Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA;
Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA;
Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;