Based on the Landsat series of satellites,temperature inversion and standard deviation ellipse center of gravity analysis were conducted using image data from 2005,2013,2018,and 2022 to extract land use types in Hefei over the past four years.The land use change status and temperature change distribution characteristics in Hefei were obtained and analyzed.The results show that there is a significant temperature change in Hefei,with an average temperature change of around 6 ℃ and a trend of diffusion from the center to the surrounding areas.The high temperature is mainly concentrated in high-density areas of buildings and industrial parks.The land type has undergone significant changes,with large areas of green space disappearing,mainly including bare land and build-ings.The trend of change types isbasically consistent with the trend of high temperature changes.The centroid of the heat island is moving towards the direction of Shushan District,which is in line with the development planning trend of Hefei City.The low-temperature zone mainly consists of green landscape and water bodies,and the fluc-tuation of green landscape is smaller than that of water bodies,making it more suitable as a means and method to alleviate the heat island effect.
关键词
热岛效应/合肥市/遥感影像/土地利用
Key words
heat island effect/Hefei City/remote sensing imagery/land use
维普
万方数据