中文摘要：

我国是一个冻土分布较多的国家,以前利用遥感图像对冻土的研究与应用主要体现在冻土亚类划分等方面。红外遥感图像能够反演地表温度,而冻土区在不同亚类别地区,其地表温度也具有一定的差异性,因此本文在介绍了几种温度反演方法的基础上,利用Aster数据对冻土区地表温度进行了反演和分析。通过分析和研究,发现Aster数据能够反演冻土区地表温度,能够为冻土区铁路选址提供有用的信息,是一种非常实用的方法。

英文摘要：

China is a country with large permafrost distribution.Remote sensing images are mainly used in the sub-class division of frozen soil.However,the infrared remote sensing images can be used to retrieve land surface temperatures,which are different in individual subclasses of frozen soil.Therefore,this article presents several inversion methods for temperatures and applies them to determine surface temperature in permafrost by using Aster data.The inversion results show that surface temperature of permafrost can be obtained,which can provide useful information for indentifying the frozen soil areas during reconnaissance of railway lines.