1. State Key Laboratory Base of Eco-hydraulic in Northwest Arid Area, Xi’an University of Technology, No. 5 South Jinhua Rd., Xi’an 710048, PR China, http://orcid.org/0000-0003-0569-9845 (S.-X.F.)
2. State Key Laboratory Base of Eco-hydraulic in Northwest Arid Area, Xi’an University of Technology, No. 5 South Jinhua Rd., Xi’an 710048, PR China (Corresponding author), e-mail: xuzengguang@xaut.edu.cn, http://orcid.org/0000-0003-4290-5994