supported by the Soft Science Project of Gansu province(1504ZKCA090-1);the National Natural Science Foundation of china(grant nos.41671516,41701623,51369003);the Foundation for Excellent Youth Scholars of NIEER,CAS,National Natural Science Foundation of China(Grant No.41661144046);supported by the Special Foundation for Gansu Province International Scientific Cooperation(1604WKCA002);the Fundamental Research Funds for the Central Universities(lzujbky-2015-K10,lzujbky-2016-862516,lzujbky-2017-it90)
Desertification, soil salinization and grassland degradation are the major environmental hazards faced by the Gannan Plateau, northeastern Tibetan Plateau. Ecological risk assessment plays an important role in formula...