基于Landsat数据的绵阳市城市热岛效应研究  

Research on Urban Heat Island Effect of Mianyang City Based on Landsat Data

作　　者：余洋 韩如冰[1] 唐中华[1] Yu Yang;Han Rubing;Tang Zhonghua(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang,621000)

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621000

出　　处：《制冷与空调（四川）》2021年第2期196-201,共6页Refrigeration and Air Conditioning

摘　　要：随着城市化进程的不断推进,城市热岛也随之不断发展演变。以2004年至2016年的四组Landsat卫星影像数据为基础,使用基于辐射传输方程的方法获取了绵阳市2004年至2016年的四幅地表温度分布图像;采用监督分类法获取了四幅地表分类图像。研究结果表明:从2004年至2016年,绵阳市的城市区域沿着涪江和安昌河两岸不断延伸,城市建成面积扩大了一倍多,农田和林地的面积则分别减少了17.8%和12.1%;城市热岛分布范围不断扩大,强度在不断地增强;适当的增加城市的水体和植被的面积则能够明显削弱城市热岛效应强度。With the continuous advancement of urbanization,urban heat islands also continue to evolve.Based on the four sets of Landsat satellite image data from 2004 to 2016,this paper uses the method based on the radiative transfer equation to obtain four surface temperature distribution images in Mianyang City from 2004 to 2016;uses the supervised classification method to obtain four surface classification images.The research results show that from 2004 to 2016,the urban area of Mianyang City continued to extend along the banks of the Fujiang and Anchang Rivers,the urban built-up area more than doubled,and the area of farmland and woodland decreased by 17.8%and 12.1%,respectively;The distribution range of urban heat islands continues to expand,and the intensity continues to increase;an appropriate increase in the area of urban water and vegetation can significantly weaken the intensity of the urban heat island effect.

关 键 词：城市热岛 地表温度 土地分类 地温反演 LANDSAT 

分 类 号：P237[天文地球—摄影测量与遥感]