1. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, P R China
2. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, P R China
3. Resources and Environmental Engineering, Shandong University of Technology, Zibo, China
4. Department of Biology, The High School Affiliated to Minzu University of China, Beijing, P R China