1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China
2. School of Geography and Information Engineering, China University of Geosciences, Wuhan, China
3. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
4. Joint Institute for Regional Earth System Science and Engineering, University of California at Los Angeles, Los Angeles, CA, USA
5. Department of Land Surveying and Geo-Informatics and the Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong, China
6. College of Resources and Environmental Science, Ningxia University, Yinchuan, China
7. Wuhan Geomatics Institute, Wuhan, China