Affiliation: | 1. College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China 2. Guangzhou Institute of Geography, Guangzhou 510070, China;Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou 510070 China 3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;University of Chinese Academy of Sciences, Beijing 100049, China 4. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China |