以东部高潜水位区域——兖州煤田为研究区,以Landsat TM数据为数据源,利用单窗算法反演兖州煤田地表温度,分别从土地利用类型、植被覆盖度、距沉陷积水区边缘距离、地表下沉值等4个方面分析研究区地表温度的空间分异特征。结果表明:不同土地利用类型间地表温度差异较大,其中建设用地平均温度最高,水体平均温度最低;地表温度与植被覆盖度呈负相关;在沉陷积水区以外,地表温度随距积水区边缘距离的增加先降低,而后趋于稳定,两者呈指数相关;地表温度自积水区边缘向外随地表下沉值的减小而逐渐降低。

This paper investigates Yanzhou coalfield which locates in Eastern China with high groundwater level. Land- sat TM images are used to extract the land surface temperature using the single window algorithm. The spatial distribu- tion of land surface temperature is analyzed from four aspects including land use type,vegetation coverage,the distance from the edge of water-impounded subsided-area and the subsidence depth. The results show that the land surface tem- perature varies greatly among different land use types;the developed land and the water area have the highest and the lowest average surface temperature respectively;land surface temperature is negatively correlated with vegetation cover- age;land surface temperature decreases with the increase of the distance from the edge of water-impounded subsided- area and then becomes stable by exponential function fitting analysis;the land surface temperature gradually decreases with the decrease of mining subsidence depth outside the impounded water area.