城市土地利用变化对热岛效应的影响研究——以南京市为例  

The impact of urban land use changes on the urban heat island effect:a case study of Nanjing

作　　者：陈品昊 钟凯文 CHEN Pinhao;ZHONG Kaiwen(Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Science,Beijing 100049,China;Guangdong Academy of Sciences,Guangzhou Institute of Geography,Guangzhou 510070,China)

机构地区：[1]中国科学院广州地球化学研究所,广州510640 [2]中国科学院大学,北京101400 [3]广东省科学院广州地理研究所,广州510070

出　　处：《测绘科学》2024年第7期173-183,共11页Science of Surveying and Mapping

基　　金：广州市水务科技协同创新中心项目;2019年广东省省级农业科技创新及推广项目(2019KJ147)。

摘　　要：针对土地利用对热岛效应影响的复杂性问题,以南京市主城区为研究区,利用Landsat 8可见光和近红外数据提取土地利用类型,并采用其热红外数据反演地表温度,通过缓冲区分析法探究土地利用与热岛的空间分布与变化趋势,利用地理探测器量化土地利用对城市热岛效应的影响。结果如下:①长江以南热岛强度较大,交通枢纽及其周围工业园区热岛效应显著;2014—2022年,热岛向城市边缘地区转移扩散;②2014—2022年,不透水面和林地增幅为6.1%和3.0%,水体和耕地-草地减幅为0.2%和9.0%,不透水面扩张主要侵占耕地-草地;③土地利用交互作用对热岛效应的驱动力大于单一类型,不透水面对热岛效应的影响最显著。研究结果可为南京市建设“美丽古都”提供土地利用规划方面的辅助信息。Given the complexity of the impact of land use on the urban heat island effect,taking the main urban area of Nanjing as the study area,using Landsat 8 visible and near-infrared data to extract land use types and retrieve land surface temperatures from thermal infrared data.Buffer zone analysis was employed to investigate the spatial distribution and trends of land use and urban heat island effect.The Geodetector was used to quantify the influence of land use on the urban heat island effect.The results are as follows:①heat island intensity is greater south of the Yangtze River,with significant effects around transportation hubs and industrial parks.From 2014 to 2022,the heat island shifted and expanded towards the urban fringe.②From 2014 to 2022,the increase of impervious surface and forests in the study area is 6.1%and 3.0%,while water bodies and cropland-grasslands decreased by 0.2%and 9.0%.The expansion of impervious surfaces mainly encroached on arable cropland-grasslands.③The interaction of land use types had a greater driving force on the urban heat island effect than any single type,with impervious surfaces having the most significant impact.These findings can provide auxiliary information for land use planning in the construction of Nanjing as a‘Beautiful Ancient Capital'.

关 键 词：城市热岛效应 土地利用 地理探测器 地表温度 

分 类 号：P237[天文地球—摄影测量与遥感]