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Greenhouse Gas Reduction
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Greenhouse Gas Reduction

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Climate Change".

Deadline for manuscript submissions: closed (4 April 2023) | Viewed by 5410

Special Issue Editor

Dr. Xiaoya Xu

E-Mail Website
Guest Editor
College of Geography and Environment, Shandong Normal University, Jinan 250014, China
Interests: mitigation of greenhouse gases (N2O, CH4 and CO2) and their response to global climate change, especially focus on establishing the relationships between functional microbes and greenhouse gases which involved in the nitrogen and carbon cycles at typical habitats of terrestrial ecosystems

Special Issue Information

Dear Colleagues,

The major greenhouse gases (GHGs) contributing to global warming include carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). Their growing concentrations continue to raise global average temperatures, while the feedback effects not only destabilize ecosystems but also drive global warming, which further alters nutrient biogeochemical processes on a global scale.

Soil microorganisms and their activities play a key role in GHG emissions and mitigation, combining the carbon cycle with elemental cycles such as nitrogen and sulfur. In addition to the metabolic reactions and chemistry of various microorganisms, changes in environmental conditions including global warming, precipitation changes, nitrogen deposition and plant types affect nutrient cycling in soils and inevitably have positive or negative feedback on GHG emissions. Moreover, the unique habitats of different ecosystems such as rice paddies, estuaries and oceans make this feedback mechanism more elusive.

Thus, this Special Issue aims to elucidate microbially mediated GHG emission processes and their driving mechanisms under different ecosystems, which are important for mitigating GHG emissions and clarifying their feedback mechanisms to global environmental change. We welcome original research articles, perspectives and reviews involving environmental, microbial and theoretical aspects related to GHGs to improve our understanding of the role of microbes in mediating GHG emissions and mitigation.

Dr. Xiaoya Xu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • carbon dioxide
  • methane
  • nitrous oxide
  • functional microbes
  • nutrient cycles
  • GHG mitigation

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Published Papers (3 papers)

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Research

15 pages, 2045 KiB  
Article
Soil Fungal Community Structure and Its Effect on CO2 Emissions in the Yellow River Delta
by Linhui Ji, Yu Xin and Dufa Guo
Int. J. Environ. Res. Public Health 2023, 20(5), 4190; https://doi.org/10.3390/ijerph20054190 - 26 Feb 2023
Cited by 4 | Viewed by 1488
Abstract
Soil salinization is one of the most compelling environmental problems on a global scale. Fungi play a crucial role in promoting plant growth, enhancing salt tolerance, and inducing disease resistance. Moreover, microorganisms decompose organic matter to release carbon dioxide, and soil fungi also [...] Read more.
Soil salinization is one of the most compelling environmental problems on a global scale. Fungi play a crucial role in promoting plant growth, enhancing salt tolerance, and inducing disease resistance. Moreover, microorganisms decompose organic matter to release carbon dioxide, and soil fungi also use plant carbon as a nutrient and participate in the soil carbon cycle. Therefore, we used high-throughput sequencing technology to explore the characteristics of the structures of soil fungal communities under different salinity gradients and whether the fungal communities influence CO2 emissions in the Yellow River Delta; we then combined this with molecular ecological networks to reveal the mechanisms by which fungi adapt to salt stress. In the Yellow River Delta, a total of 192 fungal genera belonging to eight phyla were identified, with Ascomycota dominating the fungal community. Soil salinity was the dominant factor affecting the number of OTUs, Chao1 index, and ACE index of the fungal communities, with correlation coefficients of −0.66, 0.61, and −0.60, respectively (p < 0.05). Moreover, the fungal richness indices (Chao1 and ACE) and OTUs increased with the increase in soil salinity. Chaetomium, Fusarium, Mortierella, Alternaria, and Malassezia were the dominant fungal groups, leading to the differences in the structures of fungal communities under different salinity gradients. Electrical conductivity, temperature, available phosphorus, available nitrogen, total nitrogen, and clay had a significant impact on the fungal community structure (p < 0.05). Electrical conductivity had the greatest influence and was the dominant factor that led to the difference in the distribution patterns of fungal communities under different salinity gradients (p < 0.05). The node quantity, edge quantity, and modularity coefficients of the networks increased with the salinity gradient. The Ascomycota occupied an important position in the saline soil environment and played a key role in maintaining the stability of the fungal community. Soil salinity decreases soil fungal diversity (estimate: −0.58, p < 0.05), and soil environmental factors also affect CO2 emissions by influencing fungal communities. These results highlight soil salinity as a key environmental factor influencing fungal communities. Furthermore, the significant role of fungi in influencing CO2 cycling in the Yellow River Delta, especially in the environmental context of salinization, should be further investigated in the future. Full article
(This article belongs to the Special Issue Greenhouse Gas Reduction)
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12 pages, 2718 KiB  
Article
Black Plastic Film Mulching Increases Soil Nitrous Oxide Emissions in Arid Potato Fields
by Chaobiao Meng, Jianyu Zhao, Ning Wang, Kaijing Yang and Fengxin Wang
Int. J. Environ. Res. Public Health 2022, 19(23), 16030; https://doi.org/10.3390/ijerph192316030 - 30 Nov 2022
Cited by 6 | Viewed by 1591
Abstract
Black plastic film mulching is a common practice for potato production in the arid area of Northwest China. Many studies have reported the significant positive effect of black plastic film mulch on potato harvest, while the effect of black plastic film mulch treatment [...] Read more.
Black plastic film mulching is a common practice for potato production in the arid area of Northwest China. Many studies have reported the significant positive effect of black plastic film mulch on potato harvest, while the effect of black plastic film mulch treatment on soil nitrous oxide (N2O) emissions is still unclear. As a consequence, this study aimed to examine the effect of black plastic film mulch treatment on N2O emission from arid upland potato fields. With the static chamber-gas chromatography method, soil N2O emissions were measured. The results showed that black plastic film mulching treatment significantly increased cumulative soil N2O emissions by 21–26% compared with non-mulched treatment. Cumulative N2O emission positively correlated with soil temperature, soil moisture, soil CO2 concentration, and amoA-AOB abundance. This study indicated that black plastic film mulching, mainly through increasing soil temperature and soil moisture, increasing soil carbon dioxide (CO2) concentration, and promoting the abundance of nitrification-related functional gene of amoA-AOB, regulated N2O emissions. This study also highlighted that the specific soil environment under black plastic film mulch is conducive to N2O emissions and lay the foundation for settling the contradiction between food production and greenhouse gas mitigation in upland soils. The negative effects of black plastic film mulching on the environment should be considered in future applications in food production. Full article
(This article belongs to the Special Issue Greenhouse Gas Reduction)
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19 pages, 2619 KiB  
Article
Functional Diversity and CO2 Emission Characteristics of Soil Bacteria during the Succession of Halophyte Vegetation in the Yellow River Delta
by Yu Xin, Linhui Ji, Zihao Wang, Kun Li, Xiaoya Xu and Dufa Guo
Int. J. Environ. Res. Public Health 2022, 19(19), 12919; https://doi.org/10.3390/ijerph191912919 - 9 Oct 2022
Cited by 6 | Viewed by 1914
Abstract
Carbon dioxide (CO2) is the most important greenhouse gas in the atmosphere, which is mainly derived from microbial respiration in soil. Soil bacteria are an important part of the soil ecosystem and play an important role in the process of plant [...] Read more.
Carbon dioxide (CO2) is the most important greenhouse gas in the atmosphere, which is mainly derived from microbial respiration in soil. Soil bacteria are an important part of the soil ecosystem and play an important role in the process of plant growth, mineralization, and decomposition of organic matter. In this paper, we discuss a laboratory incubation experiment that we conducted to investigate the CO2 emissions and the underlying bacterial communities under the natural succession of halophyte vegetation in the Yellow River Delta by using high-throughput sequencing technology and PICRUSt functional prediction. The results showed that the bacterial abundance and diversity increased significantly along with the succession of halophyte vegetation. Metabolic function is the dominant function of soil bacteria in the study area. With the succession of halophyte vegetation, the rate of CO2 emissions gradually increased, and were significantly higher in soil covered with vegetation than that of the bare land without vegetation coverage. These results helped to better understand the relationships of soil bacterial communities under the background of halophyte vegetation succession, which can help to make efficient strategies to mitigate CO2 emissions and enhance carbon sequestration. Full article
(This article belongs to the Special Issue Greenhouse Gas Reduction)
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