1. Key Laboratory of Tibetan Environment Changes and Land Surface Processes; Institute of Tibetan Plateau Research, Chinese Academy of Sciences; Beijing China
2. Key Laboratory of Alpine Ecology and Biodiversity; Institute of Tibetan Plateau Research, Chinese Academy of Sciences; Beijing China
3. Department of Civil, Environmental and Construction Engineering; University of Central Florida; Orlando FL USA
4. Department of Scientific Computing; Florida State University; Tallahassee FL USA
5. Cele National Station of Observation & Research for Desert Grassland Ecosystem, Xinjiang Institute of Ecology and Geography; Chinese Academy of Sciences; Urumqi China