The variation of buffer performance of water bodies on urban heat island along riverbank distance

Urban water bodies include natural water bodies and artificial water bodies in urban areas. As an important part of the urban ecosystem, water bodies play an important role in mitigating the Urban Heat Island (UHI) effect. Study the current status of the urban heat island effect and discuss The buffer effect of the water body on the urban heat island is to improve the urban heat island effect and the ecological environment, and provide a theoretical basis for the rational transformation and planning of the city. The central area of ​​Changsha is used as the research area, and the Xiangjiang River that runs through Changsha in the north-south direction is the main The research object, based on the Landsat 8 TIRS remote sensing image of Changsha City in July 2016, uses the atmospheric correction method to retrieve the Land Surface Temperature (LST), uses the supervised classification method to obtain its synchronized urbanization process and land use type, and analyzes the urban area The spatial distribution ch