1. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Geography, Nanjing Normal University, Nanjing, China
2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
3. Department of Geography, University of Wisconsin-Madison, Madison, WI, USA
4. Center for Social Sciences, Southern University of Science and Technology, Shenzhen, China
5. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China