Parameters for estimating the emission factors of different travel modes in Xiamen City.

Notes:aThe data of Sj, Ej, Qj and Vj are derived from Xiamen City’s Transportation Committee and Xiamen Transportation Company. b Calorific values are taken from ‘General calculation principles for total production energy consumption (GB/T-2589–2008)’ (in Chinese). c Emission factors were extracted from the Technology and Environmental Database (TED) in Lin’s study [6]. d This equation will always underestimate the total emissions due to transport because the parameter Sj does not record fuel use while a vehicle is stationary.注a：Sj、Ej、Qj及Vj的数据来源于厦门市交通运输委员会与厦门交通公司。 注b：热值取自《综合能耗计算通则（GB/T 2589–2008）》。 注c：排放因子提取自林[6]的研究中的技术与环境数据库（Technology and Environmental Database, TED）。 注d：因参数Sj未记录车辆静止状态下的燃油消耗，该公式将始终低估交通运输总排放量。