温室气体
环境科学
城市轨道交通
发射强度
中国
生命周期评估
单位(环理论)
环境工程
二氧化碳当量
运输工程
工程类
地理
生态学
激发
数学教育
电气工程
宏观经济学
考古
数学
生产(经济)
经济
生物
作者
Hao Guo,Liyuan Zhao,Shuo Zang,Yun Wei
出处
期刊:Proceedings of the Institution of Civil Engineers
[Thomas Telford Ltd.]
日期:2023-10-18
卷期号:: 1-8
标识
DOI:10.1680/jensu.23.00001
摘要
In China, the total energy consumption and greenhouse gas (GHG) emissions will reach considerable levels based on the current speed of urban rail transit system development. Based on the life-cycle assessment theory, this research constructs an urban rail transit system GHG emission assessment method, calculates emission outputs based on resource inputs from actual investigated data and makes a quantitative analysis of GHG emissions. The results show that in recent years, the GHG emission of urban rail transit construction and operation in China is between 2000 × 10 4 and 4200 × 10 4 tonnes of carbon dioxide equivalent (tCO 2 e) per year. The proportions of the construction and operational phases in this emission are 57 and 43%, respectively. In the construction phase, the GHG emission intensity per unit mileage of shield tunnels and per unit area of stations is about 1.3 × 10 4 tCO 2 e/km and 3.71 × 10 4 tCO 2 e/ha, respectively. In the operational phase, the GHG emission intensity per unit trip is 0.084 kg carbon dioxide equivalent/passenger-km. The entire life-cycle GHG emission per kilometre of urban rail transit systems is 11.69 × 10 4 tCO 2 e (with a service life of 50 years) in China. The construction phase and operation phase generated about 18.73 and 81.27% of this emission, respectively. The preliminary conclusions of this study may help shed light on the emission reduction potential of urban rail transit systems and the emission reduction targets in China.
科研通智能强力驱动
Strongly Powered by AbleSci AI