Impact of vegetation coverage and configuration on urban temperatures:a comparative study of 31 provincial capital cities in China  

作　　者：Chengcong Wang Zhibin Ren Peng Zhang Yujie Guo Shengyang Hong Wenhai Hong Xinyu Wang Ruoxuan Geng Fanyue Meng 

机构地区：[1]Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,People’s Republic of China [2]Key Laboratory of Tropical Island Land Surface Processes and Environmental Changes of Hainan Province,Haikou 571158,People’s Republic of China [3]University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China

出　　处：《Journal of Forestry Research》2025年第1期163-177,共15页林业研究(英文版)

基　　金：supported by the National Natural Science Foundation of China(42171109,32130068);the Youth Innovation Promotion Association of Chinese Academy of Sciences(2020237);National Key R&D Program of China(2023YFF1304604).

摘　　要：Urban vegetation plays a crucial role in regulating temperatures and heat waves in urban areas.However,the influence of vegetation coverage and its configuration on surface temperatures in different climate zones at a national scale is unclear.To address this,we utilized high-resolution data to detect spatial patterns for 31 provincial capital cities in China.We integrated day and night surface temperatures to determine the influence of vegetative coverage and configuration on urban temperatures across different climate zones and city sizes.Our study revealed that a subtropical monsoon climate and medium-sized cities had the highest vegetative coverage and shape complexity.The best connectivity and agglomeration of vegetation were found in a temperate monsoon climate and large cities.In contrast,small cities,especially those under a temperate continental climate,had low vegetation coverage,high fragmentation,and weak agglomeration and connectivity.In addition,vegetative coverage had a negative impact on daytime surface temperatures,especially in large cities in a subtropical monsoon climate.However,an increase in vegetation coverage could result in warming at night in small cities in temperate continental climates.Although urban vegetation configuration also contributed to moderating surface temperatures,especially at night,they did not surpass the influence of vegetation coverage.The effect on nighttime temperatures of the configuration of vegetation increased by 3–6%relative to that of daytime temperatures,especially in large cities in a temperate monsoon climate.The contribution vegetation coverage and configuration interaction to cooling efficiency decreased at night,especially in medium-sized cities in a temperate continental climate by 3–5%.In addition,this study identified several moderating effects of natural and social factors on the relationship between urban vegetation coverage and surface temperatures.High duration of sunshine,low humidity and high wind speed significantly enhanced the negative im

关 键 词：Daytime and nighttime urban temperatures Landscape patterns Moderating effect Urban vegetation coverage 

分 类 号：X16[环境科学与工程—环境科学] S688[农业科学—观赏园艺]