| Affiliation: | 1 School of Geographic and Oceanographic Sciences, Institute for Climate and Global Change Research, Nanjing University, Nanjing 210093, China; 2 College of Tourism and Environment, Shaanxi Normal University, Xi’an 710062, China; 3 Department of Geography, University of Wisconsin Madison, WI 53706, USA; 4 Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China; 5 Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 6 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
