1. College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, China
2. College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
3. Saitama International Center for Environmental Science, Saitama 330-9301, Japan
4. Chengdu Land and Resources Information Center, Chengdu 611130, China