Impact of urban green space morphology and vegetation composition on seasonal land surface temperature: a case study of Beijing's urban core

IF 6 2区工程技术 Q1 ENVIRONMENTAL SCIENCES

Urban Climate Pub Date : 2025-03-01 DOI:10.1016/j.uclim.2025.102367

Xiaoting Sun , Panfei Fang , Shaodong Huang , Yuying Liang , Jia Zhang , Jia Wang

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引用次数: 0

Abstract

Urban green spaces play a crucial role in mitigating the Urban Heat Island (UHI) effect by cooling surface temperatures. This study used Landsat 8 data and urban green space surveys, applying Radiative Transfer Equation (RTE) and Boosted Regression Tree (BRT) models to analyze how green space morphology and vegetation composition influence land surface temperature (LST) across seasons. Results show that the percentage of green space area (PLAND) has the greatest impact on LST year-round. In summer and winter, additional morphological factors, such as Largest Patch Index (LPI), Mean Patch Size (MPS), and Edge Density (ED), also play important roles. A cooling effect is observed when PLAND exceeds thresholds of 34.5 % in spring, 44.5 % in summer, 39.6 % in autumn, and 37.4 % in winter, though the effect diminishes with further increases. Trees provide the highest contribution to LST reduction in all seasons, with particularly strong effects in summer (66.8 %) and autumn (65.7 %). Optimizing urban green space design through strategic planning and a balance of vegetation types can significantly enhance temperature regulation, reduce UHI effects, and improve urban ecological quality.

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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[...]