1. Laboratory of Simulation on Soil Process, College of Geography and Resources Science, Neijiang Normal University, Neijiang, Sichuan, China
2. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
3. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing, China
4. Environment, Geology and Natural Resource, Ball State University, Muncie, Indiana, U.S.A
5. College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing, China
6. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, China