Impacts of urban block form on carbon and pollutant emissions from urban life in China from the perspective of regional differences

IF 10.5 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Sustainable Cities and Society Pub Date : 2024-10-05 DOI:10.1016/j.scs.2024.105849
Wei Wang , Wenshan Su
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Abstract

Air pollution emissions (PE) and carbon emissions (CE) pose significant challenges to achieving the Sustainable Development Goals (SDGs) globally. The intensity of urban block development and spatial form can influence the relationship between PE and CE. This study analyzed 11,228 neighborhood samples from various climate zones across China using spatial statistics and an optimized random forest model to examine the impact of block spatial form on PE and CE. The findings reveal that: (1) The PE–CE correlation in non-first-tier city blocks in southern China is stronger than in those in northern China. The correlation is strongest in urban neighborhoods located in temperate climates. Additionally, the PE–CE correlation is weakest in Beijing and Shanghai. (2) The variation in explanatory power of different driving factors is more pronounced for CE than for PE, with PR, NDVI, and AH emerging as the most significant factors. (3) The synergy between PE and CE is strongest when BD is in the 20 %-30 % range. Similarly, the synergy is strongest when PR is in the 2–3 range. (4) BD in the 40 %-60 % range is most effective in reducing PE and CE, with 40 %-50 % range favoring CE reduction and 50 %-60 % range favoring PE reduction.
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从地区差异看城市街区形态对中国城市生活碳排放和污染物排放的影响
空气污染排放(PE)和碳排放(CE)对全球实现可持续发展目标(SDGs)构成重大挑战。城市街区的开发强度和空间形态会影响 PE 和 CE 之间的关系。本研究利用空间统计和优化的随机森林模型,分析了来自中国不同气候区的 11,228 个街区样本,研究了街区空间形态对 PE 和 CE 的影响。研究结果表明(1) 中国南方非一线城市街区的 PE-CE 相关性强于北方。位于温带气候的城市街区的相关性最强。此外,北京和上海的 PE-CE 相关性最弱。(2)与 PE 相比,不同驱动因素对 CE 的解释力差异更为明显,其中 PR、NDVI 和 AH 是最重要的因素。(3) 当 BD 在 20%-30% 范围内时,PE 和 CE 的协同作用最强。同样,当 PR 在 2-3% 范围内时,协同作用最强。(4)BD 在 40%-60% 范围内对减少 PE 和 CE 最有效,40%-50% 范围内有利于减少 CE,50%-60% 范围内有利于减少 PE。
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来源期刊
Sustainable Cities and Society
Sustainable Cities and Society Social Sciences-Geography, Planning and Development
CiteScore
22.00
自引率
13.70%
发文量
810
审稿时长
27 days
期刊介绍: Sustainable Cities and Society (SCS) is an international journal that focuses on fundamental and applied research to promote environmentally sustainable and socially resilient cities. The journal welcomes cross-cutting, multi-disciplinary research in various areas, including: 1. Smart cities and resilient environments; 2. Alternative/clean energy sources, energy distribution, distributed energy generation, and energy demand reduction/management; 3. Monitoring and improving air quality in built environment and cities (e.g., healthy built environment and air quality management); 4. Energy efficient, low/zero carbon, and green buildings/communities; 5. Climate change mitigation and adaptation in urban environments; 6. Green infrastructure and BMPs; 7. Environmental Footprint accounting and management; 8. Urban agriculture and forestry; 9. ICT, smart grid and intelligent infrastructure; 10. Urban design/planning, regulations, legislation, certification, economics, and policy; 11. Social aspects, impacts and resiliency of cities; 12. Behavior monitoring, analysis and change within urban communities; 13. Health monitoring and improvement; 14. Nexus issues related to sustainable cities and societies; 15. Smart city governance; 16. Decision Support Systems for trade-off and uncertainty analysis for improved management of cities and society; 17. Big data, machine learning, and artificial intelligence applications and case studies; 18. Critical infrastructure protection, including security, privacy, forensics, and reliability issues of cyber-physical systems. 19. Water footprint reduction and urban water distribution, harvesting, treatment, reuse and management; 20. Waste reduction and recycling; 21. Wastewater collection, treatment and recycling; 22. Smart, clean and healthy transportation systems and infrastructure;
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