1. Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
2. Science Systems and Applications Inc., Lanham, MD, USA
3. Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, China
4. Bren School of Environmental Science and Management, University of California at Santa Barbara, Santa Barbara, CA, USA