Key Laboratory of Agricultural Water Resources;
Hebei Laboratory of Agricultural Water-Saving;
The Innovative Academy of Seed Design(INASEED);
Center for Agricultural Resources Research;
Institute of Genetics and Developmental Biology;
Chinese Academy of Sciences;
Shijiazhuang 050022;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Hebei University of Architecture;
Zhangjiakou 075000;
China;
vegetation cover change; standardized precipitation evapotranspiration index(SPEI); ecological restoration; drought prevention; Beijing-Tianjin Sandstorm Source Region(BTSSR)Citation:CAO Bo; KONG Xiaole; WANG Yixuan; LIU Hang;