How landscape characteristics impact land surface temperature in the context of urban spatial heterogeneity: A case study from Beijing, China

IF 6 2区工程技术 Q1 ENVIRONMENTAL SCIENCES

Urban Climate Pub Date : 2025-03-01 DOI:10.1016/j.uclim.2025.102366

Wei Chen , Jianjun Zhang , Chenyan Huang , Shu Fu

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Abstract

Research on the influence of landscape characteristics on land surface temperature (LST) at the block scale remained relatively limited, particularly in contexts where urban structures exhibited spatial heterogeneity. This study categorized urban spaces of Beijing, China, by using the Self-Organizing Feature Map (SOFM) network model and analyzed the impact of landscape characteristics on LST. Results showed a maximum mean LST difference of 4.23 °C between urban spaces. Patch density (PD), aggregation index (AI), and urban porosity (Por) had a significant impact on LST in any urban space, whereas the influences of other landscape pattern indices were comparatively weaker. The influence of landscape pattern indices on LST was constrained by urban spaces, which indicating an overall trend of “urban bare spaces” > “urban park spaces” > “urban building spaces”. The sensitivity of LST to landscape pattern index was higher in residential building and administrative office building space. A notable positive spatial autocorrelation of LST, with the urban space of commercial buildings exhibiting a stronger prevalence of high-high (HH) clustering characteristics. These results can help urban planner to be utilized to reduce urban heat by adjusting the distribution of urban spaces and the landscape characteristics.

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城市空间异质性背景下景观特征对地表温度的影响：以北京为例

在地块尺度上，景观特征对地表温度影响的研究相对有限，特别是在城市结构具有空间异质性的背景下。采用自组织特征图（SOFM）网络模型对北京城市空间进行分类，分析景观特征对地表温度的影响。结果表明，城市空间间最大平均地表温度差异为4.23°C。斑块密度（Patch density， PD）、聚集指数（aggregation index， AI）和城市孔隙度（urban孔隙度，Por）对城市地表温度均有显著影响，而其他景观格局指数的影响相对较弱。景观格局指数对地表温度的影响受城市空间的制约，总体呈现“城市裸地”趋势；“城市公园空间”>；“城市建筑空间”。在住宅和行政办公空间，地表温度对景观格局指数的敏感性较高。地表温度具有显著的空间正相关，其中城市商业建筑空间表现出更强的高-高（HH）聚类特征。这些结果可以帮助城市规划者通过调整城市空间分布和景观特征来减少城市热量。

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来源期刊

Urban Climate Social Sciences-Urban Studies

CiteScore

9.70

自引率

9.40%

发文量

286

期刊介绍： Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]