Research on the Information Extraction of Periglacial Geomorphology in Qinghai-tibet Plateau

Takes Qinghai-Tibet Plateau as a research field, this paper based on the models and algorithms, completes the numerical information extraction of periglacial geomorphology distribution by using SRTM-DEM and annual mean temperature data. Based on the extracted results and remote sensing images, the periglacial geomorphology distribution in Qinghai-Tibet Plateau is achieved by visual interpretation. According to the visual interpreting results, the quality and precision of the extracted information are discussed and analysed. Finally, on the foundation of the 4 permafrost regions in Qinghai-Tibet Plateau, the quality and precision of the extracted information of periglacial geomorphology are studied accordingly; taking Massive Continuous Permafrost Region in Qiangtang Plateau as an example, the quality and precision of the extracted results in this area are analyzed specifically.