Resource and Environmental Footprint Assessment of Typical High Speed Railway Lines in China
Since the 20th century, the rapid development of China's high-speed railway has attracted worldwide attention. The current high-speed railway operation mileage is the first in the world, and the future "eight vertical and eight horizontal" high-speed railway planning network will cover more than 80% of the major cities. Under such a huge scale of high-speed rail network construction, it is of great reference significance to comprehensively identify the resource and environmental impact of its whole life cycle for the future construction of high-speed rail. This report takes two typical high-speed railways of Beijing-Shanghai Line and Beijing-Tianjin-Hebei Line as the research object. Using the life cycle evaluation method of process analysis and input-output model, the paper comprehensively evaluates the four footprints of carbon, water, land and material during the construction period. From the perspective of high-speed railway subsystem, raw material production department and resource type, the key links of resource environment footprint are identified, as well as the similarities and differences between different lines.