Scale effect on the relationship between urban landscape patterns and land surface temperature

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

Sustainable Cities and Society Pub Date : 2024-10-28 DOI:10.1016/j.scs.2024.105942

Anqi Zhang , Chang Xia

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Abstract

Great efforts have been made to examine the linkages between land surface temperature (LST) and urban landscape patterns (ULPs), which, however, focus on a single spatial scale and linear relationships. This study aims to examine the influence range of four key ULP indicators on LST, namely the sky view factor (SVF) and three indices of built-up area, greens, and blue spaces. The analyses are conducted at the street block level in 38 big cities in China and leverage a multiscalar approach to investigate change patterns of indicators within multiple buffer zones and identify the buffer distance that yields the greatest influence. Results reveal that (1) the greatest local impacts are produced within 0 − 150 m buffer zones in most cities for all key ULP metrics; (2) the maximum impacts of most indicators in summer are greater than in other seasons; and (3) the influence magnitude of key ULP indicators increases after considering the scale effect, and the influence of SVF varies significantly across cities. Results suggest that the consideration of maximum influence ranges of ULP indicators can better explain LST spatial variations. Our findings offer evidence on the local impact of ULPs on LST and contribute to urban design in urban heat mitigation.

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城市景观模式与地表温度之间关系的规模效应

人们在研究地表温度（LST）与城市景观格局（ULPs）之间的联系方面做了大量工作，但这些工作主要集中在单一的空间尺度和线性关系上。本研究旨在考察四个主要城市景观格局指标对地表温度的影响范围，即天空视线系数（SVF）以及建筑面积、绿地和蓝地三个指数。研究在中国38个大城市的街区层面进行分析，采用多尺度方法研究多个缓冲区内指标的变化规律，并确定影响最大的缓冲距离。结果表明：（1）在大多数城市中，所有关键ULP指标在0-150米缓冲区内产生的局部影响最大；（2）大多数指标在夏季的最大影响大于其他季节；（3）考虑尺度效应后，关键ULP指标的影响幅度增大，SVF的影响在不同城市之间存在显著差异。结果表明，考虑ULP指标的最大影响范围可以更好地解释LST的空间变化。我们的研究结果为ULP对LST的局部影响提供了证据，有助于城市热量减缓的城市设计。

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;