1. School of Environment University of Auckland Auckland New Zealand
2. College of Earth and Environmental Science, Lanzhou University Lanzhou China
3. State Key Laboratory of Plateau Ecology and Agriculture College of Agriculture and Animal Husbandry, Qinghai University Xining China
4. State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan China
5. Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China