1. Computational Social Science Program, College of Science, George Mason University, Fairfax, VA, USA
2. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
3. School for Environment and Sustainability, the University of Michigan, Ann Arbor, MI, USA
4. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang, China