四川省非道路移动源大气污染物排放清单研究

根据调查收集到的2015年四川省工程机械、农业机械、铁路机车、船舶和民航飞机的保有量、活动水平等数据,采用"排放因子法"计算了非道路移动源大气污染物排放量,分析了2015四川省非道路移动源的尾气污染排放特征,并建立了3km×3km的网格化排放清单.结果表明,2015年四川省非道路移动源排放的PM₁₀为1.38×10⁴t,PM_2.5为1.25×10⁴t,NO_x为1.83×10⁵t,THC为2.98×10⁴t,CO为1.21×10⁵t.工程机械对污染物的贡献率相对较高,占比达到70%;其次为农业机械,对NO_x和PM的贡献占比分别达到15%.工程机械和农业机械的排放主要集中在夏季和秋季,而飞机、铁路机车和船舶的时间变化较不明显;而从空间分布来看,高排放源主要分布于成都平原地区和川南地区.

Study on the non-road mobile source emission inventory for sichuan province

The emission amount and characters of air pollutants from non-road mobile sources were analyzed with emission factor method, based on the collected vehicle population and activity levels of construction machinery, agricultural machinery, locomotives, ships, and civil aircrafts in Sichuan Province in 2015. Subsequently, a 3km×3km grid emission inventory was established. The results showed that the emissions of PM₁₀, PM_2.5, NO_x, THC and CO were about 1.38×10⁴t, 1.25×10⁴t, 1.83×10⁵t, 2.98×10⁴t and 1.21×10⁵t respectively. The construction machinery was the largest source, which contributes more than 70%. The second contributor was the agricultural machinery, about 15%. The emissions of the two primary sources mainly concentrated in summer and autumn, comparing to the uniform distribution of locomotives, marine and civil aircraft. Spatially, the high emission sources are mainly distributed in the Chengdu plain and the southern region of Sichuan.