1. School of Geography and Information Engineering, China University of Geosciences, Wuhan, China
2. Key Laboratory of Geological Survey and Evaluation of Ministry of Education, China University of Geosciences, Wuhan, China
3. State Key Laboratory of Resources and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
4. School of Resource and Environment Sciences, Wuhan University, Wuhan, China