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Open research questions in Environmental Impact and Sustainability

29 unresolved questions extracted from the limitations and future-work sections of 640 Environmental Impact and Sustainability papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Given that urban carbon management is inherently socio-technical, future research should explore how DCM interfaces with governance structures, policy instruments, and stakeholder decision-making processes, particularly in diverse regulatory and cultural contexts. Second, future studies may explore the integration of DCM with urban simulation tools, digital twins, GIS-based carbon mapping, and dynamic monitoring systems to improve operational applicability. Finally, future research may investigate how DCM can be incorporated into urban climate governance, carbon-neutrality planning, and adaptive policy frameworks under different socio-economic and climatic conditions. Integrating these co-benefits into dynamic carbon management frameworks remains an open research avenue that could further strengthen the relevance of DCM for holistic urban sustainability planning. While the framework is grounded in extensive literature synthesis and analytical reasoning, it has not yet been tested through real-world case studies, simulations, or quantitative modelling.

    Towards Dynamic Carbon Management: A Structured Analytical Review and Multi-Scale Framework for Urban Carbon Accounting · 2026 · DOI

  • If, however, socio-economic emission-driving factors are added to the initial allocation using regression-based weighting, the allocation is much more balanced, and the room for the adjustments by ZSG-DEA is limited to a very narrow band.

    Regression-based ZSG-DEA analysis of carbon allowance allocation for urban buildings in Guangxi · 2026 · DOI

  • While the cap-and-trade carbon emissions trading system (ETS) is designed primarily to mitigate climate change through carbon pricing, its potential to affect the generation of industrial solid waste – a pervasive environmental pollutant and an important source of greenhouse gas emissions – remains a critical yet under-explored empirical question.

    China’s carbon emissions trading system (ETS) helps the country slow down industrial solid waste accumulation · 2026 · DOI

  • Future research should consider (3) This paper uses the QAP regression model to analyze the factors influencing the spatial correlation network of carbon emissions in the construction industry, predominantly focusing on the individual effects of each factor while insufficiently exploring their interactive relationships.

    Evolution of carbon emissions in China’s construction industry and its influencing factors from a spatiotemporal perspective under the background of dual carbon goals · 2026 · DOI

  • Several limitations should be taken into account when interpreting the results. First, the analysis covers a relatively short period around the start of the CBAM reporting phase and focuses on one sector in one exporting country. The estimates therefore, speak to early short-term adjustments in Indian steel exports during the transitional reporting period, rather than to the long-term general equilibrium impact of the fully operational CBAM or to effects in other sectors and countries. Second, although the bilateral EU analysis is complemented with a specification that compares exports to EU and non-EU destinations, this is not a full treatment of trade diversion or global reshuffling. A comprehensive assessment of trade diversion would require a destination-level framework (for example, a gravity-style model across partner countries and sectors) and a longer post-policy time series. Our results should therefore be viewed as providing early evidence on relative adjustments in EU-bound exports, not a complete picture of global reallocation patterns. Third, the study uses emissions estimates from Climate TRACE, which combines satellite imagery and remote sensing to produce facility-level data. Although this dataset offers unique scale and transparency, it also has limitations, including potential imaging distortions, model-based estimation error and the lack of systematic ground-based verification. Given these factors, the findings should be interpreted as indicative of relative emissions intensity across firms, rather than as precise measures of the CBAM liability at the installation level. Fourth, the Panjiva shipment data requires non-trivial filtering. All analyses are based on items reported in metric tonnes, which may lead to the exclusion of some observations during the filtering process. Items classified by numbers or pieces involve complex conversions that are not modelled here.

    Early signs that the EU carbon border adjustment mechanism is reshaping EU–India steel trade · 2026 · DOI

  • Additionally, future studies should consider integrating production-based and consumption-based accounting frameworks to explore the coupling mechanisms among capital flows, demographic structures, and carbon responsibilities, thereby providing a more comprehensive foundation for equitable and effective low-carbon governance in the Yellow River Basin. Future research should focus on advancing frontier directions such as the construction of dynamic carbon sink models, full-scope greenhouse gas inventories, and cross-basin comparative analysis, in order to continuously deepen the scientific understanding and policy support for carbon sustainable development in the Yellow River Basin.

    Evaluation of carbon sustainable development in the nine provinces and regions of the Yellow River Basin based on carbon ecological footprints · 2026 · DOI

  • CO2 emissions cannot be fully stopped in the baseline scenario as Pakistan is an emerging country that relies heavily on fossil fuels, indicating limitations in achieving zero emissions in near-term projections.

    Low-carbon electricity generation through demand and carbon neutrality prediction 2035 of a transitional economy: decomposition and LEAP learning approaches · 2026 · DOI

  • However, whether the effect of biochar application on emission intensity (EI) of non‐CO 2 greenhouse gas emissions (including methane (CH 4 ) and nitrous oxide (N 2 O)), per unit of crop caloric content, varies for different crops and its driving mechanism remains unclear.

    The Effect of Cereal Crop Type on Reducing Emission Intensity With Biochar Application in Monsoon Asia · 2025 · DOI

  • Problem: Suburban areas have an important role to play in reducing greenhouse gas (GHG) emissions, yet little is known about the magnitude of reductions that can be expected or which strategies are most promising.

    Carbon Neutrality at the Local Level: Achievable Goal or Fantasy? · 2008 · DOI

  • Validation of Core Research Propositions: The study was guided by three implicit propositions derived from gaps in the literature: 1) Urban carbon research is dominated by static accounting approaches rather than dynamic management logics.

    Towards Dynamic Carbon Management: A Structured Analytical Review and Multi-Scale Framework for Urban Carbon Accounting · 2026 · DOI

  • However, relatively limited research has been conducted on cross-regional and cross-sectoral carbon emissions associated with the construction industry.

    Influencing factors of carbon emissions in the construction industry from the perspective of industrial chain: empirical case of Tianjin · 2026 · DOI

  • However, it identifies four major limitations: a lack of uncertainty analysis in assessment methods, insufficient research on the coupling mechanism of low-carbon design elements, absence of dynamic optimization for the entire lifecycle and weak adaptability of emerging technologies.

    Carbon emission management in design-oriented tunnel engineering: current status and emerging trends · 2026 · DOI

  • The implication is that circular-economy and decarbonization policies share an important structural interface that future research should explore more systematically.

    Can Zero-Waste City construction enhance urban ecological resilience? Evidence from a quasi-natural experiment of China’s pilot policy · 2026 · DOI

  • Future research could focus on acquiring more granular, enterprise-level energy consumption data to overcome current statistical limitations and to further investigate holistic, sector-specific decarbonization pathways.

    Understanding the drivers of regional greenhouse gas emissions: a case study of Tatarstan · 2026 · DOI

  • Energy models need to incorporate extrinsic inputs including population, income, and growth factors to better support monitoring energy indicators and evaluating progress on SDGs.

    Low-carbon electricity generation through demand and carbon neutrality prediction 2035 of a transitional economy: decomposition and LEAP learning approaches · 2026 · DOI

  • This study investigates geopolitical, socioeconomic, and regulatory considerations that can influence Europe's bioenergy imports but that are so far underexplored.

    The implications of geopolitical, socioeconomic, and regulatory constraints on European bioenergy imports and associated greenhouse gas emissions to 2050 · 2022 · DOI

  • The article points out that reducing low emissions from boilers in private houses, due to its significant share in air pollution and the fact that this is an underreported problem, could bring a significant positive ecological effect.

    Outline of Ecological and Economic ProblemsAssociated with Low Emission Reductionsin Poland’s Lubuskie Voivodeship · 2018 · DOI

  • The underlying considerations and constraints are analyzed as followed to set the basis for further research into the regulatory design of an emissions trading program in China.

    Designing the Regulatory Framework of an Emissions Trading Programme in China: Lessons from Tianjin · 2013 · DOI

  • Identifying and measuring low carbon activities at the local authority level faces a number of problems related to the proliferation of overlapping low carbon concepts, a lack of data related to meaningful low carbon sectors and the rapidly changing nature of the sector.

    Measuring the low carbon economy at the local level: A hybrid approach · 2013 · DOI

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29 open questions have been extracted from the limitations and future-work passages of 640 Environmental Impact and Sustainability papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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