Whole Life-cycle Carbon Emissions Based on Actual Metro Lines
Under the major strategic deployment of a dual-carbon strategy,studying the whole life-cycle carbon emissions of rail transit and reasonably quantifying its carbon emission level is essential to achieve peak carbon and carbon neutrality in the transportation sector.Based on a new metro line in Beijing,this study analyzes the whole life-cycle carbon emissions of rail transit,establishes a carbon emission calculation model for the whole line and the whole life-cycle of rail transit,and quantitatively calculates the carbon emission of the whole line and the whole life-cycle of the new metro line.Carbon reduction measures in the construction and operation phases are analyzed simultaneously,and their carbon reduction potential is quantitatively assessed.The carbon emission calculation for the 81km long new metro line yields a carbon emission of 2.57 million tons of CO2eq in the construction phase,54,000 tons of CO2eq per year in the operation phase,and a total carbon emission of 5.24 million tons of CO2eq in the 50-year operation cycle.The use of renewable materials and prefabricated structures in the construction phase can reduce carbon emissions by 7％.The use of comprehensive carbon-reducing measures in the operation phase can reduce carbon emissions by 27％,and the carbon reduction potential of the 50-year operation cycle is 17％.The establishment of the model has guiding significance for the quantitative calculation of carbon emissions in the whole life cycle of urban rail transport,and the research results of the carbon reduction measures can provide a reference for urban rail transport to achieve a green and low-carbon transformation and carbon peak and carbon neutrality in the transport sector.
urban rail transitlife-cycle assessmentcarbon emissionsgreen and low carbon
万方数据
维普
