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以大通河源区为研究区域,分析了植被对多年冻土分布的影响.以等效高程为基础,根据实测的多年冻土地温数据和植被调查数据,建立了不同植被类型条件下的冻土地温-等效高程关系模型.借助于TM遥感数据、DEM数据和GIS技术模拟了大通河源区植被覆盖区的多年冻土地温分布特征.以地温数据为基础,参照青藏高原多年冻土分带方案,对多年冻土的分类特征进行了研究.结果表明:大通河源区多年冻土年均地温为-8.66～1.72℃,多年冻土和季节冻土的面积比例分别为95%和5%,其中极稳定型、稳定型、亚稳定型、过渡型和不稳定型多年冻土各类型的面积比例依次为1%,12%,31%,35%和16%.
Based on the equivalent elevation, based on the measured ground temperature data and vegetation survey data of the permafrost, the paper establishes the ground temperature of permafrost under different vegetation types - Equivalent Elevation Relationships Model.Taking advantage of TM remote sensing data, DEM data and GIS technology to simulate the geothermal distribution characteristics of permafrost in the vegetation coverage area of Datong Heyuan Region, based on the geothermy data and referring to the zoning plan of permafrost in Qinghai-Tibet Plateau, The results show that the average annual temperature of permafrost in the Datong Heyuan area is -8.66 ~ 1.72 ℃, and the areas of permafrost and seasonal frozen soil are 95% and 5% The areas of all types of stable, stable, metastable, transitional and unstable permafrost regions were 1%, 12%, 31%, 35% and 16% respectively.