1. Department of Ecology and Environment of Anhui Province, Anhui Ecological and Environmental Monitoring Center, Hefei, China
2. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, China
3. The Key Laboratory of Knowledge Engineering with Big Data of Ministry of Education, Hefei University of Technology, Hefei, China
4. School of Computer and Information, Hefei University of Technology, Hefei, China