1. Key Laboratory of Geological Survey and Evaluation of Ministry of Education, China University of Geosciences (Wuhan), Wuhan 430074, China
2. Qinghai Remote Sensing Center for Natural Resources, Xining 810001, China
3. Geomatics Technology and Application Key Laboratory of Qinghai Province, Xining 810001, China
4. School of Geography and Information Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
5. School of Geophysics and Geomatics, China University of Geosciences (Wuhan), Wuhan 430074, China
6. Research Center of Applied Geology of China Geological Survey, Chengdu 610065, China
7. College of Geographical Sciences, Qinghai Normal University, Xining 810001, China
8. Qinghai Basic Surveying and Mapping Institute, Xining 810001, China