成都市城市湿地公园热环境与避暑潜力评估  

Assessing the heat environment and potential heat-avoidance ability of the urban wetland parks in Chengdu City

作　　者：邓越 蒋卫国 凌子燕 贾凯 李丽 Deng Yue;Jiang Weiguo;Ling Ziyan;Jia Kai;Li Li(School of Architecture and Civil Engineering,Chengdu University,Chengdu 610106,Sichuan,China;Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China;School of Geography and Planning,Nanning Normal University,Nanning 530001,Guangxi,China;Guangzhou Institute of Geography,Guangdong Academy of Sciences,Guangzhou 510070,Guangdong,China)

机构地区：[1]成都大学建筑与土木工程学院,四川成都610106 [2]北京师范大学地理科学学部,北京100875 [3]南宁师范大学地理科学与规划学院,广西南宁530001 [4]广东省科学院广州地理研究所,广东广州510070

出　　处：《地理科学》2025年第2期403-414,共12页Scientia Geographica Sinica

基　　金：国家自然科学基金项目(42301400,42071393)资助。

摘　　要：城市湿地公园是成都市面向公园城市示范区建设的重要基础设施,在缓解城市高温、服务公众避暑等方面具有重要作用。本研究借助GEE平台、Landsat数据和经验统计单窗算法评估了成都市42个城市湿地公园夏季地表温度,研究了公园内部水体、植被景观和公园外部景观同公园内部地表温度的关系,最后从可达性、可容纳游客量、降温效应3个方面构建避暑潜力指数,评估城市湿地公园的避暑潜力。结果表明:(1)三环线至绕城高速内的城市湿地公园平均地表温度最高,为33.45℃,第二绕城高速外的城市湿地公园平均地表温度最低,为30.81℃,两者相差2.64℃。(2)公园外部热环境对公园内部地表温度具有正向影响,而公园内部水体占比和植被茂密程度对公园内部地表温度具有负向影响。(3)避暑潜力最高的5个城市湿地公园分别是青龙湖湿地公园、东安湖公园、人民公园、望江楼公园和兴隆湖湿地公园,避暑潜力最低的5个城市湿地公园分别是光华公园、大源中央公园、创智公园、交子公园和新川之心公园。研究建议城市湿地公园水体可分散布局、植被应尽可能茂密、聚集布局,以实现城市湿地公园避暑潜力提升。Urban wetland parks are essential infrastructures of Chengdu’s efforts to construct a blue-green park system and to facilitate the development of park city demonstration zone.They play a crucial role in alleviating urban heat and providing cooling services to the public during summer.This study initially utilized the GEE platform,Landsat data,and an empirical statistical single-window algorithm to evaluate the summer land surface temperature(LST)of 42 urban wetland parks in Chengdu.Subsequently,the study investigated the relationship between water body,vegetation landscapes within the parks,landscape indicators outside the parks,and the land surface temperature within the parks.Finally,a potential heat-avoidance index for urban wetland parks was constructed from 3 aspects:park accessibility,park capacity,and park thermal cooling effect,to assess potential ability of an urban wetland park in heat alleviation.The results indicate:1)The average land surface temperature of urban wetland parks within the Chengdu No.3 Ring Road to the Chengdu Ring Expressway is the highest,at 33.45℃,while those outside the Chengdu No.2 Ring Expressway have the lowest average land surface temperature,at 30.81℃,showing a difference of 2.64℃.2)External heat environments have a positive impact on the land surface temperature within the parks,while the proportion of water bodies and the density of vegetation negatively affect the land surface temperature within the parks.3)The top 5 urban wetland parks with the highest potential heat avoidance index are the Qinglong Lake Wetland Park,the Dong’an Lake Park,the People’s Park,the Wangjianglou Park,and the Xinglong Lake Wetland Park,while the bottom 5 urban wetland parks with the lowest heat avoidance potential are the Guanghua Park,the Dayuan Central Park,the Chuangzhi Park,the Jiaozi Park,and the Xinchuanzhixin Park.The study suggests that water bodies in urban wetland parks should be dispersedly distributed,and vegetation should be more densely and concentratedly distributed to e

关 键 词：城市湿地公园 热环境 避暑潜力 遥感 成都市 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]