摘要
以南京市为研究区域,基于Landsat系列影像,采用单窗算法反演南京市2000-2017年的地表温度。通过地表温度均值标准差法划分城市热岛等级,分析南京市城市热岛时空演变特征,并基于归一化植被指数(NDVI)和归一化建筑指数(NDBI),分析南京市城市热岛和植被覆盖及不透水面的关系。研究结果表明,南京市2000—2017年城市热岛现象明显且有逐渐增长趋势;南京市城市热岛与植被覆盖、城市不透水面表现出较强的空间一致性;南京市城市热岛与植被覆盖和不透水面分别呈现负相关和正相关关系。研究为南京市城市环境管理与城市合理规划提供了一定的理论依据与参考。
Taking Nanjing as an example,this article retrieves the land surface temperature(LST)of Nanjing from year 2000 to year 2017 by single window algorithm.The urban heat island(UHI)classes was divided by standard deviation of mean,and the spatial and temporal variations of UHI for the study area were analyzed.Besides,the relationships between UHI,vegetation cover and impervious surface were analyzed with the help of the normalized differential vegetation index(NDVI)and normalized differential building index(NDBI).Results show that the UHI effect in Nanjing from year 2000 to year 2017 is obvious and tend to increase.The UHI of Nanjing shows strong spatial consistency with vegetation cover and impervious surface.The UHI is negatively related to vegetation cover,but positively related to impervious surface.The study provides theoretical supports for urban environment management and urban planning in Nanjing.
作者
朱俊峰
马苗苗
耿丽艳
ZHU Junfeng;MA Miaomiao;GENG Liyan(Henan Institute of Geophysical Space Information,Zhengzhou 450000,China;Henan College of Surveying and mapping,Zhengzhou 450000,China;Institute of Surveying and mapping Geographic Information,Bureau of Geology and Mineral Exploration and Development of Henan Province,Zhengzhou 450000,China)
出处
《地理信息世界》
2021年第5期52-57,共6页
Geomatics World
关键词
城市热岛
地表温度
植被覆盖
不透水面
urban heat island
land surface temperature
vegetation cover
impervious surface
