1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
2. Human Settlements Research Center, Liaoning Normal University, Dalian, China
3. School of Humanities and Law, Northeastern University, Shenyang, China
4. School of Biological Sciences, University of Oklahoma, Norman, OK, USA
5. School of Earth and Planetary Sciences, Curtin University, Perth, WA, Australia