基于Landsat的广州市热岛效应时空变化分析  

A Spatiotemporal Analysis of Heat Island Effect in Guangzhou Based on Landsat

作　　者：陈炳杰 陈佩敏 黄泽鹏 吴希文 王华[1] Chen Bing-jie;Chen Pei-min;Huang Ze-peng;Ng Alex Hay-Man;Wang Hua(School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《广东工业大学学报》2021年第2期53-59,共7页Journal of Guangdong University of Technology

基　　金：广东省自然科学基金资助项目(2018A030310538);广州市科技计划项目(201904010254);广东工业大学大学生创新训练资助项目(xj202011845274)。

摘　　要：利用1995年~2019年间的15景的Landsat-8 OLI/TIRS及Landsat-5 TM影像的热红外波段,采用大气校正法和单窗算法反演广州市的地表温度。通过对研究结果进行时空分析可知,自1995年~2019年,广州市的热岛面积先处于稳定阶段,然后在2001年~2014年间整体呈快速增长趋势,于2014年后以缓慢速度减少。结果表明,热岛效应得到缓解的地区为旧城区,其变化原因可能与工业区外迁、绿化改善等原因有关。热岛空间分布格局由中心集聚型,逐渐向南北方向和东方向蔓延,演变成带状主导、多中心围绕的空间分布特征,其变化的趋势与城市发展模式基本一致。15 Landsat-8 OLI/TIRS and Landsat-5 TM images from 1995 to 2019 were used to retrieve the land surface temperature in Guangzhou by atmospheric correction and mono-window algorithm.According to the spatiotemporal analysis of the results,from 1995 to 2019,the area of Guangzhou's heat island began to be in a stable stage,then it showed a rapid growth trend from 2001 to 2014,and then decreased at a slow rate after 2014.The results show that the areas where the heat island effect has been alleviated are old urban areas,and the reasons for the change may be related to the relocation of industrial areas and the improvement of greening.The spatial distribution pattern of heat islands was agglomerated from the center,gradually spreading to the north-south direction and the east direction,and then evolved into a strip-shaped dominant,multi-center spatial distribution characteristic.Its changing trend was basically consistent with the urban development mode.

关 键 词：热岛 温度反演 广州 LANDSAT 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]