1. Ph.D. Candidate, State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an Univ. of Technology, Xi’an 710048, China.
2. Professor, State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an Univ. of Technology, Xi’an 710048, China (corresponding author).
3. School of Civil Engineering, North Minzu Univ., Yinchuan 750021, China.