基于TM数据的昆明市主城区地表温度分析  

Analysis of Surface Temperature Based on TM in Kunming Urban

作　　者：张琴[1] 陈旭[1] 李帅 

机构地区：[1]西南林业大学计算机与信息学院,昆明650500 [2]昆明市节能监察支队,昆明650500

出　　处：《现代计算机（中旬刊）》2014年第7期57-61,共5页Modern Computer

基　　金：云南省科技计划项目(No.2011FZ140)

摘　　要：利用昆明市2003年、2005年和2009年的Landsat 5 TM影像,通过监督分类将地表分为水体、城镇、自然表面和植被四类,并通过NDVI值计算得到昆明市主城区的植被覆盖度。同时,基于监督分类和植被覆盖度的结果,对昆明市主城区的地表比辐射率进行估算,并利用辐射传输方法对昆明市主城区的地表温度进行反演,进而分析不同时期昆明市主城区地表温度的差异和同一时间不同地区的地表温度的变化。研究结果表明:昆明市主城区大面积植被主要覆盖于西山区和官渡区,这两个行政区的平均地表温度低于盘龙区和五华区。植被在一定程度上降低了地表温度,植被覆盖越大,降低温度程度越明显。Based on three phases TM image of Kunming acquired in 2003, 2005 and 2009. Analyzes the surface temperature of Kunming.Therefore, the earth＇s surface is divided into four types of vegetation, towns, natural surface and water by supervised classification, and calculated NDVI to get the vegetation coverage. Meanwhile, it can be also used to estimate the surface emissivity and invert the surface temperature by radiative transfer method. Obtains new insights. Results show that large areas of vegetation cover mainly distributed in the west mountain and Guan Du, the average surface temperature of the two region was lower than the Pan Long and Wu Hua. Furthermore, vegetation can reduce the surface temperature in some degree, the greater vegetation cover,the lower surface temperature.

关 键 词：植被覆盖 地表温度 TM 昆明市主城区 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]