Research on Carbon Emission Calculation of Urban Rail Transit—Taking Suzhou Metro Line 6 as an Example

随着温室效应日益严重、极端天气频发，我国率先提出了“双碳”目标并顺势推出国家碳交易平台，而正确计算城轨交通项目的碳排放量是实现“双碳”目标的基础前提。因此，本文通过全生命周期研究方法，定量计算了城轨交通项目全过程的碳排放总量(在已有的研究基础上汇总分析了各阶段主要的碳排放来源并分析了来源产生能耗的重要影响因子)。全文通过结合具体实际案例苏州地铁6号线，将计算方法切实可效地运用在案例中，并最终计算出6号线项目在全生命周期的碳排放总量。计算结果为我国将来针对城轨项目建设和运营阶段的降碳措施落地以及实际减排项目进入碳交易平台进行碳交易打下了坚实基础。With the increasingly serious greenhouse effect and the frequent occurrence of extreme weather, China took the lead in proposing the “double carbon” goal and launching a national carbon trading platform, and the correct calculation of carbon emissions from urban rail transit projects is the basic premise for achieving the “double carbon” goal. Therefore, this paper quantitatively calculates the total carbon emissions of the whole process of urban rail transit projects through the whole life cycle research method (on the basis of the existing research, the main carbon emission sources of each stage are summarized and analyzed, and the important influencing factors of energy consumption generated by the sources are analyzed). In this paper, the calculation method is effectively applied to the case by combining the specific case of Suzhou Metro Line 6, and finally calculates the total carbon emissions of the Line 6 project in the whole life cycle. The calculation results lay a solid foundation for the implementation of carbon reduction measures in the construction and operation stages of urban rail projects in China in the future, as well as the entry of actual emission reduction projects into carbon trading platforms.