1. School of Environment, University of Auckland, Auckland, New Zealand
2. State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
3. International Office, Qinghai University, Xining, China
4. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
5. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, China