摘要
蓝绿空间对于缓解城市热环境至关重要,本研究以位于长三角地区的合肥、南京、杭州、上海为对象,结合地理探测器与随机森林算法,分析其冷岛效应的驱动因素及交互作用。合肥冷岛区集中于巢湖;南京位于外围;上海在黄浦江以东连续分布;杭州集中在钱塘江、西湖及郊区。各城市驱动因素的重要性不同,建筑容积率和林地斑块密度为主要驱动因素,河流与林地斑块密度的交互作用最强。街道尺度分析显示,蓝绿空间配置显著影响冷岛区特征。期望本研究可以为缓解城市热岛效应提供科学依据。
Blue-green spaces play a critical role in mitigating urban heat environments.This study examines Hefei,Nanjing,Hangzhou,and Shanghai in the Yangtze River Delta region,employing the geographic detector and random forest model to analyze the driving factors and interactions contributing to their cold island effects.In Hefei,cold island areas are mainly situated around Chaohu Lake;in Nanjing,they are located on the outskirts;in Shanghai,they are continuously distributed east of the Huangpu River;and in Hangzhou,they are concentrated along the Qiantang River,West Lake,and suburban areas.The importance of contributing factors differs among cities,with building plot ratio and forest patch density identified as the primary drivers,and the interaction between rivers and forest patch density exerting the strongest influence.Street-scale analysis indicates that the configuration of blue-green spaces significantly affects the characteristics of cold island areas.This study aims to provide scientific evidence for strategies to mitigate urban heat island effects.
出处
《建筑与文化》
2025年第5期172-175,共4页
Architecture & Culture
关键词
蓝绿空间
冷岛强度
地理探测器
随机森林算法
blue-green spaces
cold island intensity
geographic detector
random forest model
作者简介
王伟武,浙江大学建筑工程学院副教授,博士;崔毅,浙江大学建筑工程学院硕士;何杰,浙江大学建筑工程学院博士;金雨萍,浙江大学建筑工程学院硕士;周梓怡,浙江大学建筑工程学院硕士。
