Institute of Tibetan Plateau Research, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085 China ; Key Laboratory of Western China's Environmental Systems (Ministry of Education of China) & College of Resources and Environment, Lanzhou University, Lanzhou, 730000 China
IGPP and Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064 United States
Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109 United States
Key Laboratory of Western China's Environmental Systems (Ministry of Education of China) & College of Resources and Environment, Lanzhou University, Lanzhou, 730000 China
IGPP and Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064 United States
College of Geography, Nanjing Normal University, Nanjing, 210097 China
Key Laboratory of Western China's Environmental Systems (Ministry of Education of China) & College of Resources and Environment, Lanzhou University, Lanzhou, 730000 China