1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, China
2. School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China
3. Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution, Xinyang Normal University, Xinyang, China
4. National-Local Joint Engineering Laboratory of Geo-Spatial Information Technology, Hunan University of Science and Technology, Xiangtan, China