1. Institute of Soil and Water Conservation; Northwest A&F University; Yangling Shaanxi China
2. Institute of Soil and Water Conservation; Chinese Academy of Science and Ministry of Water Resources; Yangling Shaanxi China
3. The Global Change Research Institute; College of Life Sciences; Nanjing University; Nanjing Jiangsu China
4. Department of Geography; the University of Toronto; Toronto ON Canada
5. The Center for Global Change & Earth Observations; Michigan State University; East Lansing MI USA
6. Department of Environmental Sciences; Faculty of Agricultural and Environment; The University of Sydney; Sydney NSW Australia
7. NOAA National Climatic Data Center (NCDC); Asheville NC USA