1. School of Geographic Sciences, Hunan Normal University, Changsha, China
2. Hunan Key Laboratory of Remote Sensing Monitoring of Ecological Environment in Dongting Lake Area, Hunan Natural Resources Affairs Center, Changsha, Hunan, China
3. Key Laboratory of Geospatial Big Data Mining and Application, Hunan Normal University, Changsha, Hunan, China
4. School of Computer Science, Hubei University of Technology, Wuhan, China