1. Graduate Student, Dept. of Municipal and Environmental Engineering, Xi’an Univ. of Technology, Xi’an 710048, China.
2. Professor, State Key Laboratory of Eco-Hydraulics in the Northwest Arid Region of China, Xi’an Univ. of Technology, Xi’an 710048, China (corresponding author).
3. Associate Professor, School of Architecture and Civil Engineering, Xi’an Univ. of Science and Technology, Xi’an 710054, China.
4. Graduate Student, School of Architecture and Civil Engineering, Xi’an Univ. of Science and Technology, Xi’an 710054, China.