利用 MOVES 模型对2012年西安市出租车油改气后污染物排放因子进行模拟,得出污染物 CO、NO x、PM2.5、PM10、HC 的排放因子分别为3.4881 g /km、0.3700 g /km、0.0047 g /km、0.0051 g /km、0.0952 g /km,计算得到5种污染物的年排放总量分别为4830.76 t、512.42 t、6.51 t、7.06 t、131.85 t。将得到的数据与2010年相关数据比对,说明出租车油改气后污染物排放量在机动车总排放量中所占比例有所下降。%In this paper,the taxi′s pollutant emission factors of Xi′an City are simulated by using MOVES. The results showed that the emission factors of CO、NO x、PM2.5 、PM1 0、HC are 3.488 1 g /km、0.370 0 g /km、0.004 7 g /km、0.005 1 g /km、0.095 2 g /km.As a result,the total quantity of the taxi emissions of Xi′an City are calculated and the results are as follows:4 830.76 t、51 2.42 t、6.51 t、7.06 t、1 31 .85 t.Compared with re-lated data in 201 0,the emission proportion of taxi has decreased after the implementation of the substitution of oil with gas policy.
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