1. Institute of Water Resources and Hydro-electric Engineering, Xi’an University of Technology, Xi’an, China
2. Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
3. Zhejian Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
4. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China
5. Department of Ecosystem Science & Management, The Penndylvania State University, PA, USA