Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS) - State Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS) - Northwest Institute of Eco-Environment and Resources, Jiangsu University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Henan University

Lanzhou University, Lanzhou University, Lanzhou University, Lanzhou University, Lanzhou University, Lanzhou University, Dunhuang Research Academy, Dunhuang Research Academy and Henan University