1. College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing, China
2. Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xu Zhou, China
3. Institute of Remote Sensing and GIS, Peking University, Beijing, China
4. Research Center for Territorial and Spatial Use Control, China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing, China