基于LandsatTM／ETM＋的天津地区地表温度时空分布特征研究

以天津地区为研究对象，利用单窗算法对1993年、2001年和2009年3景LandsatTM／ETM＋遥感影像数据进行地表温度反演，将反演结果进行标准差分类后得到地表温度等级图．通过对不同时期地表温度分布进行时空分析，得到天津地表温度高温区在1993年到2009年期间主要集中在中心城区、滨海新区以及两者之间道路沿线等区域，其中，中心城区高温区不断加剧，滨海新区高温区从无到有、由弱到强，变化非常明显．分析结果表明：天津地表温度的空间分布与城市空间结构基本吻合，变化趋势与城市发展基本一致．

Study on temporal and spatial variation of land surface temperature based on Landsat TM/ETM+ in Tianjin

The spatial and temporal variation of land surface temperature(LST) in central city and Binhai new area of Tianjin was studied with Landsat TM/ETM+.Using mono-window algorithm,the LST was retrieved from Landsat TM/ETM+ thermal band data from three dates in 1993,2001 and 2009.Then the LST was classified into distribution maps by means of standard deviation,and the proportion of temperature class was also calculated and plotted.The results of analysis of maps and plots showed that high temperature area mainly focused in central city,Binhai new area and areas along the roads between the two areas.From 1993 to 2009,high temperature area was becoming larger and harder.The effect of high LST on central city was aggravated,and the effect of high LST on Binhai new area started from scratch,from less to more and experienced obvious changes.The results showed that in some kind of degree,the change of LST distribution reflected the adjustment of urban layout structure made by government.