1. College of Computer and Information Engineering, Xiamen University of Technology, Xiamen 361024, China
2. Big Data Institute of Digital Natural Disaster Monitoring in Fujian, Xiamen University of Technology, Xiamen 361024, China
3. Jiangxi Key Laboratory of Soil Erosion and Prevention, Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
4. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
5. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China