评估邻近城市形态对街道温度的影响:利用随机森林和 SHAP 进行多源分析

IF 7.1 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Sijie Zhu , Yu Yan , Bing Zhao , Hui Wang
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引用次数: 0

摘要

城市化极大地改变了土地利用模式,加剧了城市热岛效应等环境挑战,增加了城市公共空间的健康风险。城市街道作为重要的公共空间,由于各种环境因素的影响,夏季经常出现热量积聚现象。现有的研究主要集中在微观范围内的案例研究,对邻近地区的广泛影响尚不清楚。因此,本研究利用多源数据和机器学习技术,研究了中国南京街道相邻缓冲区内的形态特征对街道温度的影响。研究采用随机森林算法,结合夏普利加法解释(SHAP),分析了街道相邻区域形态特征对街道地表温度(LST)的影响。结果表明,街道相邻缓冲区内的绿化、建筑和地表形态特征对调节街道温度至关重要。此外,本研究还通过 K-均值聚类分析解释了影响不同典型街道热环境因素的差异。研究结果为可持续的城市规划策略提供了启示,这些策略旨在缓解极端高温并提高城市步行空间的热舒适度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing the impact of adjacent urban morphology on street temperature: A multisource analysis using random forest and SHAP
Urbanization has significantly transformed land use patterns, intensifying environmental challenges such as the urban heat island (UHI) effect and increasing health risks in urban public spaces. Urban streets, as vital public spaces, frequently experience heat accumulation during summer due to various environmental factors. Existing research has focused primarily on microscale case studies, leaving the broader impact on adjacent areas unclear. Therefore, this study examines the influence of morphology features within street-adjacent buffers on street temperatures in Nanjing, China, utilizing multisource data and machine learning. The random forest algorithm, combined with the Shapley additive explanation (SHAP) interpretation, was applied to analyze the impact of adjacent street morphological features on the land surface temperature (LST) of streets. The results suggest that greenery, buildings, and surface morphology features within street-adjacent buffers are crucial in regulating street temperatures. Furthermore, this study explains the variations in the factors influencing the thermal environments of different typical street types via K-means clustering analysis. The findings offer insights for sustainable urban planning strategies aimed at mitigating extreme heat and enhancing thermal comfort in urban pedestrian spaces.
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来源期刊
Building and Environment
Building and Environment 工程技术-工程:环境
CiteScore
12.50
自引率
23.00%
发文量
1130
审稿时长
27 days
期刊介绍: Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.
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