中文摘要：

陆地表面温度（LST）是地表能量平衡中的一个非常重要的参数,它在地表与大气相互作用过程中起着重要的作用.在总结和分析当前常用的地表温度反演算法后,根据收集到的1993年8月25日TM的资料,采用单通道算法反演长株潭城市群地表温度（LST）,利用卫星过境当天观测的平均温度对反演结果进行验证,误差小于1℃,可以满足大多数应用的精度要求.地表温度反演结果表明：反演结果与实际相吻合,平均温度为27℃;反演温度大小依次是城镇用地高于自然植被,自然植被高于水体;地表温度由城镇中心向外呈现逐渐降低的趋势,长沙、株洲和湘潭市城区温度明显比其它地区高.

英文摘要：

Land-surface temperature （LST） is a very important parameter in surface energy balance, which plays a key role in the interactions between ground and atmosphere. Based on an introduction and analysis of the algorithms commonly used to retrieve surface temperature, a mono-window algorithm is selected to retrieve the surface temperature due to the data on hand. After validating the results of LST with the average air temperature obtained from meteorological stations in August 25, 1993, the results show that the error is smaller than 1℃, which is accurate for many applications. In conclusion, the following can be summarized： 1） the retrieved results are reasonable since the average LST with a value of 27 ℃ is consistent to the temperature of the study area in August; 2） city or town land has the highest LST, followed by vegetation and water; 3） according to the distribution of retrieved LST, temperature gradually decreases from the center of cities, thus the temperatures of Changsha, Zhuzhou and Xiangtan urban areas being obviously higher than that in other areas.