Search Results (379)

Within the context of regional energy governance, land use has emerged as a critical regulatory interface for managing energy demand. Clarifying the land-use–energy nexus is a technical prerequisite for evidence-based and spatially explicit energy planning. This study develops a digital modeling framework that integrates machine learning (Random Forest, achieving R² = 0.95/0.91 for training/testing) and spatial simulation (Patch-generating Land Use Simulation model, with 82.5% accuracy for industrial land) to quantify land-use-driven energy dynamics in Shaanxi Province, China (2005–2030). Key findings reveal: (1) socioeconomic factors dominate land-use expansion, with service industries (14.8–22.4%) and infrastructure (13.5–18.9%) acting as primary drivers, leading to a projected 94.2% growth in urban built-up areas and a tripling of total energy consumption; (2) structural transitions indicate a declining industrial energy share (from 68% to 54%) and reduced coal dependency (from 78% to 62%), though with significant regional disparities; (3) spatial analysis identifies critical energy path-dependency risks in Xi’an City and Yulin City, which are projected to account for 70% of provincial consumption by 2030. These results demonstrate that land-use structure constitutes a direct physical interface linking regional development with energy demand trajectories. The findings underscore the necessity of transitioning from generalized energy policies toward data-driven, land-use-based energy constraints, providing a digital evidentiary base for more precise and stable regional energy governance. Full article

In the context of global energy system transformation and the pursuit of regional sustainability, China’s Air Pollution Control and Prevention Action Plan (APPA) targets both pollution reduction and carbon mitigation, serving as a critical policy instrument for coordinating the energy-economy-environment nexus in the “2+26” cities. This study employs a quasi-natural experiment with a difference-in-difference (DID) method to assess the synergistic impact of this energy-related policy on these cities. Results show that APPA significantly reduces PM2.5 and carbon emissions by 5.56% and 9.89%, respectively, demonstrating a successful alignment of short-term environmental targets with long-term decarbonization goals. Heterogeneity analysis reveals that large cities with higher institutional capacity are more effective in reducing both pollutants, while resource-based cities achieve more PM2.5 reduction, and non-resource-based cities excel in low-carbon energy transition. Mechanism analysis indicates that APPA promotes these outcomes by optimizing the energy-intensive industrial structure and fostering green technological innovation. This study highlights the effectiveness of integrated governance frameworks in enhancing air quality and reducing carbon emissions, providing crucial insights for redesigning sustainable energy policies and managing the socio-economic disruptions of just transitions in rapidly developing regions. Full article

To address global climate challenges, China’s transition toward a green, low-carbon economy underscores the critical role of green finance (GF) as a key policy instrument. Against this backdrop, clarifying how GF influences green technology innovation (GTI) has become an urgent research priority. Using panel data from 283 Chinese cities (2012–2023), this study estimates a panel threshold model to examine the non-linear relationship between GF and GTI, with environmental regulation (ER) as the threshold variable. The results, validated by robustness and endogeneity tests, reveal the following: (1) GF exerts a double-threshold effect on GTI, with its promoting effect strengthening between thresholds but weakening beyond the second threshold. (2) ER exhibits a significant single-threshold effect; beyond it, GF’s contribution to GTI is substantially enhanced. (3) Three types of heterogeneity analysis are performed based on geographical regions, historical endowments, and whether a city is classified as an innovation-driven city. Overall, the results indicate that the threshold effects are more pronounced in eastern regions, cities with stronger historical endowments, and innovation-driven cities. These findings not only deepen the theoretical understanding of the GF–ER–GTI nexus but also provide empirically grounded insights for designing differentiated GF policies and region-specific environmental regulation strategies, thereby supporting both China’s low-carbon transition and global climate governance efforts. Full article

Balancing ecological conservation with agricultural production in protected areas remains a critical challenge, particularly regarding the nexus of food, water, land, and ecosystems (FWLE). Yet, the spatiotemporal trade-offs, synergies, and underlying drivers within the FWLE remain poorly understood. Focusing on the Henan Funiu Mountain National Nature Reserve (HFMNNR), we quantified water yield (WY), habitat quality (HQ), and food production (FP) using the InVEST model and statistical yearbook data. The XGBoost-SHAP framework was applied to dissect the key drivers and mechanisms governing the FWLE system. Results indicate a significant increasing trend in FP (2000–2020), contrasting with the unimodal (increase-then-decline) trajectories of HQ and WY. Pronounced trade-offs were identified between HQ and WY, and between HQ and FP. Topographic and vegetative factors predominated in shaping the spatial patterns of HQ and FP, whereas climatic factors dictated WY distribution. Specifically, HQ declined when NDVI fell below 0.87, population density surpassed 0.01, or slope was gentler than 7°. WY was constrained when precipitation dropped below 947 mm, actual evapotranspiration exceeded 752 mm, or temperature ranged between 12.5–16.2 °C. FP was suppressed under conditions of slopes > 7°, NDVI within 0–0.61 or 0.61–0.86, or DEM > 373 m. These findings underscore the necessity of spatially explicit management strategies grounded in spatial heterogeneity. We advocate for a multi-objective governance framework centered on HQ to harmonize production and ecological functions. Our findings provide critical insights for formulating policies aimed at sustainably managing protected areas facing similar ecological-production conflicts. Full article

This study investigates the moderating role of government effectiveness in the relationship between urbanization, renewable energy adoption, and environmental efficiency in South Asia over the period 1996–2023. Using a dynamic panel life-cycle framework and advanced long-run estimators (FMOLS, DOLS, CCR) complemented by robust corrections for cross-sectional dependence and heteroskedasticity, the analysis reveals that economic growth and trade expansion increase environmental pressures, while renewable energy deployment, industrial modernization, and effective governance significantly reduce CO₂ emissions. Notably, the interaction between renewable energy and government effectiveness demonstrates that institutional quality amplifies the mitigation impact of clean energy policies. These findings highlight that environmental outcomes are structurally and institutionally conditioned, emphasizing the importance of governance-contingent strategies for achieving sustainable urbanization and low-carbon development. The study contributes to the literature by integrating governance as a moderating mechanism in the urbanization–environment nexus and providing policy-relevant evidence for sustainability interventions in the region. Full article

The complexity of the Water–Energy–Food (WEF) Nexus demands a comprehensive framework for its implementation, particularly concerning place-based governance and sustainable transitions. In this work, the WEF Nexus is conceptualized through the lens of Socio-Technical Systems Transition Theory and its interconnections with geo-ecological system components, enabling its recognition as a place-based Socio-Technical–Ecological meta-System (STES). The UN Sustainable Development Goals (SDGs) are introduced as landscape drivers of the WEF Nexus, as they acknowledge the crucial role of society, technology and ecological systems in its interconnected domains. A novel integrated methodology to develop the WEF Nexus as a STES transition is presented, encompassing literature review, qualitative analysis, conceptual mapping, and multi-stakeholder co-creation. This theoretical framework was empirically tested and improved across selected case studies on hydrological basins in Africa within the ONEPlanET Horizon Europe Project. Both leverageable subsystems and promising transitional innovation assets were identified. The transitional X-Curve assisted in the discussion in the empirical context of ONEPlanET to generalise the findings and the visual presentation of the identified pathways. The methodology that resulted is suitable for supporting a concrete exploration of systemic mapping, analysis, and planning towards a sustainable WEF Nexus in complex geographies, facilitated through multi-stakeholder engagement and co-creation. Full article

Jordan is among the most water-stressed countries globally, with renewable freshwater availability falling below 100 m³ per capita per year. The Jordan Valley (JV), the country’s primary irrigated agricultural corridor, faces interconnected pressures across water, energy, food, and ecosystem (WEFE) systems under intensifying climatic and demographic stressors. This study evaluates the integrated performance of the WEFE nexus in the Jordan Valley using updated evidence (2018–2023) to quantify cross-sector interactions, performance gaps, and intervention priorities. A mixed-methods empirical assessment integrated quantitative sectoral data on water supply–demand and quality, electricity supply–demand and renewable deployment, agricultural productivity, and ecosystem pressure indicators, complemented by Living Lab–based stakeholder interviews. Sectoral indices were calculated based on supply–demand adequacy and aggregated into an overall WEFE Nexus Index. Results indicate persistent water scarcity, with a domestic supply of 23.48 MCM yr⁻¹ versus demand of 26.00 MCM yr⁻¹ (deficit −2.52 MCM yr⁻¹) and irrigation supply of 206 MCM yr⁻¹ relative to approximately 400 MCM yr⁻¹ demand (deficit −194 MCM yr⁻¹). Water services account for 14% of national electricity consumption, while solar pumping provides approximately 40% of daytime irrigation energy. Agricultural productivity is constrained by salinity and water quality, resulting in yield gaps (e.g., greenhouse vegetables: 4.7 vs. 10.0 t/dunum). Sectoral performance is uneven (Water 0.71; Energy 1.00; Food 0.45; Ecosystem 0.50), yielding an overall WEFE Nexus Index of 0.63 (0.50 after efficiency adjustment). Climate projections indicate continued warming (+1.8 °C) and declining precipitation (−11%) by 2060. Water harvesting, integrated renewable-powered water services, wastewater reuse, salinity management, climate-smart agriculture, and ecosystem restoration are critical to enhancing climate-resilient resource security in the Jordan Valley. The WEFE index developed here offers a tool for integrated planning and underscores that achieving climate-resilient resource security in the Jordan Valley will require strategic, cross-sector interventions and adaptive governance rather than sector-specific fixes. Full article

The Jordan Valley, a critical agro-ecosystem in Jordan, faces escalating challenges from chronic water scarcity compounded by environmental and socio-economic pressures, necessitating a systems perspective to understand cross-sector interactions beyond isolated sectoral issues. This study interprets socio-ecological interactions influencing sustainability outcomes in the region and identifies key feedback loops and adaptive responses under water scarcity through an integrated Socio-Ecological Systems (SES) and Water–Energy–Food–Ecosystems (WEFE) framework. Employing a qualitative document analysis (QDA) design, a purposive collection of peer-reviewed studies and institutional publications (n = 50) published between 2002 and 2025 was assembled and systematically coded using a structured deductive–inductive strategy grounded in SES components and WEFE domain interactions. Results reveal seven interconnected themes: water scarcity as a structural constraint, agricultural intensification and resource pressures, climate change as a stress multiplier, ecosystem degradation and service loss, pollution and environmental quality challenges, socio-economic vulnerability and livelihood constraints, and fragmented governance with coordination gaps. These themes highlight reinforcing loops where scarcity promotes groundwater reliance and non-conventional water use, intensification heightens salinity and contamination risks, climate variability escalates irrigation demands, and ecological degradation diminishes buffering capacity, while socio-economic limitations hinder adaptation and governance fragmentation impairs integrated planning and enforcement. While prior studies have examined water scarcity, agricultural intensification, or climate impacts in isolation, this study advances the literature by synthesizing these dynamics through an integrated SES–WEFE analytical lens, revealing reinforcing system feedbacks and governance constraints that are not visible within single-sector or descriptive syntheses. Full article

Corporate governance reforms in emerging and frontier markets frequently assume that strengthening board oversight, audit committees, and ownership monitoring will improve audit quality and enhance firm value. Yet, in weak institutional environments, these mechanisms often function symbolically rather than substantively. This study rethinks the governance–audit–value nexus by integrating Agency Theory, Institutional Theory, and the concept of symbolic governance to explain why governance may appear structurally robust while failing to constrain managerial discretion. Using panel data from Ghanaian listed firms between 2015 and 2023, the analysis shows that audit committee independence and board independence are negatively associated with both audit quality and firm value, indicating that formal independence without expertise, authority, or enforcement capacity does not translate into meaningful oversight. By contrast, institutional and managerial ownership positively influence both outcomes, suggesting that incentive alignment and informed monitoring can substitute for weak formal governance. Foreign ownership improves firm value but does not consistently enhance audit quality, while macroeconomic conditions such as inflation and GDP growth further shape firm performance. The study advances the literature by reconceptualising governance effectiveness in weak institutional environments, demonstrating that governance mechanisms may exist in form without functioning in substance. The findings underscore the need for governance reforms that prioritise enforcement capacity, board expertise, and audit committee competence rather than structural compliance alone. Full article

The water–energy–carbon (WEC) nexus provides a systems framework for minimizing trade-offs among water security, energy reliability, and carbon mitigation. Within this framework, waste-derived biochar catalysts offer a circular pathway that simultaneously valorizes residues, reduces process energy demand, and supports carbon management through stable carbon storage and catalytic co-benefits. This review consolidates recent advances in biochar-based catalysts engineered from agricultural, industrial, municipal, and sludge-derived wastes, highlighting how feedstock selection and thermochemical processing, namely pyrolysis, hydrothermal carbonization (HTC), and torrefaction, as well as activation and post-modification (heteroatom doping and metal/metal-oxide incorporation) govern structure–property–performance relationships. The synthesized catalysts have been widely applied in water and wastewater treatment, including adsorption–advanced oxidation process (AOP) hybrids, Fenton-like systems, peroxydisulfate/persulfate (PS) and peroxymonosulfate (PMS) activation, photocatalysis, and the removal of emerging contaminants. They have also demonstrated strong potential in energy conversion processes such as the hydrogen evolution reaction (HER), oxygen reduction and evolution reactions (ORR/OER), biomass reforming, and carbon dioxide (CO₂) conversion. In addition, these materials contribute to carbon management through sequestration pathways, avoided emissions, and life cycle assessment (LCA)-based sustainability evaluations. Finally, we propose a WEC-aligned design roadmap integrating techno-economic analysis (TEA), LCA, and scale-up considerations to guide next-generation biochar catalysts toward robust performance in real matrices and deployment-ready systems. Full article

Population aging is widely regarded as a major fiscal risk for European welfare states and a central challenge to long-term fiscal sustainability. The article critically reexamines the deterministic assumption by assessing whether the fiscal implications of demographic aging in the European Union (EU) are mechanically driven or conditioned by policy context and institutional capacity. Using panel data for the EU-27 over the period 2014–2024, the study employs a two-way fixed-effects framework and interaction models to examine the relationship between demographic aging and key fiscal outcomes, including public pension expenditures, total social protection spending, and the general government balance. Furthermore, the analysis examines whether indicators associated with the silver economy, such as employment at older ages and digital inclusion, condition the fiscal effects of aging within countries over time. The results suggest that demographic aging does not exhibit a statistically significant association with pension or social protection expenditures once institutional heterogeneity and common shocks are controlled. In contrast to deterministic expectations, aging is positively associated with general government balance, suggesting the presence of policy-mediated fiscal adjustment dynamics rather than automatic fiscal deterioration. Interaction estimates further indicate that digital inclusion among older cohorts conditions the relationship between demographic aging and fiscal balance, while silver economy indicators do not display robust standalone fiscal effects. These findings should be interpreted as evidence of policy-mediated adjustment dynamics rather than as causal estimates of demographic effects. Building on these findings, the article advances a conceptual interpretation of the aging–fiscal nexus in which demographic pressures interact with institutional adaptation and policy capacity. Fiscal sustainability under demographic aging emerges as a policy-mediated outcome that may reflect broader institutional and governance contexts, rather than demographic structure alone. While governance quality is not directly estimated as an observable variable, the analysis interprets fiscal outcomes within a governance-conditioned institutional framework that emphasizes policy mediation rather than deterministic demographic effects. The findings contribute to ongoing debates on fiscal sustainability in aging societies by demonstrating that fiscal outcomes in the European Union are best understood as institutionally conditioned and policy-mediated rather than mechanically driven by demographic structure alone. Full article

Agrivoltaic systems integrate solar electricity generation with agricultural production on the same land and have emerged as a promising strategy to address land-use conflicts between food and energy systems. This PRISMA-based systematic review synthesizes evidence from 249 peer-reviewed studies published between 2010 and 2025, applying an integrated three-dimensional framework that simultaneously examines technical efficiency, environmental sustainability, and institutional governance. The results show that agrivoltaic systems consistently achieve superior land-use performance, with Land Equivalent Ratio values typically ranging between 1.2 and 1.8, indicating 20–80% greater territorial efficiency than separate agricultural and photovoltaic systems. In water-stressed regions, reported improvements in water-use efficiency commonly reach 15–30%, while life-cycle assessments indicate substantial reductions in greenhouse gas emissions and other environmental impacts. The integrated analysis also reveals important design-dependent trade-offs related to panel density, crop selection, and local agroclimatic conditions. Despite their demonstrated technical and environmental maturity, the large-scale deployment of agrivoltaic systems remains constrained by institutional barriers, including the lack of dedicated regulatory frameworks, fragmented agricultural and energy policies, and the strong geographical concentration of research in the Global North, with limited evidence from Latin America and other regions of the Global South. Overall, the findings indicate that agrivoltaic systems represent a credible component of integrated land-use and energy transition strategies, but their responsible scaling will depend primarily on advances in governance, policy alignment, and context-specific system design. Full article

The convergence of climate change, migration, and health represents a critical global challenge, with the Middle East and North Africa (MENA) region illustrating acute vulnerabilities while offering insight relevant beyond the region. Increasing exposure to extreme heat, droughts, and floods drives displacement, constrained mobility, and adaptive migration, placing additional pressure on already stretched health systems. This paper proposes an integrated Nexus Action Framework for Climate Change, Migration, and Health (NAF-CMH) to address these interlinked dynamics and move beyond fragmented, sector-specific responses. The framework conceptualizes human mobility both as a potential resilience strategy and as a determinant of health, encompassing climate-affected migrants, displaced populations, and those experiencing involuntary immobility across diverse pathways and settings. It promotes systematic integration of health considerations into climate adaptation and migration governance and situates these interventions within the broader agenda of climate-resilient health systems. Drawing on a non-systematic narrative review of peer-reviewed and grey literature, complemented by the authors’ expertise, the paper identifies seven interrelated pillars for coordinated policy and operational action. While grounded in MENA-specific vulnerabilities, the framework is flexible and adaptable to other regions facing climate-driven mobility challenges. By providing an operational architecture for multisector collaboration, the NAF-CMH supports policymakers, public health authorities, and migration actors in strengthening resilience, reducing vulnerability and safeguarding health amid accelerating climate impacts and evolving mobility patterns. Full article

“Sustainable Built Environments at the Climate–Health Nexus” refers to the planning and administration of metropolitan areas that tackle the interconnected problems of public health, climate change, and increasing heat hazards. By highlighting tactics that lessen urban heat islands, increase resilience, and advance equity, it establishes the built environment as a crucial link between environmental stresses and the welfare of multicultural urban communities. With an emphasis on how urban heat increases health risks and how design might act as a mediator between climate pressures and human well-being, this article explores the relationship between climate and health within the sustainable built environment. It criticizes the enduring “delusions of sustainable architecture”, regarded as metric substitution, which overlook fair health results in favour of sustainability being reduced to certification or spectacle. In this paper, “delusions” refer to two recurring patterns: (1) metric substitution, where carbon/energy performance is treated as a proxy for health protection, and (2) spectacle substitution, where iconic projects stand in for systemic heat-risk reduction. Through a critical examination of Singapore’s Gardens by the Bay and Abu Dhabi’s Masdar City, the conversation highlights the benefits and drawbacks of landmark sustainability initiatives. These programs highlight the risks of selected resilience, elitism, and dependence on resource-intensive technologies, even as they show technological creativity in lowering thermal stress and establishing microclimatic comfort. The study makes the case for a shift in the sustainable built environment toward design that is systemic, equitable, and health-centred. Including public health outcomes in sustainability measurements, giving everyday resilience precedence over showcase projects, and including governance, equity, and cultural transformation in planning frameworks are all highlighted in the recommendations. The climate–health nexus is used here as an evaluative lens to test whether sustainable built-environment interventions measurably reduce heat exposure and health risk, particularly for vulnerable groups. In a moment of increasing climatic stress, the conclusion urges shedding illusions and making sustainability a lived condition of justice, dignity, and resilience. Full article

The joint influence of digital adoption in corporate governance and its impact on external assurance is a critical and emerging nexus in the literature concerning auditing and technological innovation, especially in volatile markets. Building on agency theory and resource dependence theory, this study investigates the nexus between corporate digital transformation (DT) and audit quality (AQ), while examining the moderating role of AC characteristics—specifically size, gender diversity, expertise, and activity—within the Egyptian context. Utilizing a sample of 120 non-financial firms listed on the Egyptian Exchange (EGX) from 2022 to 2024 (360 firm-year observations), the analysis employs Robust Least Squares (M-estimation) and Panel EGLS to ensure resilience against outliers and heteroscedasticity. The empirical findings provide robust evidence that digital transformation significantly enhances audit quality by constraining discretionary accruals, supporting the premise that technological integration improves monitoring and transparency. Moreover, the results reveal that the audit committee acts as a pivotal positive moderator, strengthening the digitalization-audit quality relationship; this impact is most pronounced in firms with larger, more gender-diverse, and financially expert audit committees. While audit committee activity shows a reactive correlation with accruals, its interaction remains essential for continuous monitoring in digital environments. Ultimately, this study offers novel insights for regulators and firms in emerging economies, highlighting that the benefits of technological adoption in financial reporting are maximized only when complemented by robust internal governance mechanisms, necessitating simultaneous investment in digital infrastructure and the fortification of audit committee attributes to ensure sustained audit market efficiency. Full article