The mitigating effect of green Space's spatial and temporal patterns on the urban heat island in the context of urban densification: A case study of Xi'an

IF 10.5 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Sustainable Cities and Society Pub Date : 2024-11-12 DOI:10.1016/j.scs.2024.105974

Zhaowen Xu , Jin Rui

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引用次数: 0

Abstract

Growing evidence highlights a strong link between urban densification and urban heat island (UHI) effects. However, there is a lack of research on time-based analyses of urban green space spatial patterns using urban densification indices to mitigate UHI effects. Addressing this gap, this study focuses on the central district of Xi'an, utilizing urban density data, MODIS LST products, and Landsat series imagery. The Coordination Coupling Degree Model (CCDM) is applied to longitudinally assess the mitigating effects of urban green space spatial patterns on UHI under different scales of spatial densification. The CCDM results show a significant overall improvement in the coordination coupling degree between green space spatial indices and LST in Xi'an's central district from 2013 to 2023. However, variations across administrative districts suggest that regional planning policies have differentially influenced green space patterns and UHI effects over time. Furthermore, a global negative correlation between the urban densification index and changes in the coordination coupling degree indicates that continued urbanization in Xi'an's central district could exacerbate the urban thermal environment. This study provides valuable insights into green space planning and UHI mitigation strategies in the context of urban densification.

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城市密集化背景下绿色空间的时空格局对城市热岛的缓解作用：西安案例研究

越来越多的证据表明，城市密集化与城市热岛效应之间存在密切联系。然而，利用城市密度指数对城市绿地空间模式进行基于时间的分析以缓解 UHI 效应的研究却十分缺乏。针对这一空白，本研究利用城市密度数据、MODIS LST 产品和 Landsat 系列图像，以西安市中心区为研究对象。应用协调耦合度模型（CCDM）纵向评估了不同空间密度尺度下城市绿地空间格局对 UHI 的减缓效应。CCDM结果表明，从2013年到2023年，西安市中心区绿地空间指数与LST之间的协调耦合度总体上有显著提高。然而，不同行政区之间的差异表明，区域规划政策随着时间的推移对绿地格局和 UHI 效应产生了不同程度的影响。此外，城市密度指数与协调耦合度变化之间的整体负相关关系表明，西安市中心区的持续城市化可能会加剧城市热环境。这项研究为城市高密度化背景下的绿地规划和减缓 UHI 战略提供了宝贵的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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;