WANG Yun-qiang1,2,ZHANG Xing-chang2,ZHU Yuan-jun2,ZENG Chen3(1.Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,2.State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources,Yangling,Shaanxi 712100,3.Key Laboratory of Tibetan Environment Changes and Land Surface Processes,In...