基于Landsat影像的南京地区热岛效应  

Investigation on Heat-island Effect in Nanjing Area by Landsat TM Data

作　　者：谭桂容[1] 蔡哲[1] 徐永明[1] 

机构地区：[1]教育部气象灾害重点实验室南京信息工程大学气象台,江苏南京210044

出　　处：《安徽农业科学》2009年第13期6050-6052,6066,共4页Journal of Anhui Agricultural Sciences

基　　金：吉林省气象局基金项目资助

摘　　要：以南京地区作为研究区域,利用Landsat TM的热红外波段作数据,通过单窗算法反演出地表温度,进而分析地表温度的空间分布差异情况以及由此引起的热岛效应。结果表明,在南京人口密集的城区存在明显的热岛效应,而水体和林地的温度比较低,两者地表温度差异达10℃以上。地表比辐射率与地表真实温度有密切关系,表明地表覆盖类型在地表热量分布中起重要作用。In terms of land,sat TM thermal infrared band data, the land surface temperature was calculated with the mono-window algorithm. Then the spatial distribution of the land surface termperature was investigated for heat island effect. The results showed that densely populated urban heat island effect was noticeable in Nanjing with surface temperature about 10 ℃ higher than that of water and forestland area. And that actual surface temperature was closely related to surface emissivity which showed surface overlay types play an important role on surface heat distribution.

关 键 词：热岛效应 LANDSAT TM 地表温度 单窗算法 

分 类 号：S127[农业科学—农业基础科学]