1. Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
2. Department of Geography, University of Utah, Salt Lake City, USA
3. School of Public Administration, Nanjing University of Finance & Economics, Nanjing, China
4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China