1. School of Soil and Water Conservation, Beijing Forestry University, Beijing, China
2. School of Earth and Space Sciences, Peking University, Beijing, China
3. Coldwater Laboratory, University of Saskatchewan, Canmore, AB, Canada
4. Balaton Limnological Research Institute, Tihany, Hungary
5. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
6. School of Civil Engineering and Environmental Science, The University of Oklahoma, Norman, OK, USA