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Accuracy verification of the Tibetan Plateau Permafrost Map based on MODIS LST product

SHI Yaya;YANG Chengsong;CHE Tao;University of Chinese Academy of Sciences;State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences;Heihe Remote Sensing Experiment Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences;  
The use of remote sensing data can greatly improve the efficiency of the Tibetan Plateau permafrost classification and mapping,and less require the observation in cold terrain,which avoid the huge consumption of manpower and material resources. To assess the accuracy of the Permafrost Map based on MODIS LST products,in this study,the 1: 4 000 000 Tibetan Plateau Permafrost Map,the 1: 3 000 000 Tibetan Plateau Permafrost Map and the Tibetan Plateau Permafrost Map based on MODIS LST product were validated comprehensively in the Wenquan area in the east of the plateau and the West Kunlun Mountains in the northwest of Tibetan Plateau. The results show that the Tibetan Plateau Permafrost Mapping based on MODIS LST product can better reflect the distribution and features of the permafrost. At the same time,there are many differences between the permafrost and seasonal frozen soil edge regions,mainly due to the mapping time difference,local factors,vegetation,snow cover and other multiple factors.
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