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针对目前绿洲地表温度时空变化的研究较少的现状,该文采用覃志豪单窗算法,利用1990年、1998年和2011年三期Landsat数据对精河县的地表温度进行反演,并查询实时陆面地表温度进行对比检验;分析了不同时期精河县地表温度分布格局,将反演的地表温度划分为低温区、次低温区、中温区、次高温区、高温区和极高温区。研究得出:各温度区间的分布范围发生了巨大变化;反演结果符合水体温度最低、绿洲次之、裸地最高的“冷岛”现象。结果表明利用Landsat数据反演地表温度是可行的。
Aiming at the current situation that there is little research on temporal and spatial variation of surface temperature in oasis, this paper uses Qin Zhihao single-window algorithm to invert the surface temperature of Jinghe County using Landsat data of 1990, 1998 and 2011, The ground surface temperature is compared and tested. The surface temperature distribution pattern of Jinghe County in different periods is analyzed. The inverted surface temperature is divided into low temperature zone, sub-low temperature zone, mid-temperature zone, sub-high temperature zone, high temperature zone and extremely high temperature zone. The results show that the distribution range of each temperature interval has undergone tremendous changes. The inversion results are in line with the phenomenon of “cold island” with the lowest water temperature, the second with oasis and the highest bare land. The results show that using Landsat data to retrieve the surface temperature is feasible.