, Wanping Zhang, Quansheng Lou, Jian Gong and Jianjun Ye

Sustainability 2021, 13(18), 10237; https://doi.org/10.3390/su131810237 - 14 Sep 2021

Cited by 9 | Viewed by 2006

Abstract

In this study, the spatiotemporal distributions, potential sources, and ecological risks of Hg, Cr, and As in seawater, and Hg, As, Zn, Cd, Pb, and Cu in sediments from Daya Bay were investigated. The five-year average concentrations of Hg, Cr, and As in [...] Read more.

In this study, the spatiotemporal distributions, potential sources, and ecological risks of Hg, Cr, and As in seawater, and Hg, As, Zn, Cd, Pb, and Cu in sediments from Daya Bay were investigated. The five-year average concentrations of Hg, Cr, and As in seawater were 0.020 μg/L, 0.79 μg/L, and 2.08 μg/L, respectively. The five-year average concentrations of Hg, As, Zn, Cd, Pb, and Cu in surface sediments were 0.04 mg/kg, 7.34 mg/kg, 63.81 mg/kg, 0.23 mg/kg, 25.60 mg/kg, and 11.78 mg/kg, respectively. Annual variations in Hg, Cr, and As in seawater exhibited different trends. HMs in sediments, such as As, Zn, Pb, and Cu, exhibited similar annual variations, whereas Hg and Cd exhibited different annual variations. The spatial distribution of metal species in seawater and sediments showed significant variability, and the concentrations decreased gradually from the coast to the open sea. The comprehensive potential ecological hazard index (RI) of HMs in sediments indicated a relatively high risk, especially for Hg and Cd contamination. The geoaccumulation indices (I_geo) of As, Zn, Pb, and Cu suggested that these metals did not pollute Daya Bay, whereas those of Cd and Hg indicated mild and moderate pollution. The environmental fates of HMs were discussed based on Pearson correlation analysis, revealing that concentrations of HMs were greatly affected by parameters, such as pH, salinity, dissolved oxygen (DO), and total organic carbon (TOC). Principal component and factor analyses indicated that Hg, Cr, As, and dissolved inorganic nitrogen (DIN) in water originated from similar sources, including domestic sewage and wastewater from fishing ports, runoffs, and outlets. For sediments, it was proposed that Cu, Zn, As, Pb, and TOC exhibited similar sources, including cage culture and waste discharge from outlets. Meanwhile, Hg and Cd originated from other point sources, such as a harbor. The study suggests that sustainable management and economic development be integrated to control pollutant emissions in Daya Bay. Full article

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16 pages, 5209 KiB

Open AccessArticle

Environmental Risk Mitigation by Biodiesel Blending from Eichhornia crassipes: Performance and Emission Assessment

by Hasanain A. Abdul Wahhab and Hussain H. Al-Kayiem

Sustainability 2021, 13(15), 8274; https://doi.org/10.3390/su13158274 - 24 Jul 2021

Cited by 11 | Viewed by 2334

Abstract

The aggressive growth of Eichhornia crassipes (Water Hyacinth) plants causes severe damage to the irrigation, environment, and waterway systems in Iraq. This study aims to produce, characterize, and test biofuel extracted from the Eichhornia crassipes plant in Iraq. The extracted biodiesel was mixed [...] Read more.

The aggressive growth of Eichhornia crassipes (Water Hyacinth) plants causes severe damage to the irrigation, environment, and waterway systems in Iraq. This study aims to produce, characterize, and test biofuel extracted from the Eichhornia crassipes plant in Iraq. The extracted biodiesel was mixed at 10%, 20%, and 40% with neat diesel to produce three biodiesel samples. The methodology consists of the physiochemical properties of the samples that were characterized. The performance of the IC engine fueled by neat and biodiesel samples was measured under various operational conditions. The exhaust gases were analyzed to estimate the compounds to assess the environmental impact. The results showed that the density and viscosity of mixtures increase and the calorific value decrease with biodiesel. The engine test showed that the diesel + 10BE, diesel + 20BE, and diesel + 40BE enhanced brake thermal efficiency using 2.6%, 4.2%, and 6.3%, respectively, compared to neat diesel. Exhaust tests show a slight reduction, of 0.85–3.69% and 2.48–6.93%, in CO and HC emission, respectively. NOx is higher by 1.87–7.83% compared with neat diesel. The results revealed that biodiesel blended from Eichhornia crassipes is a viable solution to mitigate the drastic impact on the environment and economy in Iraq. The blended biodiesel has good potential to be mixed with the locally produced diesel from oil refineries. Full article

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13 pages, 1217 KiB

Open AccessArticle

Alterations of Amino Acid Concentrations and Photosynthetic Indices in Light Irradiated Arabidopsis thaliana during Phytoextraction

by Yanmei Chen, Longfei Liang, Dan Chen, Tian Gan, Min Cao and Jie Luo

Sustainability 2021, 13(14), 7720; https://doi.org/10.3390/su13147720 - 10 Jul 2021

Cited by 4 | Viewed by 1665

Abstract

Hyperaccumulation of heavy metals is substantial in some hyperaccumulators; however, few studies have been conducted to reveal the effect of light irradiation on the variations of representative amino acids and photosynthetic indices, which can represent the antioxidant capacity of plants during phytoremediation. The [...] Read more.

Hyperaccumulation of heavy metals is substantial in some hyperaccumulators; however, few studies have been conducted to reveal the effect of light irradiation on the variations of representative amino acids and photosynthetic indices, which can represent the antioxidant capacity of plants during phytoremediation. The physiochemical responses of Arabidopsis thaliana to Cd stress were compared during six light irradiation treatments. The results of the experiment showed that the stress adaptation of A. thaliana was enhanced in all light irradiation treatments, except for monochromatic blue-light irradiation. The concentrations of glutamic acid and glutamine decreased significantly in pure blue light compared with the other treatments. The decrease in the concentrations of these two amino acids might be induced by an intensive biosynthesis of defensive factors, as manifested in the declined photosynthetic indices. Concentrations of aspartic acid and asparagine involved in the ammonification, absorption, and transportation of nitrogen in vascular plants increased in the red and blue combined irradiation treatments compared with the control, corresponding to the improved photosynthetic capacity of the species. The concentration of proline, which can represent environmental stresses including metal toxicity and excessive light energy, generally increased with an increasing ratio of blue light. This study proposes the key roles of amino acids and photosynthetic indices in light-motivated Cd pollution responses in A. thaliana. Full article

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18 pages, 4569 KiB

Open AccessArticle

Mathematical Model to Simulate the Transfer of Heavy Metals from Soil to Plant

by Petru Cârdei, Cătălina Tudora, Valentin Vlăduț, Mirabela Augustina Pruteanu, Iuliana Găgeanu, Dan Cujbescu, Despina-Maria Bordean, Nicoleta Ungureanu, George Ipate and Oana Diana Cristea

Sustainability 2021, 13(11), 6157; https://doi.org/10.3390/su13116157 - 30 May 2021

Cited by 7 | Viewed by 3695

Abstract

Heavy metals are naturally occurring elements, but their various applications have led to their wide circulation in the environment, raising concerns over their latent effects on the environment and human health. Their toxicity depends on numerous factors, including chemical species, concentration of heavy [...] Read more.

Heavy metals are naturally occurring elements, but their various applications have led to their wide circulation in the environment, raising concerns over their latent effects on the environment and human health. Their toxicity depends on numerous factors, including chemical species, concentration of heavy metal ions, environmental factors, etc. Experimental studies on the single or cumulative effects of heavy metals on plants are complex, time consuming and difficult to conduct. An alternative is mathematical modeling, which can include different factors into an integrated system and can predict plant and environmental behavior under multiple stressors. This paper presents a mathematical model that simulates the dependence of temperature, concentration of Zn in the soil and the subsequent bioaccumulation in lettuce (Lactuca sativa L.); respectively, the reaction of lettuce to Zn contamination. The main results consist of three mathematical models, based on systems of ordinary differential equations and checking their predictions with available experimental data. The models are applied to predict an optimal harvest time of lettuce with low concentration of Zn, in identifying the availability of the analyzed species to phytoremediation operations and the possibility of maneuvering certain control factors to reduce or increase the intensity of the bioaccumulation process. Full article

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11 pages, 3711 KiB

Open AccessArticle

Heavy Metal Concentrations in Orchard Soils with Different Cultivation Durations and Their Potential Ecological Risks in Shaanxi Province, Northwest China

by Hongmei Dong, Jingbo Zhao and Mengping Xie

Sustainability 2021, 13(9), 4741; https://doi.org/10.3390/su13094741 - 23 Apr 2021

Cited by 6 | Viewed by 1971

Abstract

The heavy metal pollution of soils, resulting from long-term fertilizing activity, is becoming serious in many countries, endangering ecological safety and human health. This study employed inductively coupled plasma-mass spectrometry (ICP-MS) to investigate concentrations of eight heavy metal elements (Cd, Hg, As, Pb, [...] Read more.

The heavy metal pollution of soils, resulting from long-term fertilizing activity, is becoming serious in many countries, endangering ecological safety and human health. This study employed inductively coupled plasma-mass spectrometry (ICP-MS) to investigate concentrations of eight heavy metal elements (Cd, Hg, As, Pb, Cr, Cu, Ni, and Zn) in five apple orchard soil profiles after different cultivation durations, one modern intercropping farmland soil profile, and one natural soil profile from Baishui County, in Shaanxi Province, Northwest China. The potential risk associated with the presence of heavy metals in the soils was assessed by the single-factor pollution index (P_i), Nemerow comprehensive index (NCI), and potential ecological risk index (RI). Results showed that the average concentrations of Cr, Ni, As, Pb, and Hg in the farmland soil were higher than those in the apple orchard soils. The average concentrations of Ni, Cu, As, and Hg in the apple orchard soils reached the highest after 25 years of cultivation. The results imply that concentrations of heavy metals will increase with increasing cultivation time. The farmland soil had the highest NCIs, while the NCIs of the apple orchard soils also increased with cultivation time. Compared with the quality standards of pollution-free orchards and green food production areas, all P_is and NCIs were less than 1 and 0.7, respectively, indicating that the soils were in healthy condition. The RI results also suggest that the soils have a low ecological risk (RI < 150). Although the potential ecological risk is currently low, predicting and reducing heavy metal input should be considered. Full article

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16 pages, 14783 KiB

Open AccessArticle

Soil Gas Measurements of Radon, CO₂ and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

by Marko Cvetković, Josipa Kapuralić, Marija Pejić, Iva Kolenković Močilac, David Rukavina, Duje Smirčić, Ana Kamenski, Bojan Matoš and Marko Špelić

Sustainability 2021, 13(7), 3840; https://doi.org/10.3390/su13073840 - 31 Mar 2021

Cited by 7 | Viewed by 2395

Abstract

Soil gas measurements of radon (²²²Rn), CO₂, and hydrocarbon concentrations, as well as gamma-ray spectrometry, were conducted at two separate locations to estimate the measurement results for known locations of hydrocarbon accumulations in the subsurface and oil seepage on [...] Read more.

Soil gas measurements of radon (²²²Rn), CO₂, and hydrocarbon concentrations, as well as gamma-ray spectrometry, were conducted at two separate locations to estimate the measurement results for known locations of hydrocarbon accumulations in the subsurface and oil seepage on the surface. The aim of the study was to confirm the applicability of the method for identifying migration pathways (e.g., faults) and to detect possible seepages of hydrocarbons to the surface as well as to investigate possible health issue potential about the soil gas analysis results. Site A investigations were performed with a large number of sampling points to provide sufficient spatial coverage to capture the influence of subsurface lithologic variability as well as the influence of the migration pathway on the measured parameters. For the investigation of site B, sampling points were positioned to reflect the situation between the area above producing hydrocarbon fields and areas with no confirmed accumulation. The results presented show that it is possible to distinguish the near-surface lithology (gamma-ray spectrometry), characterize the migration pathway, and indicate the area of oil seepage at the surface. Areas above the known hydrocarbon accumulations generally have elevated radon concentrations and detectable heavier hydrocarbons with sporadic methane in soil gas, which contrasts with the lower radon levels and lack of detectable heavier hydrocarbons in soil gas in the area with no confirmed hydrocarbon accumulation in the subsurface. Full article

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12 pages, 3778 KiB

Open AccessArticle

Vulnerability Comparison between Karst and Non-Karst Nature Reserves—With a Special Reference to Guizhou Province, China

by Yue Chen, Kangning Xiong, Xiaodong Ren and Cai Cheng

Sustainability 2021, 13(5), 2442; https://doi.org/10.3390/su13052442 - 24 Feb 2021

Cited by 6 | Viewed by 1834

Abstract

Studying vulnerability has become one of the hot issues of ecological research under global change and sustainable development scenarios. However, there are few studies focusing on the vulnerability of karst areas, especially on the comparison between karst and non-karst areas. This study integrated [...] Read more.

Studying vulnerability has become one of the hot issues of ecological research under global change and sustainable development scenarios. However, there are few studies focusing on the vulnerability of karst areas, especially on the comparison between karst and non-karst areas. This study integrated climate factors, soil and vegetation factors, and social factors within a vulnerability evaluation framework that combined the analytical hierarchy process (AHP) technique to evaluate and compare the ecological environments of 10 karst nature reserves and five non-karst nature reserves in Guizhou Province, China. The evaluation results were divided into five categories: potential, light, moderate, severe, and extremely severe vulnerability. The results indicated that the general vulnerability of national nature reserves in Guizhou Province showed moderate vulnerability. The vulnerability index of karst nature reserves was significantly higher than that of non-karst nature reserves. The general vulnerability of karst nature reserves showed moderate vulnerability, while that of non-karst nature reserves showed light vulnerability. Average soil thickness, arable area, and the length of roads may be the factors contributing to the significant difference in the vulnerability between karst and non-karst nature reserves. Overall, this study is conducive to a comprehensive understanding of the ecological environment status of national nature reserves in Guizhou Province, and is of great significance to maintaining ecological security and sustainable development in karst areas. Full article

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18 pages, 3521 KiB

Open AccessArticle

Identification of Soil Heavy Metal Sources in a Large-Scale Area Affected by Industry

by Yuan Xu, Huading Shi, Yang Fei, Chao Wang, Li Mo and Mi Shu

Sustainability 2021, 13(2), 511; https://doi.org/10.3390/su13020511 - 07 Jan 2021

Cited by 29 | Viewed by 3206

Abstract

Heavy metals (HMs) in soil are some of the most serious pollutants due to their toxicity and nonbiodegradability. Especially across large-scale areas affected by industry, the complexity of pollution sources has attracted extensive attention. In this study, an approach based on zoning to [...] Read more.

Heavy metals (HMs) in soil are some of the most serious pollutants due to their toxicity and nonbiodegradability. Especially across large-scale areas affected by industry, the complexity of pollution sources has attracted extensive attention. In this study, an approach based on zoning to analyze the sources of heavy metals in soil was proposed. Qualitative identification of pollution sources and quantification of their contributions to heavy metals in soil are key approaches in the prevention and control of heavy metal pollution. The concentrations of five HMs (Cd, Hg, As, Pb and Cr) in the surface soil of the Chenzhou industrial impact area were the research objects. Multiple methods were used for source identification, including positive matrix factorization (PMF) analysis combined with multiple other analyses, including random forest modeling, the geo-accumulation index method and hot spot analysis. The results showed that the average concentrations of the five heavy metals were 9.46, 2.36, 2.22, 3.27 and 1.05 times the background values in Hunan soil, respectively. Cd was associated with moderately to strongly polluted conditions, Hg, As and Pb were associated with unpolluted to moderately polluted conditions and Cr was associated with practically unpolluted conditions. The mining industry was the most significant anthropogenic factor affecting the content of Cd, Pb and As in the whole area, with contribution rates of 87.7%, 88.5% and 62.5%, respectively, and the main influence area was within 5 km from the mining site. In addition, we conducted hot spot analysis on key polluting enterprises and identified hot spots, cold spots, and areas insignificantly affected by enterprises, used this information as the basis for zoning treatment and discussed the sources of heavy metals in the three subregions. The results showed that Cd originated mainly from agricultural activities, with a contribution rate of 63.6%, in zone 3. As originated mainly from sewage irrigation, with a contribution rate of 65.0%, in zone 2, and the main influence area was within 800 m from the river. This element originated mainly from soil parent materials, with a contribution rate of 69.7%, in zone 3. Pb mainly originated from traffic emissions, with a contribution rate of 72.8%, in zone 3, and the main influence area was within 500 m from the traffic trunk line. Hg was mainly derived from soil parent materials with a contribution rate of 92.1% in zone 1, from agricultural activities with a contribution rate of 77.5% in zone 2, and from a mixture of natural and agricultural sources with a contribution rate of 74.2% in zone 3. Cr was mainly derived from the soil parent materials in the whole area, with a contribution rate of 90.7%. The study showed that in large-scale industrial influence areas, the results of heavy metal source analysis can become more accurate and detailed by incorporating regional treatment, and more reasonable suggestions can be provided for regional enterprise management and soil pollution control decision making. Full article

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2020

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28 pages, 4203 KiB

Open AccessArticle

Software Application for Organizational Sustainability Performance Assessment

by Valentin Grecu, Radu-Ilie-Gabriel Ciobotea and Adrian Florea

Sustainability 2020, 12(11), 4435; https://doi.org/10.3390/su12114435 - 29 May 2020

Cited by 15 | Viewed by 3928

Abstract

Sustainability performance assessment is a challenge for many companies due to the heterogeneity of indicators and the lack of a standardized reporting framework. This paper describes a software solution that simplifies the sustainability reporting process and is useful for decisions concerning sustainable management. [...] Read more.

Sustainability performance assessment is a challenge for many companies due to the heterogeneity of indicators and the lack of a standardized reporting framework. This paper describes a software solution that simplifies the sustainability reporting process and is useful for decisions concerning sustainable management. We analyzed various indicators from public sustainability reports of five companies and obtained some relevant results using the tool that we developed based on mathematic algorithms and an aggregation model of different indicators. The software application calculates a Global Sustainability Index based on the proposed model of the sustainable organization described in this paper. An optimal solution is very rare in the transition towards the sustainable organization and compromises are required most frequently between environmental, economic and social aspects on the one hand and the expectations of the stakeholders on the other hand. The proposed tool helps users to cope with these challenges and takes into consideration that information is not always available and precise. Another feature offered by the tool is that besides simplifying sustainability performance assessment, it highlights low performance indicators and offers suggestions for improvement based on a genetic algorithm. Full article

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17 pages, 5394 KiB

Open AccessArticle

Assessment of Ecological Carrying Capacity and Ecological Security in China’s Typical Eco-Engineering Areas

by Yaxian Zhang, Jiangwen Fan and Suizi Wang

Sustainability 2020, 12(9), 3923; https://doi.org/10.3390/su12093923 - 11 May 2020

Cited by 22 | Viewed by 3847

Abstract

The implementation of ecological restoration programs is intensively changing the original ecological carrying capacity and the status of ecological security. To evaluate the spatiotemporal variation of ecological carrying capacity and ecological security in China’s eco-engineering areas, an indicator system of ecological carrying capacity [...] Read more.

The implementation of ecological restoration programs is intensively changing the original ecological carrying capacity and the status of ecological security. To evaluate the spatiotemporal variation of ecological carrying capacity and ecological security in China’s eco-engineering areas, an indicator system of ecological carrying capacity and ecological security should be developed. This study developed an evaluation indicator system that contains 29 indicators. The indicators were generated by long-time series and multi-source data. The indicator system presents the relationship between ecological carrying capacity and ecological security and reflects the dynamic change of them in eco-engineering areas. We selected the Three-River Headwaters Region (TRHR) and implemented the Ecological Conservation and Construction Program (ECCP) as a case study. The results showed the variation of ecological carrying capacity (ECC) and ecological security (ES) in the TRHR before (2000–2004), during early term (2005–2009), and during medium term (2010–2015) implementation of ECCP, and limiting factors of ecological carrying capacity and ecological security in TRHR was analyzed. The results showed that the ECC index and the ES index were significantly increase, indicating that the ECC improved and that the ES state got better in the TRHR after implementing ECCP. The water conservation was the major factors limiting the increase of the ECC. The leading factors limiting the improvement of the ES were educational expenditure before 2010 and turned into proportion of tertiary industry and investments for ecological restoration after 2010. The implementation of the ECCP has improved the ES state but has also resulted in new problems. It provides a scientific reference for future research on the indicator system of ecological carrying capacity and ecological security in eco-engineering areas and also has vital practical significance to guide the sustainable development of ecological restoration programs. Full article

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12 pages, 1240 KiB

Open AccessArticle

Adsorption of Fluorides in Drinking Water by Palm Residues

by Maria Cristina Collivignarelli, Alessandro Abbà, Marco Carnevale Miino, Vincenzo Torretta, Elena Cristina Rada, Francesca Maria Caccamo and Sabrina Sorlini

Sustainability 2020, 12(9), 3786; https://doi.org/10.3390/su12093786 - 07 May 2020

Cited by 15 | Viewed by 3514

Abstract

Fluorides represent a significant problem in low- and middle-income countries (LMICs). In fact, this ion is essential for human health but, if taken in excess, it can cause dental and skeletal fluorosis. In LMICs, the pollution of groundwater from fluorides is of natural [...] Read more.

Fluorides represent a significant problem in low- and middle-income countries (LMICs). In fact, this ion is essential for human health but, if taken in excess, it can cause dental and skeletal fluorosis. In LMICs, the pollution of groundwater from fluorides is of natural origin. Therefore, if providing alternative sources for drinking water (DW) supply is not possible, the use of specific processes for the removal of fluorides becomes essential. The adsorption on alternative materials, such as agro-food residues, can be a valid treatment for the removal of fluorides in the LMIC considering: (i) their optimal removal yields, (ii) the high availability, and (iii) the low cost. In recent years, the interest on the use of palm residues (PRs) becomes significant. Optimal pH, temperature, adsorbent dosage, and possible combination with metals to increase adsorption performances were deeply investigated. The activated PRs also present two other advantages: (i) very high surface area, and (ii) very low reduction in uptake capacity when regenerated. However, all tests were conducted with synthetic waters in laboratory-scale reactors while application on real-scale are absent. This makes other studies on this type of alternative adsorbent material still necessary. Full article

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14 pages, 870 KiB

Open AccessArticle

Effects of Aquatic Macrophytes on Spatial Distribution and Feeding Habits of Exotic Fish Species Lepomis macrochirus and Micropterus salmoides in Shallow Reservoirs in South Korea

by Jong-Yun Choi and Seong-Ki Kim

Sustainability 2020, 12(4), 1447; https://doi.org/10.3390/su12041447 - 15 Feb 2020

Cited by 16 | Viewed by 2730

Abstract

Aquatic macrophytes determine the physical complexity of aquatic environments and may influence the distribution and feeding habits of fish species. We explored the influence of different microhabitats, including vegetated beds (VB), edges of vegetated beds (EVB), and open water zones (OW), on two [...] Read more.

Aquatic macrophytes determine the physical complexity of aquatic environments and may influence the distribution and feeding habits of fish species. We explored the influence of different microhabitats, including vegetated beds (VB), edges of vegetated beds (EVB), and open water zones (OW), on two exotic fish species (Lepomis macrochirus and Micropterus salmoides) in shallow reservoirs. Lepomis macrochirus was more abundant in VB than in other zones and M. salmoides was mainly distributed in EVB. In VB, L. macrochirus mainly consumed branchiopods and isopods, while M. salmoides in EVB relied on relatively larger food items, such as dipterans, odonatans, and young fish. The consumption of young fish by M. salmoides, including L. macrochirus, showed little difference between winter and summer. Based on these findings, we suggest that young L. macrochirus (~20 cm) utilize VB as a refuge to avoid predation by M. salmoides. Meanwhile, M. salmoides mainly occupied in areas surrounding VB, preying on animals at these edges. As such, the presence of aquatic macrophytes appears to plays a key role in the survival and population growth of L. macrochirus. Proper management of aquatic macrophytes can help reduce populations of exotic fish and support native fish species. Full article

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16 pages, 2911 KiB

Open AccessArticle

Spatiotemporal Evolution of Landscape Ecological Risk Based on Geomorphological Regionalization during 1980–2017: A Case Study of Shaanxi Province, China

by Di Liu, Hai Chen, Hang Zhang, Tianwei Geng and Qinqin Shi

Sustainability 2020, 12(3), 941; https://doi.org/10.3390/su12030941 - 28 Jan 2020

Cited by 22 | Viewed by 2424

Abstract

Land surface elements, such as land use, are in constant change and dynamically balanced, driving changes in global ecological processes and forming the regional differentiation of surface landscapes, which causes many ecological risks under multiple sources of stress. The landscape pattern index can [...] Read more.

Land surface elements, such as land use, are in constant change and dynamically balanced, driving changes in global ecological processes and forming the regional differentiation of surface landscapes, which causes many ecological risks under multiple sources of stress. The landscape pattern index can quickly identify the disturbance caused by the vulnerability of the ecosystem itself, thus providing an effective method to support the spatial heterogeneity of landscape ecological risk. A landscape ecological risk model based on the degree of interference and fragility was constructed and spatiotemporal differentiation of risk between 1980 and 2017 in Shaanxi Province was analyzed. The spatiotemporal migration of risk was demonstrated from the perspective of geomorphological regionalization and risk gravity. Several conclusions were drawn: The risk of Shaanxi Province first increased and then decreased, at the same time, the spatial differentiation of landscape ecological risk was very significant. The ecological risk presented a significant positive correlation but the degree of autocorrelation decreased. The risk of the Qinba Mountains was low and the risk of the Guanzhong Plain and Han River basin was high. The risk of Loess Plateau and sandstorm transition zone decreased greatly and their risk gravities shifted to the southwest. The gravity of the Guanzhong Plain and Qinling Mountains had a northward trend, while the gravity of the Han River basin and Daba Mountains shifted to the southeast. In the analysis of typical regions, there were different relationships between morphological indicators and risk indexes under different geomorphological features. The appropriate engineering measures and landscape management for different geomorphological regionalization were suggested for effective reduction of ecological risks. Full article

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2019

Jump to: 2024, 2023, 2021, 2020, 2018, 2017

17 pages, 4245 KiB

Open AccessArticle

The Potential of Gully Erosion on the Yamal Peninsula, West Siberia

by Aleksey Sidorchuk

Sustainability 2020, 12(1), 260; https://doi.org/10.3390/su12010260 - 28 Dec 2019

Cited by 15 | Viewed by 2782

Abstract

The Yamal Peninsula occupies the northern part of the West Siberian Plain in Russia. This territory has rapidly developed due to the exploitation of several gas fields. At the same time, the Yamal Peninsula is one of the most severely gullied landscapes in [...] Read more.

The Yamal Peninsula occupies the northern part of the West Siberian Plain in Russia. This territory has rapidly developed due to the exploitation of several gas fields. At the same time, the Yamal Peninsula is one of the most severely gullied landscapes in the Arctic. The potential risk of damage to the environment or structures and the cost of such damages are very high there. The erosion potential is the cumulative erosion by runoff above critical, calculated for each point at a catchment. Calculations take into account the geomorphic, lithological, and vegetation cover thresholds, realized in the form of critical runoff depth of erosion initiation. It also takes into account action of all flows between the critical and maximum runoff. The calculations for several gullied catchments on the Yamal Peninsula show the uneven distribution of erosion potential level with the maximum of gully erosion on the steep banks of the river valleys and on gully heads with bare soil. The area with potential erosion in these catchments varies within the range of 17–33%. The erosion on the Yamal Peninsula is mainly of natural origin. It occurs on steep slopes and at the heads of gullies. These landforms are not used for exploitation camps and settlements. Nevertheless, the linear structures, such as railways, roads and pipelines, can cross these unstable landforms with the risk of damage. Erosion potential increases at the spots with bare soil, which appear due to both construction work and natural processes, such as slumping. Full article

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21 pages, 9420 KiB

Open AccessArticle

Environmental Risk Assessment of Accidental Pollution Incidents in Drinking Water Source Areas: A Case Study of the Hongfeng Lake Watershed, China

by Pei Tian, Huaqing Wu, Tiantian Yang, Wenjie Zhang, Faliang Jiang, Zhaoyi Zhang and Tieniu Wu

Sustainability 2019, 11(19), 5403; https://doi.org/10.3390/su11195403 - 29 Sep 2019

Cited by 8 | Viewed by 3584

Abstract

Accidental pollution incidents have caused a major threat to water safety of drinking water sources. However, few studies have focused on quantitative risk assessment of pollution incidents in a watershed which contains drinking water sources. A coupling model consisting of the Seveso III [...] Read more.

Accidental pollution incidents have caused a major threat to water safety of drinking water sources. However, few studies have focused on quantitative risk assessment of pollution incidents in a watershed which contains drinking water sources. A coupling model consisting of the Seveso III Directive, SWAT, and MIKE21 models was constructed for risk assessment of sudden pollution incidents at the watershed scale. The potential hazard of risk sources (e.g., industrial enterprises), the vulnerability of risk receptors (e.g., drinking water intakes), and the environmental risk of different sub-regions of the watershed were evaluated by this model. In addition, a case study was applied in Hongfeng Lake watershed (HLW), where the Hongfeng Lake drinking water source is located. The results showed that about 68% of the industrial enterprises in the HLW were potentially hazardous according to the Seveso III Directive, including 5 high hazard enterprises, 13 medium hazard enterprises, and 37 low hazard enterprises, most of which were concentrated in the coal mining, chemical production, and building material industries. The HLW was divided into the Yangchang River watershed (YRW), the Maiweng River watershed (MRW1), the Maxian River watershed (MRW2), the Houliu River watershed (HRW), and the lake area by the hydrological characteristics, among which, the vulnerability index of YRW was the largest. Besides, it was essential to consider the vulnerability assessment of drinking water intakes when conducting an environmental risk assessment in the HLW. Regional environmental risk grade of YRW, MRW1, MRW2, HRW, and the lake area was high, medium, low, low, and none, respectively. The environmental risk assessment results showed good consistency with the pollution characteristics and spatial distribution of industrial enterprises in the HLW. Furthermore, the theory of a three-level prevention system for “risk sources–water body connection–water intakes” was proposed for environmental risk management in the HLW. Overall, the case study in the HLW indicated that the coupling model proposed in this study had a good compatibility for environmental risk assessment of sudden water pollution incidents in a watershed. Full article

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18 pages, 1516 KiB

Open AccessArticle

Agent-Based Modeling (ABM): Support for Emphasizing the Air Transport Infrastructure Dependence of Space Systems

by Olga Bucovetchi, Alexandru Georgescu, Dorel Badea and Radu D. Stanciu

Sustainability 2019, 11(19), 5331; https://doi.org/10.3390/su11195331 - 27 Sep 2019

Cited by 8 | Viewed by 2959

Abstract

Critical infrastructure is foundational for the prosperity and quality of life in any society. By definition, its destruction or disruption would cause severe damage and possibly loss of life. Within this understanding, space systems are a new category of critical infrastructure, emerging as [...] Read more.

Critical infrastructure is foundational for the prosperity and quality of life in any society. By definition, its destruction or disruption would cause severe damage and possibly loss of life. Within this understanding, space systems are a new category of critical infrastructure, emerging as an enabler of new applications which are critical within the wider system-of-systems. This paper presents the results of a modeling exercise validating the proof of concept regarding the idea of the global, air-transport-critical infrastructure’s dependence on space systems. By using an open-source application, the authors constructed a complex system made up of 18 airports for which six scenarios were modeled that represent either the exposure to specific space phenomena or the effects of a partial or total critical space infrastructure disruption. Despite the limitations and assumptions made in the building of this model, its results suggest that a significant impact would result from disruptive events, with the potential for cascading disruptions within the system, beyond the system under analysis, and into the wider system-of-systems. Tools such as this model are useful to policy- and decision-makers, not only to protect existing, critical infrastructures, but also to adequately source future risks, vulnerabilities, and threats, and design and build new infrastructures. Full article

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16 pages, 4718 KiB

Open AccessArticle

Comparative Study of Environmental Assessment Methods in the Evaluation of Resources and Environmental Carrying Capacity—A Case Study in Xinjiang, China

by Zhiping Zhang, Fuqiang Xia, Degang Yang, Yufang Zhang, Tianyi Cai and Rongwei Wu

Sustainability 2019, 11(17), 4666; https://doi.org/10.3390/su11174666 - 27 Aug 2019

Cited by 10 | Viewed by 3379

Abstract

Scientifically assessing the environmental carrying capacity (ECC) based on an evaluation of environmental quality standards (EQSs) holds great significance for establishing a long-term monitoring and early warning mechanism for resources and environmental carrying capacity (RECC) and for coordinating the sustainable development of ecological [...] Read more.

Scientifically assessing the environmental carrying capacity (ECC) based on an evaluation of environmental quality standards (EQSs) holds great significance for establishing a long-term monitoring and early warning mechanism for resources and environmental carrying capacity (RECC) and for coordinating the sustainable development of ecological environments and regional economies. However, it remains unclear whether the evaluation of EQSs based on the short board effect is suitable for environmental assessments under different natural environments. In this research, Xinjiang is used as a case study. Based on the evaluation of EQSs, the atmospheric environmental carrying capacity (AECC), water environmental carrying capacity (WECC) and comprehensive environmental carrying capacity (CECC) are assessed using the short board effect and the weighted average. Additionally, the suitability of ECC evaluation in RECC evaluation is discussed. The results show the following: (1) In the atmosphere, the overload of inhalable particles (PM₁₀) and fine particulate matter (PM_2.5) is more serious, while in water, the overload of total nitrogen (TN) is more serious. (2) The percentages of the AECC, WECC and CECC in overloaded counties and cities based on the short board effect are 84%, 45%, and 51%, respectively, while the percentages based on the weighted average are 32%, 6% and 7%, respectively. (3) The extreme effects of a single pollutant can be eliminated by the weighted average, which is more suitable for environmental assessments in Xinjiang. (4) In evaluating RECC monitoring and early warning systems, weighted average evaluation is used to assess the elements, and short board effect evaluation is used in the comprehensive integration to prevent the influence of the amplification of a single index. Thus, the interference of non-key factors in the regional system on the final evaluation results is reduced. Full article

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18 pages, 6069 KiB

Open AccessArticle

Risk Assessment and Pressure Response Analysis of the Water Footprint of Agriculture and Livestock: A Case Study of the Beijing–Tianjin–Hebei Region in China

by Chen Cao, Xiaohan Lu and Xuyong Li

Sustainability 2019, 11(13), 3693; https://doi.org/10.3390/su11133693 - 05 Jul 2019

Cited by 3 | Viewed by 2496

Abstract

Excessive water consumption, associated with regional agriculture and livestock development and rapid urbanization, has caused significant stress to the ecological health and sustainable use of water resources. We used the water footprint theory to quantify the spatiotemporal characteristics and variation in the water [...] Read more.

Excessive water consumption, associated with regional agriculture and livestock development and rapid urbanization, has caused significant stress to the ecological health and sustainable use of water resources. We used the water footprint theory to quantify the spatiotemporal characteristics and variation in the water footprint of agriculture and livestock (WF-AL) in the Beijing–Tianjin–Hebei region of China (2000–2016). We predicted the spatial distribution and sustainability of regional water resources at different levels of annual precipitation. Results showed that the average county WF-AL rose from 8.03 × 10⁸ m³ in 2000 to 10.89 × 10⁸ m³ in 2016. There was spatial heterogeneity compared to the average city WF-AL. The WF-AL varied between the mountains and the plains. The scale of the WF-AL was one of the main reasons for differences in the consumption and distribution of water resources. The development of regional water resources deteriorated from a stable state to an unstable state from 2000 to 2016. Only 5.8% of the areas maintained a stable state of water resources. Even in the predicted wet years, no improvements were found in the instability of water resources in four areas centered on the counties of Xinji, Daming, Luannan, and Weichang. To achieve a medium and long-term balance between WF-AL development and water resource recovery, the WF-AL should be limited and combined with reservoir and cross-regional water transfer. Full article

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23 pages, 3541 KiB

Open AccessArticle

Quantitative Assessment of Soil Erosion Based on CSLE and the 2010 National Soil Erosion Survey at Regional Scale in Yunnan Province of China

by Guokun Chen, Zengxiang Zhang, Qiankun Guo, Xiao Wang and Qingke Wen

Sustainability 2019, 11(12), 3252; https://doi.org/10.3390/su11123252 - 12 Jun 2019

Cited by 22 | Viewed by 3552

Abstract

Regional soil loss assessment is the critical method of incorporating soil erosion into decision-making associated with land resources management and soil conservation planning. However, data availability has limited its application for mountainous areas. To obtain a clear understanding of soil erosion in Yunnan, [...] Read more.

Regional soil loss assessment is the critical method of incorporating soil erosion into decision-making associated with land resources management and soil conservation planning. However, data availability has limited its application for mountainous areas. To obtain a clear understanding of soil erosion in Yunnan, a pixel-based estimation was employed to quantify soil erosion rate and the benefits of soil conservation measures based on Chinese Soil Loss Equation (CSLE) and data collected in the national soil erosion survey. Results showed that 38.77% of the land was being eroded at an erosion rate higher than the soil loss tolerance, the average soil erosion rate was found to be 12.46 t∙ha⁻¹∙yr⁻¹, resulting in a total soil loss of 0.47 Gt annually. Higher erosion rates mostly occurred in the downstream areas of the major rivers as compared to upstream areas, especially for the southwest agricultural regions. Rain-fed cropland suffered the most severe soil erosion, with a mean erosion rate of 47.69 t∙ha⁻¹∙yr⁻¹ and an erosion ratio of 64.24%. Lands with a permanent cover (forest, shrub, and grassland) were mostly characterized by erosion rates an order of magnitude lower than those from rain-fed cropland, except for erosion from sparse woods, which was noticeable and should not be underestimated. Soil loss from arable land, woodland and grassland accounted for 52.24%, 35.65% and 11.71% of the total soil loss, respectively. We also found significant regional differences in erosion rates and a close relationship between erosion and soil conservation measures adopted. The CSLE estimates did not compare well with qualitative estimates from the National Soil Erosion Database of China (NSED-C) and only 47.77% of the territory fell within the same erosion intensity for the two approaches. However, the CSLE estimates were consistent with the results from a national survey and local assessments under experimental plots. By advocating of soil conservation measures and converting slope cropland into grass/forest and terraced field, policy interventions during 2006–2010 have reduced soil erosion on rain-fed cropland by 20% in soil erosion rate and 32% in total soil loss compared to the local assessments. The quantitative CSLE method provides a reliable estimation, due to the consideration of erosion control measures and is potentially transferable to other mountainous areas as a robust approach for rapid assessment of sheet and rill erosion. Full article

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28 pages, 6188 KiB

Open AccessArticle

Risk-Based Assessment Engineering of a Parallel Robot Used in Post-Stroke Upper Limb Rehabilitation

by Paul Tucan, Calin Vaida, Nicolae Plitea, Adrian Pisla, Giuseppe Carbone and Doina Pisla

Sustainability 2019, 11(10), 2893; https://doi.org/10.3390/su11102893 - 21 May 2019

Cited by 28 | Viewed by 4492

Abstract

Recently, robotic-assisted stroke rehabilitation became an important research topic due to its capability to provide complex solutions to perform the customized rehabilitation motion with enhanced resources than the traditional rehabilitation. Involving robotic devices in the rehabilitation process would increase the number of possible [...] Read more.

Recently, robotic-assisted stroke rehabilitation became an important research topic due to its capability to provide complex solutions to perform the customized rehabilitation motion with enhanced resources than the traditional rehabilitation. Involving robotic devices in the rehabilitation process would increase the number of possible rehabilitated patients, but placing the patient inside the workspace of the robot causes a series of risks that needs to be identified, analyzed and avoided. The goal of this work is to provide a reliable solution for an upper limb rehabilitation robotic structure designed as a result of a risk assessment process. The proposed approach implies a hazard identification process in terms of severity and probability, a failure mode and effects analysis to identify the possible malfunctions in the system and an AHP (Analytic Hierarchy Process) to prioritize the technical characteristics of the robotic structure. The results of the risk assessment process and of the AHP provide the base of the final design of the robotic structure, while another solution, in terms of minimizing the risk for the patient injury, is obtained using an external measuring system. Full article

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15 pages, 2018 KiB

Open AccessArticle

On the Reduction of the Biological Danger of Environmental Contamination by Using a “Complete and Reusable Thoracic Drainage System”

by Alin Dragos Demetrian, Mihnea Cosmin Costoiu, Augustin Semenescu, Gigel Paraschiv, Oana Roxana Chivu, Claudiu Babis, Georgiana Moiceanu, Olivia Negoita and Ileana Mates

Sustainability 2019, 11(10), 2873; https://doi.org/10.3390/su11102873 - 20 May 2019

Viewed by 2700

Abstract

A clean environment is essential for human health and well-being. A significant share of total waste is represented by hospital waste that is produced in increasing quantities by sanitary units, with the appearance of the disposable tools. Taking into account the unfavourable environmental [...] Read more.

A clean environment is essential for human health and well-being. A significant share of total waste is represented by hospital waste that is produced in increasing quantities by sanitary units, with the appearance of the disposable tools. Taking into account the unfavourable environmental impact, the biological danger that this waste represents, and the restrictive legislation imposed by the European Union, urgent measures are needed to reduce their quantities. In this regard, the paper refers to the design of a completely reusable thoracic drainage system and to the positive implications that this system has on the amount of hospital waste. The research starts with the presentation of the medical system from Romania, continues with the classification of the hospital waste, then highlights the dangers and the risks caused by this and analyzes the impact on the sensitive groups. Furthermore, the paper presents the disposable bicameral and tricameral thoracic drainage device systems used in hospitals and then the advantages of using a completely reusable thoracic drainage system. The paper introduces also a research method based on the “opinion questioning”. The method uses a questionnaire with 23 items, addressed to physicians, because, despite restrictive legislation related to hospital waste management, this is not always respected. Each participant of the study works in a different hospital so that the questioned sample is representative. Full article

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21 pages, 3440 KiB

Open AccessArticle

Research on the Behavior of Factors That Influence the International Virtual Project Team Performance, Using Data Modeling Techniques

by Iulia Dumitraşcu-Băldău and Oana Dumitraşcu

Sustainability 2019, 11(3), 607; https://doi.org/10.3390/su11030607 - 24 Jan 2019

Cited by 6 | Viewed by 4496

Abstract

International projects have helped organizations around the world to better adapt to the new environmental conditions in which they operate, driven by the phenomenon of globalization. Electronic communication and information tools have enabled the creation of international virtual project teams (IVPTs), allowing team [...] Read more.

International projects have helped organizations around the world to better adapt to the new environmental conditions in which they operate, driven by the phenomenon of globalization. Electronic communication and information tools have enabled the creation of international virtual project teams (IVPTs), allowing team members to collaborate regardless of their geographic location or cultural, historical, socio-political, and educational differences. However, such an environment characterized by diversity will be productive only if the project team managers acknowledge and understand the behavior of influence factors comprised by the virtual environment, developing, accordingly, strategies that support team performance. In order to analyze the factors that influence IVPT performance, we used a C5.0 algorithm on the dataset through IBM SPSS Modeler software. Data collection was performed through an online survey, conducted within 107 IVPT members and managers, in order to answer the third question of the research. The predictive model created by the data mining algorithm revealed that the most important fields underlying the decision tree building were the cognitive skills training programs, team culture, and selection of IVPT members based on the characterisics of their national cultures. These results demonstrate the hypothesis that culture represents one of the most important factors influencing team performance. Full article

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23 pages, 2885 KiB

Open AccessArticle

Reducing the Risks during the Purchase of Five-Axis CNC Machining Centers Using AHP Method and Fuzzy Systems

by Lucian-Ionel Cioca, Radu-Eugen Breaz and Sever-Gabriel Racz

Sustainability 2019, 11(2), 315; https://doi.org/10.3390/su11020315 - 09 Jan 2019

Cited by 6 | Viewed by 3508

Abstract

Nowadays, companies are in the process of renewing their manufacturing lines by equipping them with modern five-axis CNC (computer numerical control) machining centers. The decision to select between different five-axis CNC machining centers, with similar technological capabilities is a difficult process, so the [...] Read more.

Nowadays, companies are in the process of renewing their manufacturing lines by equipping them with modern five-axis CNC (computer numerical control) machining centers. The decision to select between different five-axis CNC machining centers, with similar technological capabilities is a difficult process, so the main goal of this work was to develop a method for assisting it. The proposed approach relies on seven technical criteria, four quantitative ones (traverse speed, thrust, spindle power, and spindle speed) which can be expressed by crisp numerical values, while the other three (flexibility, operation easiness, and setup time) are qualitative ones. The analytic hierarchy process (AHP) was used for ordering four variants of five-axis CNC milling machining centers. The qualitative criteria were processed using fuzzy systems to be expressed by crisp numerical values, suitable for AHP. Finally, the four variants of five-axis CNC milling machining centers were hierarchized and the best one was chosen. A sensitivity analysis was also unfolded to certify the robustness of the AHP. Full article

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2018

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18 pages, 3946 KiB

Open AccessArticle

The Environmental Impact of Ecological Rehabilitation Techniques Applied to Statically and Variably Stressed Welded Structures

by Oana Roxana Chivu, Claudiu Babis, Augustin Semenescu, Olivia Doina Negoita, Gabriel Iacobescu and Andrei Dimitrescu

Sustainability 2018, 10(12), 4782; https://doi.org/10.3390/su10124782 - 14 Dec 2018

Viewed by 2717

Abstract

There are many welded structures in the world such as bridges and viaducts that are subject to fatigue. Some of these structures, generally made of non-alloy or low-alloy steels, have been put into operation many years ago and have accumulated a large number [...] Read more.

There are many welded structures in the world such as bridges and viaducts that are subject to fatigue. Some of these structures, generally made of non-alloy or low-alloy steels, have been put into operation many years ago and have accumulated a large number of variable load cycles over time. For this reason, the occurrence of the fatigue phenomenon is inevitable and consists in the occurrence of failures at stresses applied to the structure, below the yield limit of the material. These stresses under the static loads would not cause the failures to appear. This paper will investigate if the ecological reconditioning techniques “weld toe grinding” and “WIG re-melting weld toe,” influence favourably the behaviour of the welded structures made from HSLA steel, in static and variable loads, if the application of these techniques is justified in both cases and finally which is the environmental impact of applying these techniques. In the paper we will present the chemical composition and mechanical properties of the base and filler materials, micro and macrostructures, graphics with the variation of the micro-hardness, we will perform static and fatigue tensile tests and we will rise the durability curve in the case of the fatigue tests. We will also present a mathematical computational algorithm, which highlights the extent to which these ecological rehabilitation techniques pollute the environment. It is more efficient both for technological and ecological reasons to recondition a product than to manufacture it from the very beginning. Full article

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17 pages, 1724 KiB

Open AccessArticle

Risk Assessment and Mitigation Model for Overseas Steel-Plant Project Investment with Analytic Hierarchy Process—Fuzzy Inference System

by Min-Sung Kim, Eul-Bum Lee, In-Hye Jung and Douglas Alleman

Sustainability 2018, 10(12), 4780; https://doi.org/10.3390/su10124780 - 14 Dec 2018

Cited by 25 | Viewed by 5922

Abstract

This paper presents an analytic hierarchy process (AHP)-fuzzy inference system (FIS) model to aid decision-makers in the risk assessment and mitigation of overseas steel-plant projects. Through a thorough literature review, the authors identified 57 risks associated with international steel construction, operation, and transference [...] Read more.

This paper presents an analytic hierarchy process (AHP)-fuzzy inference system (FIS) model to aid decision-makers in the risk assessment and mitigation of overseas steel-plant projects. Through a thorough literature review, the authors identified 57 risks associated with international steel construction, operation, and transference of new technologies. Pairwise comparisons of all 57 risks by 14 subject-matter experts resulted in a relative weighting. Furthermore, to mitigate human subjectivity, vagueness, and uncertainty, a fuzzy analysis based on the findings of two case studies was performed. From these combined analyses, weighted individual risk soring resulted in the following top five most impactful international steel project risks: procurement of raw materials; design errors and omissions; conditions of raw materials; technology spill prevention plan; investment cost and poor plant availability and performance. Risk mitigation measures are also presented, and risk scores are re-assessed through the AHP-FIS analysis model depicting an overall project risk score reduction. The model presented is a useful tool for industry performing steel project risk assessments. It also provides decision-makers with a better understanding of the criticality of risks that are likely to occur on international steel projects. Full article

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33 pages, 7926 KiB

Open AccessArticle

Implementing Sustainably Managed Fisheries Using Ecological Risk Assessment and Bowtie Analysis

by Karen L. Astles and Roland Cormier

Sustainability 2018, 10(10), 3659; https://doi.org/10.3390/su10103659 - 12 Oct 2018

Cited by 7 | Viewed by 3815

Abstract

Determining the effectiveness of a management system to enable fisheries to harvest sustainably is a key challenge. To fully assess the likelihood that a fishery management system will not achieve its sustainability objectives, the assessment needs to include the whole pathway that leads [...] Read more.

Determining the effectiveness of a management system to enable fisheries to harvest sustainably is a key challenge. To fully assess the likelihood that a fishery management system will not achieve its sustainability objectives, the assessment needs to include the whole pathway that leads to the consequences for management objectives. A crucial aspect of the pathway is the inclusion of management controls. Effectiveness of these management controls determines whether the effects of human pressures on ecological components and their impacts are reduced to a level that will not impede management achieving their objectives. Ecological risk assessments do not provide sufficient information to make decisions about what to change specifically in a management system to ensure a fishery is sustainably managed. Bowtie analysis (BTA) is a method that logically connects the relationships between management objectives, management controls, threats, potential impacts of threats on the fishery resource and the consequences of those impacts on achieving the management objectives. The combination of bowtie analysis and ecological risk assessment enables managers, scientists and stakeholders to evaluate different management controls and research options in response to risk factors and track the effectiveness of the management system. We applied a three-step method of bowtie analysis stage 1, quantitative ecological risk assessment and bowtie analysis stage 2 to evaluate fisheries management and science. We demonstrate these steps using a case study of a commercially fished species in New South Wales, Australia. Full article

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18 pages, 646 KiB

Open AccessArticle

Modelling Perceived Risks Associated to the Entry of Complementors’ in Platform Enterprises: A Case Study

by Elena-Teodora Miron, Anca Alexandra Purcarea and Olivia Doina Negoita

Sustainability 2018, 10(9), 3272; https://doi.org/10.3390/su10093272 - 13 Sep 2018

Cited by 9 | Viewed by 3186

Abstract

Third-party innovators, i.e., complementors, in platform enterprises develop and commercialize add-on products which are one of the main attraction points for customers. To ensure a sustainable evolution of the enterprise, the platform owner needs to attract and retain high-quality third-party innovators. We posit [...] Read more.

Third-party innovators, i.e., complementors, in platform enterprises develop and commercialize add-on products which are one of the main attraction points for customers. To ensure a sustainable evolution of the enterprise, the platform owner needs to attract and retain high-quality third-party innovators. We posit that the transaction costs incurred upon joining the enterprise as well as the controls imposed by the platform owner throughout the development and commercialization process shape the innovator’s perceived risk and influence his decision on whether to join or not. Based on a literature review, the paper at hand proposes a conceptual model for complementors to assess their perceived risk and subsequently evaluates the model in a case study of a platform enterprise for IT-based modelling tools. While some of the propositions are validated, i.e., that informational controls decrease the perceived environmental uncertainty and implicitly the perceived risks, other propositions, such as the fact that asset specificity is a deterrent to entering the platform enterprise could not be validated. Further case studies are necessary to provide a conclusive proof of the proposed model. Full article

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20 pages, 10433 KiB

Open AccessEditor’s ChoiceArticle

Evaluating the Driving Risk of Near-Crash Events Using a Mixed-Ordered Logit Model

by Hasan. A. H. Naji, Qingji Xue, Nengchao Lyu, Chaozhong Wu and Ke Zheng

Sustainability 2018, 10(8), 2868; https://doi.org/10.3390/su10082868 - 13 Aug 2018

Cited by 25 | Viewed by 3673

Abstract

With the considerable increase in ownership of motor vehicles, traffic crashes have become a challenge. This paper presents a study of naturalistic driving conducted to collect driving data. The experiments were performed on different road types in the city of Wuhan in China. [...] Read more.

With the considerable increase in ownership of motor vehicles, traffic crashes have become a challenge. This paper presents a study of naturalistic driving conducted to collect driving data. The experiments were performed on different road types in the city of Wuhan in China. The collected driving data were used to develop a near-crash database, which covers driving behavior, near-crash factors, driving environment, time, demographics, and experience. A new definition of near-crash events is also proposed. The new definition considers potential risks in driving behavior, such as braking pressure, time headway, and deceleration. A clustering analysis was carried out through a K-means algorithm to classify near-crash events based on their risk level. In addition, a mixed-ordered logit model was used to examine the contributing factors associated with the driving risk of near-crash events. The results indicate that ten factors significantly affect the driving risk of near-crash events: deceleration average, vehicle kinetic energy, near-crash causes, congestion on roads, time of day, driving miles, road types, weekend, age, and experience. The findings may be used by transportation planners to understand the factors that influence driving risk and may provide valuable insights and helpful suggestions for improving transportation rules and reducing traffic collisions thus making roads safer. Full article

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20 pages, 317 KiB

Open AccessEditor’s ChoiceReview

Critical Review of the Effects of Glyphosate Exposure to the Environment and Humans through the Food Supply Chain

by Vincenzo Torretta, Ioannis A. Katsoyiannis, Paolo Viotti and Elena Cristina Rada

Sustainability 2018, 10(4), 950; https://doi.org/10.3390/su10040950 - 24 Mar 2018

Cited by 88 | Viewed by 22754

Abstract

Glyphosate is a synthesis product and chemical substance that entered in the global market during the 70s. In the beginning, the molecule was used as an active principle in a wide range of herbicides, with great success. This was mainly due to its [...] Read more.

Glyphosate is a synthesis product and chemical substance that entered in the global market during the 70s. In the beginning, the molecule was used as an active principle in a wide range of herbicides, with great success. This was mainly due to its systemic and non-selective action against vegetable organisms and also to the spread of Genetically Modified Organism (GMO) crops, which over the years were specifically created with a resistance to glyphosate. To date, the product is, for these reasons, the most sprayed and most used herbicide in the world. Because of its widespread diffusion into the environment, it was not long before glyphosate found itself at the center of an important scientific debate about its adverse effects on health and environment. In fact, in 2015 the IARC (International Agency for Research on Cancer, Lyon, France), an organization referred to as the specialized cancer agency of the World Health Organization (WHO, Geneva, Switzerland), classified the substance as “likely carcinogenic” to humans. This triggered an immediate and negative reaction from the producer, who accused the Agency and claimed that they had failed to carry out their studies properly and that these conclusions were largely contradictory to published research. Additionally, in 2015, just a few months after the IARC monography published on glyphosate, the EFSA (European Food Safety Authority, Parma, Italy), another WHO related organization, declared that it was “unlikely” that the molecule could be carcinogenic to humans or that it could cause any type of risk to human health. The conflict between the two organizations of the World Health Organization triggered many doubts, and for this reason, a series of independent studies were launched to better understand what glyphosate’s danger to humans and the environment really was. The results have brought to light how massive use of the herbicide has created over time a real global contamination that has not only affected the soil, surface and groundwater as well as the atmosphere, but even food and commonly used objects, such as diapers, medical gauze, and absorbent for female intimate hygiene. How human health is compromised as a result of glyphosate exposure is a topic that is still very debatable and still unclear and unambiguous. This paper is a review of the results of the main independent recent scientific studies. Full article

18 pages, 12368 KiB

Open AccessFeature PaperEditor’s ChoiceArticle

Rockfall Analysis for Preliminary Hazard Assessment of the Cliff of Taormina Saracen Castle (Sicily)

by Simone Mineo, Giovanna Pappalardo, Michele Mangiameli, Santo Campolo and Giuseppe Mussumeci

Sustainability 2018, 10(2), 417; https://doi.org/10.3390/su10020417 - 06 Feb 2018

Cited by 40 | Viewed by 5114

Abstract

A rockfall analysis at one of the most relevant cultural heritage sites of northeastern Sicily (Italy) is presented herein with the aim of assessing the hazard arising from the unstable conditions of the rock cliff of Taormina city, upon which the Saracen Castle [...] Read more.

A rockfall analysis at one of the most relevant cultural heritage sites of northeastern Sicily (Italy) is presented herein with the aim of assessing the hazard arising from the unstable conditions of the rock cliff of Taormina city, upon which the Saracen Castle is perched on its top. Several rockfalls affected this area in the latest years, representing a serious threat for the safety of inhabitants and tourists. Therefore, the qualitative Evolving Rockfall Hazard Assessment (ERHA) was applied for the hazard zonation, supported by rock mass surveys and Terrestrial Laser Scanner prospecting. Kinematic analysis revealed that the unstable rock failure patterns are represented by planar/wedge sliding and toppling, while simulation of potential rockfalls allowed studying the impact of future events in terms of trajectory and energy. This is higher at the foot of scarps and in steeper sectors, where the application of ERHA identified a critical zone close to the inhabited center, which is one of the main elements at risk, along with a pedestrian tourist path. Achieved results represent a starting point for the definition of risk management strategies and provide a scientific contribution to the study of hazard and risk arising from rockfall occurrence. Full article

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16 pages, 3518 KiB

Open AccessArticle

Uncertainty Analysis of the Estimated Risk in Formal Safety Assessment

by Molin Sun, Zhongyi Zheng and Longhui Gang

Sustainability 2018, 10(2), 321; https://doi.org/10.3390/su10020321 - 26 Jan 2018

Cited by 11 | Viewed by 4093

Abstract

An uncertainty analysis is required to be carried out in formal safety assessment (FSA) by the International Maritime Organization. The purpose of this article is to introduce the uncertainty analysis technique into the FSA process. Based on the uncertainty identification of input parameters, [...] Read more.

An uncertainty analysis is required to be carried out in formal safety assessment (FSA) by the International Maritime Organization. The purpose of this article is to introduce the uncertainty analysis technique into the FSA process. Based on the uncertainty identification of input parameters, probability and possibility distributions are used to model the aleatory and epistemic uncertainties, respectively. An approach which combines the Monte Carlo random sampling of probability distribution functions with the a-cuts for fuzzy calculus is proposed to propagate the uncertainties. One output of the FSA process is societal risk (SR), which can be evaluated in the two-dimensional frequency–fatality (FN) diagram. Thus, the confidence-level-based SR is presented to represent the uncertainty of SR in two dimensions. In addition, a method for time window selection is proposed to estimate the magnitude of uncertainties, which is an important aspect of modeling uncertainties. Finally, a case study is carried out on an FSA study on cruise ships. The results show that the uncertainty analysis of SR generates a two-dimensional area for a certain degree of confidence in the FN diagram rather than a single FN curve, which provides more information to authorities to produce effective risk control measures. Full article

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15 pages, 1685 KiB

Open AccessEditor’s ChoiceArticle

Air Pollution and Human Development in Europe: A New Index Using Principal Component Analysis

by Ana-Maria Săndică, Monica Dudian and Aurelia Ştefănescu

Sustainability 2018, 10(2), 312; https://doi.org/10.3390/su10020312 - 26 Jan 2018

Cited by 10 | Viewed by 4420

Abstract

EU countries to measure human development incorporating the ambient PM2.5 concentration effect. Using a principal component analysis, we extract the information for 2010 and 2015 using the Real GDP/capita, the life expectancy at birth, tertiary educational attainment, ambient PM2.5 concentration, and the death [...] Read more.

EU countries to measure human development incorporating the ambient PM2.5 concentration effect. Using a principal component analysis, we extract the information for 2010 and 2015 using the Real GDP/capita, the life expectancy at birth, tertiary educational attainment, ambient PM2.5 concentration, and the death rate due to exposure to ambient PM2.5 concentration for 29 European countries. This paper has two main results: it gives an overview about the relationship between human development and ambient PM2.5 concentration, and second, it provides a new quantitative measure, PHDI, which reshapes the concept of human development and the exposure to ambient PM2.5 concentration. Using rating classes, we defined thresholds for both HDI and PHDI values to group the countries in four categories. When comparing the migration matrix from 2010 to 2015 for HDI values, some countries improved the development indicator (Romania, Poland, Malta, Estonia, Cyprus), while no downgrades were observed. When comparing the transition matrix using the newly developed indicator, PHDI, the upgrades observed were for Denmark and Estonia, while some countries like Spain and Italy moved to a lower rating class due to ambient PM2.5 concentration. Full article

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13 pages, 1554 KiB

Open AccessEditor’s ChoiceArticle

Minimizing the Health Risks from Hydrocarbon Contaminated Soils by Using Electric Field-Based Treatment for Soil Remediation

by Irina Aura Istrate, Diana Mariana Cocârță, Zucheng Wu and Mihaela Alexandra Stoian

Sustainability 2018, 10(1), 253; https://doi.org/10.3390/su10010253 - 19 Jan 2018

Cited by 17 | Viewed by 4755

Abstract

The present work addresses the assessment of human health risk from soil contaminated with total petroleum hydrocarbons (TPHs) due to crude oil pollution, with a particular focus on the polycyclic aromatic hydrocarbon (PAH) group of carcinogenic and toxic substances. Given that the measured [...] Read more.

The present work addresses the assessment of human health risk from soil contaminated with total petroleum hydrocarbons (TPHs) due to crude oil pollution, with a particular focus on the polycyclic aromatic hydrocarbon (PAH) group of carcinogenic and toxic substances. Given that the measured risk for human health exceeded the accepted level, the study considered an electrochemical remediation method. The laboratory-scale experiments were conducted by using an electric field-based treatment as a possible solution for the remediation of contaminated soil. After 20 days of treatment, while the voltage applied was 15 V (specific voltage of 1 V/cm), the hydrocarbon content was significantly reduced. The parameters measured to determine the overall remediation efficiency were pH, redox potential, ionic strength, soil characteristics, voltage gradient, and zeta potential. The remediation degree observed during the experiments was around 50% for TPHs and 46% for PAHs. The applied remediation method resulted in significant removal efficiency of the tested contaminants from the soil. Consequently, the human health risk assessment for the new degree of contaminants in the soil was achieved. This data demonstrated to what extent the application of the remediation applied technology ensured an acceptable risk under the same exposure conditions for the industrial workers. Full article

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2017

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2440 KiB

Open AccessArticle

Holonic Crisis Handling Model for Corporate Sustainability

by Levente Bakos and Dănuț Dumitru Dumitrașcu

Sustainability 2017, 9(12), 2266; https://doi.org/10.3390/su9122266 - 07 Dec 2017

Cited by 8 | Viewed by 4604

Abstract

The new approaches of risk and crisis management of organizations point to corporate responsibility and corporate sustainability. In the ‘Internet of Everything’ era, when the new media and social networks create the possibility to ruin in a few seconds the reputation of a [...] Read more.

The new approaches of risk and crisis management of organizations point to corporate responsibility and corporate sustainability. In the ‘Internet of Everything’ era, when the new media and social networks create the possibility to ruin in a few seconds the reputation of a company built in decades, it is important to afford the maximum attention to risk management and crisis communication. Long-term sustainability requires a transparent, trustful communication in due time. In our study, we propose a crisis management model that leads to sustainable corporate behaviour. We consider organizations as complex systems, and we use the holonic multiagent modelling concept to depict the emergent behaviour of these systems. This theoretical paper has as its main result a crisis communication model, based on the adaptability feature of holons. In our non-linear approach for unpredictable situations we merged some findings of sustainability theory, corporate social responsibility (CSR) management, crisis communication, the holonic manufacturing concept and the latest security standards in computer communication. Full article

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3191 KiB

Open AccessArticle

Risk Reduction Methods for Managing the Development of Regional Electric Power Industry

by Mikhail Kozhevnikov, Lazar Gitelman, Elena Magaril, Romen Magaril and Alexandra Aristova

Sustainability 2017, 9(12), 2201; https://doi.org/10.3390/su9122201 - 29 Nov 2017

Cited by 9 | Viewed by 4498

Abstract

The development of the regional electric power industry has come to the forefront due to the changing scale, quality, and configuration of electric power infrastructure, and the spread of distributed generation. This gives rise to more stringent requirements regarding the reliability, safety, and [...] Read more.

The development of the regional electric power industry has come to the forefront due to the changing scale, quality, and configuration of electric power infrastructure, and the spread of distributed generation. This gives rise to more stringent requirements regarding the reliability, safety, and environmental impact of electric power supply. This article aims to justify a package of methods that make it possible to identify and minimize investment, production, financial, and environmental risks in order to ensure sustainable development of the regional electric power industry that performs anti-crisis functions, and of individual energy companies. The key method to be employed is integrated resource planning (IRP). As a part of the method, energy conservation, renewable energy sources, and combined heat and power production are considered as equally valid ways of meeting future demand. The authors have designed a methodology for taking into account uncertainty and risk when implementing IRP. The methodology includes analysis of scenarios and decision making processes by calculating past and projected values of profit indicators. When conducting the environmental and economic assessment of an investment project in the electric power industry, the authors suggest using an aggregate indicator of environmental and economic effectiveness that is calculated on the basis of a combination of locally significant positive and negative environmental and economic impacts of the project. The authors formulate conceptual provisions that serve as the foundation for a promising model of the regional electric power industry and which contain recommendations for managing the development of the industry while minimizing organizational, market, and technological risks. Full article

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4072 KiB

Open AccessArticle

Smart City Platform Development for an Automated Waste Collection System

by Cicerone Laurentiu Popa, George Carutasu, Costel Emil Cotet, Nicoleta Luminita Carutasu and Tiberiu Dobrescu

Sustainability 2017, 9(11), 2064; https://doi.org/10.3390/su9112064 - 10 Nov 2017

Cited by 50 | Viewed by 8986

Abstract

Nowadays, governments and companies are looking for solutions to increase the collection level of various waste types by using new technologies and devices such as smart sensors, Internet of Things (IoT), cloud platforms etc. In order to fulfil this need, this paper presents [...] Read more.

Nowadays, governments and companies are looking for solutions to increase the collection level of various waste types by using new technologies and devices such as smart sensors, Internet of Things (IoT), cloud platforms etc. In order to fulfil this need, this paper presents solutions provided by a research project involving the design, development and implementation of fully automated waste collection systems with an increased usage degree, productivity and storage capacity. The paper will focus on the main results of this research project in turning the automated waste collection system into a smart system so that it can be easily integrated in any smart city infrastructure. For this purpose, the Internet of Things platform for the automated waste collection system provided by the project will allow real time monitoring and communication with central systems. Details about each module are sent to the central systems: various modules’ statuses (working, blocked, needs repairs or maintenance etc.); equipment status; storage systems status (allowing full reports for all waste types); the amount of waste for each module, allowing optimal discharging; route optimization for waste discharging etc. To do that, we describe here an IoT cloud solution integrating device connection, data processing, analytics and management. Full article

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9840 KiB

Open AccessArticle

Model to Assess the Quality of Magmatic Rocks for Reliable and Sustainable Constructions

by Mihaela Toderaş, Roland Iosif Moraru, Ciprian Danciu, Grigore Buia and Lucian-Ionel Cioca

Sustainability 2017, 9(10), 1925; https://doi.org/10.3390/su9101925 - 24 Oct 2017

Cited by 1 | Viewed by 3778

Abstract

Geomechanical assessment of rocks requires knowledge of phenomena that occur under the influence of internal and external factors at a macroscopic or microscopic scale, when rocks are submitted to different actions. To elucidate the quantitative and qualitative geomechanical behavior of rocks, knowing their [...] Read more.

Geomechanical assessment of rocks requires knowledge of phenomena that occur under the influence of internal and external factors at a macroscopic or microscopic scale, when rocks are submitted to different actions. To elucidate the quantitative and qualitative geomechanical behavior of rocks, knowing their geological and physical–mechanical characteristics becomes an imperative. Mineralogical, petrographical and chemical analyses provided an opportunity to identify 15 types of igneous rocks (gabbro, diabases, granites, diorites, rhyolites, andesites, and basalts), divided into plutonic and volcanic rocks. In turn, these have been grouped into acidic, neutral (intermediate) and basic magmatites. A new ranking method is proposed, based on considering the rock characteristics as indicators of quantitative assessment, and the grading system, by given points, allowing the rocks framing in admissibility classes. The paper is structured into two parts, experimental and interpretation of experimental data, showing the methodology to assess the quality of igneous rocks analyzed, and the results of theoretical and experimental research carried out on the analyzed rock types. The proposed method constitutes an appropriate instrument for assessment and verification of the requirements regarding the quality of rocks used for sustainable construction. Full article

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989 KiB

Open AccessArticle

Risk Indicators and Road Accident Analysis for the Period 2012–2016

by Lucian-Ionel Cioca and Larisa Ivascu

Sustainability 2017, 9(9), 1530; https://doi.org/10.3390/su9091530 - 28 Aug 2017

Cited by 43 | Viewed by 7696

Abstract

Road accidents are a major societal issue for every country. The purpose of this paper is to assess the number of traffic and road accidents depending on a series of variables (collision mode, road configuration, conditions of occurrence, road category, type of vehicle [...] Read more.

Road accidents are a major societal issue for every country. The purpose of this paper is to assess the number of traffic and road accidents depending on a series of variables (collision mode, road configuration, conditions of occurrence, road category, type of vehicle involved, personal factors, and length of time of the driving license) in Romania from 2012–2016. The analysis of the road accident trend identifies the causes of accidents, road safety performance indicators, and risk indicators. Having these identified data, a framework is proposed for improving the road safety system and reducing accidents. The Romanian Police, the National Institute of Statistics (NIS) in Romania, and the European Commission provided the data used for this analysis. The data obtained from these databases are analysed and evaluated according to a series of variables. This paper will outline an informative image of road accidents and establish a framework for reducing their effects in road transport. As a result of the analysis, we have seen that the combination of vehicles and personal factors influences the number of traffic and road accidents. Full article

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3871 KiB

Open AccessArticle

Driving Force Analysis of the Temporal and Spatial Distribution of Flash Floods in Sichuan Province

by Yesen Liu, Ximin Yuan, Liang Guo, Yaohuan Huang and Xiaolei Zhang

Sustainability 2017, 9(9), 1527; https://doi.org/10.3390/su9091527 - 28 Aug 2017

Cited by 37 | Viewed by 6208

Abstract

Flash floods are important natural disasters in China that can result in casualties and property losses. In this paper, we present a quantitative approach to examine the driving factors of the spatiotemporal distribution of flash floods based on a geographical detector. The environmental [...] Read more.

Flash floods are important natural disasters in China that can result in casualties and property losses. In this paper, we present a quantitative approach to examine the driving factors of the spatiotemporal distribution of flash floods based on a geographical detector. The environmental background condition (elevation, slope, etc.), precipitation, and human activity factors, as well as changes in these factors, are investigated in Sichuan Province via a driving force analysis. The results show that heavy precipitation is the most important driver, with power of determinant (PD) values of 0.71 and 0.77 for the spatial distributions of flash floods from 1995 to 2004 and from 2005 to 2014, respectively. The PDs of population density are 0.65 and 0.78 in the same two periods, while those of elevation are 0.59 and 0.73. Precipitation variability is the most important driver of the spatiotemporal variability of flash floods, followed by GDP density and population density, with PDs of 0.48, 0.29, and 0.27, respectively. The results show that human activities and precipitation are the primary driving forces of the spatiotemporal variability of flash floods and should be the focus of flash flood prevention and forecasting. Full article

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1940 KiB

Open AccessReview

Applications of the Standardized Nordic Questionnaire: A Review

by Laura López-Aragón, Remedios López-Liria, Ángel-Jesús Callejón-Ferre and Marta Gómez-Galán

Sustainability 2017, 9(9), 1514; https://doi.org/10.3390/su9091514 - 25 Aug 2017

Cited by 56 | Viewed by 19232

Abstract

Sustainability seeks to provide economically viable products in an environmentally friendly way while respecting worker rights. Physical wellbeing forms part of these rights. Musculoskeletal disorders (MSD) diminish productivity, cause absence from work, impose costs on the public health system and can cast doubt [...] Read more.

Sustainability seeks to provide economically viable products in an environmentally friendly way while respecting worker rights. Physical wellbeing forms part of these rights. Musculoskeletal disorders (MSD) diminish productivity, cause absence from work, impose costs on the public health system and can cast doubt on the sustainability of a company or a product. The objective of the present work is to review the literature on the application of the Nordic Musculoskeletal Questionnaire (NMQ) on a worldwide level. In this work, the use of the NMQ has been classified by categories of knowledge, countries and years. The search was made using “Web of Science-Core Collection”. In total, 259 articles were chosen from scientific journals and conferences related, according to the title and or abstract, to the practical application of the questionnaire. In conclusion, the NMQ has been applied mainly in three sectors: “activities related to treating human health and social issues”, “manufacturing industries”, and “agriculture, livestock, fishing, and forestry”. The NMQ is an indirect method commonly used individually or complemented with other methods for evaluating the MSD and possible associated psychosocial and labour risks. The use of NMQ can help in the evaluation of the sustainability of a company. Full article

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854 KiB

Open AccessArticle

Factors Affecting Spatial and Temporal Concentration Variability of Pharmaceuticals: Comparison between Two WWTPs

by Cristiana Morosini, Milena Marsoni, Vincenzo Torretta, Fabio Conti, Marco Ragazzi, Elena Cristina Rada and Gabriela Cioca

Sustainability 2017, 9(8), 1466; https://doi.org/10.3390/su9081466 - 18 Aug 2017

Cited by 17 | Viewed by 4212

Abstract

The presence of emerging organic micropollutants (such as pharmaceuticals) in sewage has been, for a long time, an issue of great concern within the international scientific debate. This item represents one of the main challenges related to a sustainable development, with particular concern [...] Read more.

The presence of emerging organic micropollutants (such as pharmaceuticals) in sewage has been, for a long time, an issue of great concern within the international scientific debate. This item represents one of the main challenges related to a sustainable development, with particular concern to the public health control. While most of the work has been concentrated on their detection and the evaluation of their average level, little is known about the spatial and temporal variability of concentrations of these compounds in the effluent and its capability to affect the concentrations in time of the receiving water body. In this study, three sampling campaigns were carried out at two different wastewater treatment plants (WWTPs) in Varese area (Northern Italy) with the aim of monitoring the occurrence of some pharmaceuticals to evaluate their removal efficiency. The detected pharmaceuticals were: Ofloxacin, Ibuprofen, Atenolol, Bezafibrate, Carbamazepine, Salbutamol, Cyclophosphamide and Hydrochlorothiazide. The results obtained, together with the analysis of the characteristics of the chemicals and of the two WWTPs, allowed evaluating the factors affecting the spatial and temporal concentration variability in effluent waters and the potential influence of this variability in driving the exposure of the aquatic ecosystems in the receiving water body. Full article

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1509 KiB

Open AccessArticle

Crude Oil Contaminated Sites: Evaluation by Using Risk Assessment Approach

by Diana Mariana Cocârţă, Mihaela Alexandra Stoian and Aykan Karademir

Sustainability 2017, 9(8), 1365; https://doi.org/10.3390/su9081365 - 03 Aug 2017

Cited by 42 | Viewed by 6973

Abstract

Soils contaminated with toxic and persistent pollutants pose different and serious hazards to the environment and human health. Multidisciplinary procedures that are considering models for the prediction of risk for long-term exposure are needed. The present paper illustrates the operating mode and utility [...] Read more.

Soils contaminated with toxic and persistent pollutants pose different and serious hazards to the environment and human health. Multidisciplinary procedures that are considering models for the prediction of risk for long-term exposure are needed. The present paper illustrates the operating mode and utility of an environmental software able toe0) integrates the dose-response modeling as a major part of hazard characterization in order to assess the quantitative risk from carcinogens. In this way, risk assessment is used as a method for the investigation of contaminated sites. The method is demonstrated on a Romanian field site, contaminated with petroleum products. For the assessment of human health risks from oil-contaminated sites, the contaminants of concern are considered as polycyclic aromatic hydrocarbons (PAHs), monocyclic aromatic hydrocarbons (MAHs), and heavy metals, chemicals known as human carcinogens. Quantitative risk calculations revealed an individual risk of 1.07 × 10⁻⁵ for children and 6.89 × 10⁻⁶ for adults. The paper represents a utility example of an environmental software solution that could be considered by decision-making factors in approving certain projects. The software tool is helpful for protecting the environment and human health. Full article

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215 KiB

Open AccessArticle

Trend Analysis of Construction Industrial Accidents in Korea from 2011 to 2015

by Byung Wan Jo, Yun Sung Lee, Jung Hoon Kim and Rana Muhammad Asad Khan

Sustainability 2017, 9(8), 1297; https://doi.org/10.3390/su9081297 - 25 Jul 2017

Cited by 42 | Viewed by 5176

Abstract

The purpose of this study is to analyze the results of construction accidents occurred from 2011 to 2015 in Korea. The annual reports from the Ministry of Employment and Labor, Korea (MOEL), and the annual reports from the Statistics Korea were used for [...] Read more.

The purpose of this study is to analyze the results of construction accidents occurred from 2011 to 2015 in Korea. The annual reports from the Ministry of Employment and Labor, Korea (MOEL), and the annual reports from the Statistics Korea were used for the analysis in this study. The gender, age, company size and accident types were chosen as a category to analyze the trend of various occupational accidents. In order to analyze the characteristics of construction accidents, incidence rates (IRs) and mortality rates (MRs) were calculated. Further, T-tests and ANOVA analysis were performed to discover the relationships among IRs, MRs, and chosen categories. Male workers’ IRs and MRs were significantly higher than those of female workers. Construction workers over 40 years of age suffered the most from occupational injuries. In terms of company size, as company size increases, both IRs and MRs tended to decrease. Occupational injuries caused by falls were higher than other accident types each year. This paper will be able to provide information on occupational accidents for establishing strategies to reduce the accident rate in construction sectors of Korea. Full article

2734 KiB

Open AccessArticle

Considerations on Applying the Method for Assessing the Level of Safety at Work

by Costica Bejinariu, Doru-Costin Darabont, Elena-Raluca Baciu, Iuliana-Silvia Georgescu, Mihai-Adrian Bernevig-Sava and Constantin Baciu

Sustainability 2017, 9(7), 1263; https://doi.org/10.3390/su9071263 - 18 Jul 2017

Cited by 27 | Viewed by 5311

Abstract

The application of the method for assessing the level of safety at work starts with a document that contains the cover page, the description of the company (name, location, core business, organizational chart etc.), description of the work system, a detailed list of [...] Read more.

The application of the method for assessing the level of safety at work starts with a document that contains the cover page, the description of the company (name, location, core business, organizational chart etc.), description of the work system, a detailed list of its components, and a brief description of the assessment method. It continues with a Microsoft Excel document, which represents the actual application of the method and, finally, there is another document presenting conclusions, proposals, and prioritizations, which leads to the execution of the Prevention and Protection Plan. The present paper approaches the issue of developing the Microsoft Excel document, an essential part of the method for assessing the level of safety at work. The document is divided into a variable number of worksheets, showing the risk categories of general, specific, and management. Full article

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1481 KiB

Open AccessArticle

The Evaluation and Application of the TRIZ Method for Increasing Eco-Innovative Levels in SMEs

by Cristina Feniser, Gheorghe Burz, Marian Mocan, Larisa Ivascu, Vasile Gherhes and Calin Ciprian Otel

Sustainability 2017, 9(7), 1125; https://doi.org/10.3390/su9071125 - 27 Jun 2017

Cited by 36 | Viewed by 8744

Abstract

If in the past, the success of innovation was measured primarily in the economic sphere, recently the non-economic sphere has increasingly become more of a matter of corporate management and, therefore, of innovation management. Management’s acquisition of non-economic aspects has been strongly influenced [...] Read more.

If in the past, the success of innovation was measured primarily in the economic sphere, recently the non-economic sphere has increasingly become more of a matter of corporate management and, therefore, of innovation management. Management’s acquisition of non-economic aspects has been strongly influenced by the vision of sustainable development. Sustainability is a direction of action important for innovation as well, integrating economic, social, and environmental responsibility in the management of innovation, leading to sustainability-oriented innovation (SOI). Research on SOI approached innovation processes has been carried out in large companies, however in recent years the use of TRIZ (teoriya resheniya izobretatelskikh zadach) tools has been tried for SOI. The TRIZ-based approach is a valuable tool because it does not require an encyclopedic knowledge of field-specific technology and it enables the expansion of the scope of problem solutions beyond the skills of the team members. This paper discusses the concepts of sustainability, innovation, and risk management in small and medium-sized enterprises (SMEs) for the purpose of developing a flow chart for the implementation of the TRIZ method in SMEs and for evaluating the state of innovation in such companies. Through the use of the TRIZ method in the field of SMEs, fast and efficient processes, products, and sustainable services have been obtained. Full article

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257 KiB

Open AccessArticle

Monitoring, Human Health Risk Assessment and Optimized Management for Typical Pollutants in Indoor Air from Random Families of University Staff, Wuhan City, China

by Xiyao Chen, Fei Li, Chaoyang Liu, Jun Yang, Jingdong Zhang and Chunlin Peng

Sustainability 2017, 9(7), 1115; https://doi.org/10.3390/su9071115 - 26 Jun 2017

Cited by 14 | Viewed by 6601

Abstract

In this study, 31 workers at a university were randomly selected for indoor environmental monitoring in Wuhan. Two indicators, formaldehyde and total volatile organic compounds (TVOC), and using 139 monitoring points, monitored the indoor environment (including home and workplace) as well as the [...] Read more.

In this study, 31 workers at a university were randomly selected for indoor environmental monitoring in Wuhan. Two indicators, formaldehyde and total volatile organic compounds (TVOC), and using 139 monitoring points, monitored the indoor environment (including home and workplace) as well as the interior space of the main furniture. This study carried out the environmental quality assessment for TVOC based on the dB index method and the health risk assessment of indoor formaldehyde for the university staff receptors and, then focused on health risk in home environment to carry out detailed environmental health management. The results showed that TVOC in the three types of home spaces exceeded about 80% of the national standard. The excessive formaldehyde ratios for kitchens (79%), bedrooms (77%) and living rooms (74%) were calculated. Formaldehyde health risks all exceeded the United States Environmental Protection Agency, (USEPA) acceptable risk threshold. The formaldehyde concentrations in workplaces were about 0.03 mg·m⁻³. While the risk contribution of the home environment to the total average health risk (0.0014, whether male and female) is about 96%. For the adapted and unadapted persons, 90% and 55% of the monitoring points were located within the long-term tolerable range of TVOC decibel application, respectively. Long-term exposure to such an environment can lead to the Sick Building Syndrome (SBS). On the other hand, through comparison of the concentration of pollutants in the interior spaces of furniture and home spaces, it was determined tentatively that the pollutants were mainly concentrated in rarely used furniture. In summary, the air pollution in the studied homes of university staff was much serious than that in workplaces, which showed a need to manage TVOC and formaldehyde pollution by the three means: the purchase of green products, removal of internal pollution from furniture, and creating a good indoor volatile diffusion environment to create a healthy home environment. Full article

903 KiB

Open AccessArticle

Using an AHP-ISM Based Method to Study the Vulnerability Factors of Urban Rail Transit System

by Liangliang Song, Qiming Li, George F. List, Yongliang Deng and Ping Lu

Sustainability 2017, 9(6), 1065; https://doi.org/10.3390/su9061065 - 20 Jun 2017

Cited by 46 | Viewed by 6122

Abstract

As a sustainable means of public transportation, urban rail transit system undergoes rapid expansion in China. How to provide a safe and reliable service has been the subject of growing attention in this context. However, such work is challenging because rail transit systems [...] Read more.

As a sustainable means of public transportation, urban rail transit system undergoes rapid expansion in China. How to provide a safe and reliable service has been the subject of growing attention in this context. However, such work is challenging because rail transit systems are quite vulnerable and influenced by a set of interacting factors. Studying these vulnerability factors will contribute significantly to the operation of rail transit system. From this perspective, this paper made an exploration of the vulnerability factors based on an integrated method consisting of AHP (Analytical Hierarchy Process) and ISM (Interpretative Structural Modeling). Based on literature review, 21 vulnerability factors were identified. Subsequently, expert elicitation was employed to ascertain the importance of each factor and the interrelations among them. The results suggest that management and individual factors have the highest importance weights and the interrelations among vulnerability factors could be expressed as a five-layer structure, in which management factors were inclined to be at the lower level. The research provides valuable information for decision makers to take proactive strategies and reinforcement policies to guarantee safety operation of urban rail transit system and ensure urban public safety, which could promote the sustainable development of cities. Full article

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4138 KiB

Open AccessArticle

Study of Water Environmental Cumulative Risk Assessment Based on Control Unit and Management Platform Application in Plain River Network

by Xue Wang, Yong Pang, Xiao Wang, Qi Zhou and Rongrong Xie

Sustainability 2017, 9(6), 975; https://doi.org/10.3390/su9060975 - 07 Jun 2017

Cited by 9 | Viewed by 4319

Abstract

As the gradual deterioration of the environment, the method of environmental risk assessment has been developed from basing only on a single source to basing on a cumulative risk source. In accordance with the water environment features of the plain river network area, [...] Read more.

As the gradual deterioration of the environment, the method of environmental risk assessment has been developed from basing only on a single source to basing on a cumulative risk source. In accordance with the water environment features of the plain river network area, a cumulative risk assessment system of water environment in the plain river network area was established in this paper, the design process for which could be divided into three step: (1) Control unit divided reasonably was chosen as the basic unit for water quality management. (2) On that basis, according to the characteristics of the plain river network area, the cumulative risk indexes were selected. The index weight is calculated using entropy method and analytic hierarchy process (AHP), which could determine the risk grade of each control unit. (3) The cumulative risk assessment method is coupled to the existing water environment management platform. The platform with a dynamic database can realize the dynamic calculation and visualization of the cumulative risk grade. In this paper, the Zhejiang area of Taihu Basin was selected to be the research target as the typical plain river network area. Thirty-five control units were divided with regional water environment and control section. Taking the data in the year 2011 as example, the proposed cumulative risk assessment method was used to identify the control units in different grades and the results demonstrated that the numbers of high-, medium-, low- and extremely low-risk control units are 13, 12, 5 and 5, respectively. It is necessary to give priority to the high-risk control unit. Therefore, the cumulative risk assessment method based on the control unit provides an essential theoretical basis for reducing the probability of water pollution and reducing the degree of water pollution damage. Full article

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1601 KiB

Open AccessArticle

Management of a Tourist Village Establishment in Mountainous Area through Analysis of Costs and Incomes

by Ramona Ciolac, Ciprian Rujescu, Simona Constantinescu, Tabita Adamov, Mihaela Cristina Dragoi and Ramona Lile

Sustainability 2017, 9(6), 875; https://doi.org/10.3390/su9060875 - 23 May 2017

Cited by 23 | Viewed by 6165

Abstract

The popularity of rural areas and especially the mountainous ones, as a possibility to spend the vacation has increased in most countries. Almost all mountain areas can provide great opportunities for the development of various forms of rural tourism, there being many examples [...] Read more.

The popularity of rural areas and especially the mountainous ones, as a possibility to spend the vacation has increased in most countries. Almost all mountain areas can provide great opportunities for the development of various forms of rural tourism, there being many examples according to which many mountain areas, through appropriate and effective strategies of capitalizing the resources through the forms of rural tourism, start from the pioneer stage to a real valuable alternative in socio-economic terms for the rural area. One of the concepts that are increasingly used is the “tourist village”, its main issue, consisting in the return of the investment, an aspect that we will discuss in this paper. The paper presents an analysis of the way in which the occupancy degree affects the period of amortization of the initial investment. Concretely, in the case of the medium-sized tourist village, the minimum occupancy degree for the amortization of the initial investment, starts from about 25% for the investment without a loan, but subsidy in proportion of 50% and reaches at about 85% in the case of an investment with loan, for a period of 10 years, without advance or subsidy and with an interest of 7%. Initial investments were established for a holiday village in the Romanian countryside. Full article

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2401 KiB

Open AccessArticle

Magnetic (Fe₃O₄) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling

by Alexandre Konate, Xiao He, Zhiyong Zhang, Yuhui Ma, Peng Zhang, Gibson Maswayi Alugongo and Yukui Rui

Sustainability 2017, 9(5), 790; https://doi.org/10.3390/su9050790 - 10 May 2017

Cited by 216 | Viewed by 8804

Abstract

Heavy metal pollution is not only a hazard to living organisms but also an important worldwide environmental concern. Experiments were performed to investigate the physiological mechanisms of magnetic (Fe₃O₄) nanoparticles (nano-Fe₃O₄) mitigation of the toxicity [...] Read more.

Heavy metal pollution is not only a hazard to living organisms but also an important worldwide environmental concern. Experiments were performed to investigate the physiological mechanisms of magnetic (Fe₃O₄) nanoparticles (nano-Fe₃O₄) mitigation of the toxicity of heavy metals (Pb, Zn, Cd and Cu) in wheat seedlings. All the Petri dishes with germinating seedlings (1d) were covered, sealed with parafilm, and placed in a dark growth chamber. All parameters (seedling growth inhibition, heavy metal accumulation, enzymatic activities, and reducing effects of nano-Fe₃O₄ on heavy metal toxicity) were analyzed only after five days. The results showed that the tested heavy metals significantly affected the growth of wheat seedling by decreasing root length, shoot length and even death at 10 mM concentration in the case of Cd and Cu. Heavy metals exposure also showed that superoxide dismutase (SOD) and peroxidases (POD) activities decreased significantly when the malondialdehyde (MDA) content was significantly higher in wheat seedlings. Addition of magnetic (Fe₃O₄) nanoparticles (2000 mg/L) in each heavy metal solution (1 mM) significantly decreased the growth inhibition and activated protective mechanisms to reduce oxidative stress induced by heavy metals in the wheat seedlings. The reducing effects of nano-Fe₃O₄ against heavy metals stress could be dependent on the increase in the enzyme activity (SOD and POD). Their protective role was confirmed by the decrease in MDA content. The alleviating effect of nano-Fe₃O₄ is associated with their adsorption capacity of heavy metals. Full article

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26648 KiB

Open AccessArticle

Analysis of Potential Rockfalls on a Highway at High Slopes in Cold-Arid Areas (Northwest Xinjiang, China)

by Peng Yang, Yanjun Shang, Yanyan Li, Huilun Wang and Kun Li

Sustainability 2017, 9(3), 414; https://doi.org/10.3390/su9030414 - 10 Mar 2017

Cited by 9 | Viewed by 4755

Abstract

In the steep mountainous areas in northwest Xinjiang, where rock mass is broken seriously due to intense freeze thaw weathering, rockfall is one of the most common geological hazards on highway high slopes. Engineering geological investigations on geological hazards along a segment of [...] Read more.

In the steep mountainous areas in northwest Xinjiang, where rock mass is broken seriously due to intense freeze thaw weathering, rockfall is one of the most common geological hazards on highway high slopes. Engineering geological investigations on geological hazards along a segment of the G219 highway was conducted, indicating that rockfalls on the high slopes threaten the safety of vehicles on the highway seriously. In this study, a combination of field investigations, laboratory experiments and numerical simulation methods was performed to identify unstable high slopes, simulate the rockfall trajectories and assess the rockfall hazard in the study area. The results show that there are five high slopes (i.e., W01, W02, …, W05) where rockfall hazard is extremely serious. Considering both the total kinetic energy and the accumulation rate of blocks, rockfall influence area zonation was performed, leading to the conclusions that the sections of highway on W01 to W05 are located at the medium-intensity low-accumulation zone, high-intensity medium-accumulation zone, high-intensity low-accumulation zone, high-intensity low-accumulation zone and medium-intensity high-accumulation zone, respectively. Based on the analysis, a zonation map was accomplished, which could help engineers select effective mitigation measures against rockfalls to avoid casualty and property losses. Full article

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2840 KiB

Open AccessArticle

Managing Reputational Risk through Environmental Management and Reporting: An Options Theory Approach

by Juan Pineiro-Chousa, Marcos Vizcaíno-González, María Ángeles López-Cabarcos and Noelia Romero-Castro

Sustainability 2017, 9(3), 376; https://doi.org/10.3390/su9030376 - 04 Mar 2017

Cited by 24 | Viewed by 8023

Abstract

Reputation is a complex and multidimensional concept that may be organized in downside and upside reputational risk. In this article, we present a formal modelling for the management capabilities of environmental management and reporting over reputational risk, considering that reputational risk is becoming [...] Read more.

Reputation is a complex and multidimensional concept that may be organized in downside and upside reputational risk. In this article, we present a formal modelling for the management capabilities of environmental management and reporting over reputational risk, considering that reputational risk is becoming increasingly important for organizations and it directly depends on the information available about companies’ environmental performances. As long as the effectiveness of communication and disclosure plays a key role in the process, the usefulness of environmental management and reporting as a hedging instrument for reputational risk is addressed through different levels of information transparency. When considering a scenario of voluntary reporting, we show that environmentally concerned companies can reduce the cost of environmental management as a reputational risk strategy, as well as reducing the potential loss of reputational value from reputational threats and increasing the potential profit from reputational opportunities. In the context of mandatory reporting, we highlight the role of assurance companies as bearers of the risk of bad reputations for non-concerned companies. As a result, this novel approach applies theoretical oriented research from options theory to reputational risk management literature, so that it benefits from the option’s well known theory, robustness, and conclusions. Full article

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