2006—2017年安徽省人为源氨排放清单及特征

Anthropogenic ammonia emission inventory and its spatial distribution in Anhui Province from 2006 to 2017

基于排放因子法建立了2006—2017年安徽省人为源氨排放清单,估算人为源氨的排放水平、变化趋势及其分布特征。结果表明,安徽省2017年人为源氨排放量较高的两个地区是阜阳市和六安市,而氨排放总量最小的是马鞍山,占全省氨排放总量的1.83%。安徽省氨平均排放强度为5.34 t·km^-2,其中阜阳市、淮南市及蚌埠市的排放强度均超过7 t·km^-2。2006—2017年畜禽养殖源产生的氨排放量处于增加状态,尤其是肉猪、肉鸡和肉鸭的贡献分别占到畜禽源氨排放总量的34.49%~38.39%、20.31%~32.8%和10.40%~16.42%。而氮肥施用导致的氨排放量表现出先增加后下降的趋势,2017年产生的氨排放量比2013年下降了28.71 kt。生物质燃烧、人体排放和氮肥生产是非农业源氨排放的主要来源,但由机动车产生的氨的贡献呈明显增长趋势,如从2006年的1.86%增长到2017年的7.47%,这与近年来安徽省汽车保有量不断增加有关。

The anthropogenic ammonia emission inventory in Anhui Province from 2006 to 2017 was made by using the emission factor method.The anthropogenic ammonia emission level,trend and spatial distribution characteristics were also analyzed.The results showed that Fuyang City and Lu an City were the two areas with higher anthropogenic ammonia emissions in Anhui Province in 2017,while Ma anshan had the smallest emission amount,accounting for 1.83% of the total in Anhui Province.The average ammonia emission intensity in Anhui Province was 5.34 t·km^-2 .The ammonia emission intensity in Fuyang,Huainan and Bengbu were all over 7 t·km^-2 .Ammonia emissions from livestock and poultry breeding sources increased from 2006 to 2017,especially from pigs,broilers and ducks,which accounted for 34.49%—38.39%,20.31%—32.8% and 10.40%—16.42% of the total ammonia emissions from livestock and poultry sources respectively.The ammonia emission from nitrogen fertilizer showed a trend from increase to decrease,and the amount in 2017 was 28.71 kt lower than that in 2013.Biomass combustion,human emissions and nitrogen fertilizer production were the main sources of ammonia emissions among non-agricultural sources,but the contribution of ammonia produced by motor vehicles showed a significant increasing trend.For example,the percentage of ammonia emission from motor vehicles increased from 1.86% in 2006 to 7.47% in 2017,which was related to the increasing vehicle ownership in Anhui Province in recent years.