1. Department of Road and Rail Engineering, School of Civil Engineering, Beijing Jiaotong University, No. 3 Shangyuancun Rd., Haidian District, Beijing 100044, China
2. Research Institute of Green Transportation and Landscape Environment, No. 3 Shangyuancun Rd., Haidian District, Beijing 100044, China (Corresponding author), e-mail: xcqin@bjtu.edu.cn, https://orcid.org/0000-0003-0325-6565
3. Research Institute of Environmental Impact Assessment, Ministry of Environmental Protection, No. 28 Beiyuan Rd., Chaoyang District, Beijing 100012, China