江苏省农业源氨排放分布特征

目的]研究江苏省氨排放分布特征。方法]根据江苏省农业源活动水平数据,采用排放因子法,建立了2014年江苏省农业源大气氨排放清单,利用GIS软件分析了江苏省农业源氨排放的分布特征。结果]2014年江苏省农业源氨排放总量为679.23 kt,排放强度为6.61 t/km2;畜禽养殖是江苏省农业源氨排放的最大贡献源,占总排放量的67.80%,氮肥施用是第二大贡献源,占29.29%;鸡是江苏省畜禽养殖氨排放最大的贡献源,其次是猪,分别贡献了41.15%和30.17%。结论]江苏省农业源氨排放无论是排放量还是排放强度都呈现出由南向北递增的空间分布特征,苏北地区是江苏省最需要控制的农业源氨排放贡献区。

Agricultural Ammonia Emission Inventory and Its Distribution Characteristics in Jiangsu Province

Objective] To research the distribution characteristics of ammonia emission.Method] Based on the activity data of agricultural am-monia emission sources, an agricultural ammonia emission inventory of Jiangsu in 2014 was compiled by using emission factor method.GIS soft-ware was used to analyze the distribution characteristics of agricultural ammonia emission. Result] Emission amount of Jiangsu Province was ap-proximately 679.23 kt in 2014, and the emission intensity was 6.61 t/km2 .Livestock and poultry breeding and N fertilizer application were main contributor of agricultural NH3 sources, accounting for 67.80%and 29.29%of total NH3 emission, respectively.Meat chicken dominated the e-mission source of livestock and poultry with the percentage of 41.15%, followed by pork pig, which was accounted for 30.17%.Conclusion] The agricultural ammonia emission is increasing from south to north in Jiangsu, and North Jiangsu is the area that must be controlled.