1. Ministry of Education Laboratory of Earth Surface Process, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
2. Center for Climate Change and Environmental Policy, Chinese Academy for Environmental Planning, Beijing 100012, China
3. Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences, East China Normal University, Shanghai 200241, China
4. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
5. School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06511, United States
6. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China