1. University of Chinese Academy of Sciences, College of Earth Sciences, Key Laboratory of Computational Geodynamics, Beijing 100049, China
2. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China
3. Nanjing Normal University, College of Geographic Science, Nanjing, Jiangsu Province 210023, China
4. Shijiazhuang University, Department of Resources and Environment, Shijiazhuang, Hebei Province 050035, China