Monitoring Multi-Temporal Changes of Lakes on the Tibetan Plateau Using Multi-Source Remote Sensing Data from 1992 to 2019:A Case Study of Lake Zhari Namco  

作　　者：Juan Wu Chang-Qing Ke Yu Cai Zheng Duan 

机构地区：[1]Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology,Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources,School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China [2]Collaborative Innovation Center of Novel Software Technology and Industrialization,Nanjing 210023,China [3]Guangxi Water and Power Design Institute Co.,Ltd,Nanning 530022,China [4]Collaborative Innovation Center of South China Sea Studies,Nanjing 210023,China [5]Department of Physical Geography and Ecosystem Science,Lund University,Lund 22362,Sweden

出　　处：《Journal of Earth Science》2024年第5期1679-1691,共13页地球科学学刊（英文版）

基　　金：jointly funded by the National Natural Science Foundation of China(Nos.42011530120,41830105,41901129);the Swedish Foundation for International Cooperation in Research and Higher Education(No.CH2019-8250)。

摘　　要：Lake level,area and volume are sensitive indicators of climate change.At present,many studies have focused on the interannual water balance of lakes,but lake level and area can change remarkably with seasons,especially for lakes with seasonal ice cover.Zhari Namco,a seasonal frozen lake,was selected as an example to investigate its seasonal water balance.Multi-source altimetry and Landsat data were used to obtain the seasonal lake level and area from 1992 to 2019,and seasonal lake volume variations were also estimated.The results indicated the average lake level,area and volume in autumn were the largest.The lake level,area,and volume experienced three turning points approximately in 2000,2010,and 2016,and showed an overall increasing trend from 1992 to 2019,with slopes of 0.15 m/year,2.17 km^(2)/year,and 0.14 km^(3)/year,respectively.The lake area expanded significantly in autumn,which was related to the abundant precipitation.Delay time of land surface runoff,increased temperature,and evaporation may be the reason for the low lake level and volume in summer.The precipitation was the dominant factor of water balance,which explained 62.09%,62.43%,and 62.10%of the variations in lake level,area,and volume,respectively.

关 键 词：lake level lake area lake volume satellite altimetry LANDSAT Zhari Namco HYDROGEOLOGY 

分 类 号：P332[天文地球—水文科学] TP79[水利工程—水文学及水资源]