Yanren Wang, ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, Zhiyong Ling, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, China, Xuke Shen, Lanzhou University, Lanzhou, China, Yunyao Tan, Tibetan Cultural Relics Conservation Institute, Lhasa, China, Dongju Zhang, Lanzhou University, MOE Key Laboratory of Western China's Environmental Systems, College of Earth Environmental Sciences, Lanzhou, China and Xiaoyan Yang, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Key Laboratory of Alpine Ecology, Beijing, China