1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
2. Department of Geography, University at Buffalo-SUNY, Buffalo, NY, USA
3. Elane Inc, Beijing, China
4. Institute of Geographic Sciences and Nature Resources Research, Chinese Academy of Sciences, Beijing, China
5. The Academy of Digital China, Fuzhou University, Fuzhou, China
6. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China