Study on the development characteristics of glacial lakes in Ximoqu River Basin,Motuo County,Xizang
Feng Sanfei
Chang Yaqi
Li Anqi
Jiang Liang
Mu Yunge
Abstract：In recent years,with global warming,glaciers on the Qinghai-Tibet Plateau have receded,resulting in the rapid expansion of glacial lakes,especially in Motuo County,an important border town at the southern foot of the Hi-malayas,which is increasingly threatened by glacial lake outburst disasters in the Ximoqu Basin,posing a serious threat to human beings and the safty of engineering construction.To this end,the development characteristics of gla-cial lakes in Ximoqu River Basin of Motuo County were studied,the development characteristics of glacial lakes and the distance between glacial lakes and glacier tongues were interpreted by Landsat images and GF-1 remote sensing images,spacial information such as lake elevation evolution characteristics and glacier slope were extracted from AS-TER GDEMV3 30M resolution digital elevation,and the stability of glacial lakes was analyzed by Landsat images.According to the interpretation of remote sensing images in the Ximoqu Basin in 2021 and comparison with those in 1986,the area and number of glacial lakes in the Ximoqu Basin have changed dramatically,with the number of gla-cial lakes larger than 0.02 km2 increasing by 6%and the area of glacial lakes increasing by 32%.Since there are rela-tively few studies on the development characteristics of glacial lakes in the Ximoqu Basin,it is of great significance to study the development characteristics of glacial lakes in Ximoqu Basin for disaster prevention and mitigation and territorial spatial planning in Motuo County.
Keywords：Ximoqu basinGlacial lakeDevelopment characteristics
Publication Date：2024-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 25-32,40 )