1. Ph.D. Candidate, State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an Univ. of Technology, 5 Xi’an 710048, China.
2. Professor, State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an Univ. of Technology, 5 Xi’an 710048, China (corresponding author).