1. Associate Professor, School of Economics and Management, Xi’an Key Laboratory of Green Infrastructure Construction and Management, Chang’an Univ., Xi’an 710064, China.
2. Master’s Student, School of Economics and Management, Chang’an Univ., Xi’an 710064, China.
3. Professor, School of Civil and Hydraulic Engineering, Huazhong Univ. of Science and Technology, Wuhan 10074, China.
4. Professor, School of Economics and Management, Chang’an Univ., Xi’an 710064, China (corresponding author).