1. Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Henan University, Kaifeng, China
2. College of Geography and Environmental Science, Henan University, Kaifeng, China
3. Nansen Environmental and Remote Sensing Center, Bergen, Norway
4. Hunan Key Laboratory of Remote Sensing Monitoring of Ecological Environment in Dongting Lake Area, Hunan Natural Resources Affairs Center, Changsha, China