1 College of Land Science and Technology, China Agricultural University, Beijing, China.
2 Key Laboratory of Remote Sensing of Agricultural Disasters, Ministry of Agriculture and Rural Affairs, Beijing, China.
3 Faculty of Geographical Sciences, Beijing Normal University, Beijing, China. [email protected].
4 Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA.
5 School of Geography and Ocean Science, Nanjing University, Nanjing, China.
6 Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, The Netherlands.
7 Department of Geography and Resource Management, and Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Hong Kong, China.
8 Department of Human Geography and Spatial Planning, Utrecht University, Utrecht, the Netherlands.
9 State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographic Sciences and Nature Resources Research, Chinese Academy of Sciences, Beijing, China. [email protected].