摘要
氨是形成可吸入颗粒物的重要前体物,采用排放因子法,对天津市畜禽养殖业氨排放量进行了估算和分布特征分析。结果表明,2014年天津市畜禽养殖业氨排放量为30974.33t,排放强度为2.59t/km^2;蛋鸡是最大的氨排放源,贡献率为38.01%,其次为奶牛,贡献率为22.50%,母猪为最小的氨排放源,贡献率为2.05%;氨的排放系数具有明显的时间特征:中午高,夜间低,8月份最高,1月份最低;在各区县中,蓟县氨排放量最大,贡献率为22.61%,东丽区氨排放量最小,贡献率为1.02%,氨具有较强的空间分布差异性。
Ammonia is an important precursor to form fine particulates.The estimation and distribution characteristics of ammonia emission from livestock farming industry in Tianjin in 2014 were compiled by using emission factor method.Results show that 30974.33 tons of ammonia was produced form livestock farming industry in Tianjin and the emission intensity was 2.59t/km2.Layer was the largest contributor with 38.01% of total livestock,followed by cow with contributions of 22.50%.And sow was the least contributor with 2.05%.Ammonia emission had strong time characteristics with maximum emissions in midday and the August,while the minimum occurred at night and in January.In all counties,Jixian was the largest contributor with 22.61% and Dongli was the least contributor with 1.02%.And ammonia emission had strong spatial characteristics.
出处
《家畜生态学报》
北大核心
2016年第10期34-40,共7页
Journal of Domestic Animal Ecology
基金
国家科技支撑计划课题(2014BAC23B02)
天津市科技计划项目(13ZCZDSF14600)
环保部公益行业科研专项(201409014)
关键词
畜禽养殖
氨排放
排放因子
分布特征
livestock farming
ammonia emission
emission factor
distribution characteristics
