2008~2020年京津冀及周边地区人为源氨排放清单研究
Inventory of anthropogenic ammonia emissions in Beijing-Tianjin-Hebei and its surrounding areas from 2008 to 2020
-
摘要: 氨是大气细颗粒物PM2.5的主要组成部分,长时间序列的氨排放清单是研究PM2.5污染历史成因的重要基础. 为探究京津冀及周边地区人为源氨排放来源和排放特征,根据北京市、天津市、河北省、山西省、山东省和河南省各类氨排放活动水平数据,采用排放因子法,建立了京津冀及周边地区氨排放清单。结果表明:①2008~2020年京津冀及周边地区氨排放量总体呈现下降趋势,从3699.92 kt下降到3252.34 kt. 农业源是主要贡献源,占总排放量93.37%~94.52%,介于3036.68 ~3616.46 kt;非农业源介于209.99~232.38 kt.②2020年,河南省氨排放量最大为1113.82 kt,占研究区氨排放总量34.25%,其次为山东省、河北省和山西省,分别占比31.49%、23.74%和8.37%.③2020年,畜禽养殖占氨排放总量58.43%,蛋鸡、羊、肉牛和肉羊是研究区主要氨排放源,占畜禽养殖氨排放总量30.61%、13.92%、12.35%和12.14%. 氮肥施用占氨排放总量32.50%,尿素占氮肥施用源氨排放总量68.81%,其次为三元素复合肥(18.19%)。④北京、天津和其他省会城市的氨排放强度较高,高值区分布具有明显空间差异,主要在太行山脉东侧沿线的中部地区,研究区北部、西部和南部环城市带氨排放强度相对较小。Abstract: Ammonia was the main component of PM2.5, the long time series of ammonia emission characteristics was an important basis for studying the historical causes of PM2.5 pollution. According to the activity data of various anthropogenic ammonia emission sources in Beijing, Tianjin, Hebei, Shanxi, Shandong and Henan provinces and emission factors, an ammonia emission inventory of Beijing-Tianjin-Hebei and surrounding areas was established.
The results showed that ammonia emissions in Beijing-Tianjin-Hebei and its surrounding areas generally showed a downward trend, from 3699.92 kt to 3252.34 kt from 2008 to 2020. Locally, it showed a rising and then falling trend, with an average annual growth rate of 1.61% in ammonia emissions from 2008 to 2012; next few years, the average annual decline rate was 3.69%. Agricultural sources were the main contributors, accounting for 93.37% to 94.52% of total emissions, ranging from 3036.68 to 3616.46 kt; non-agricultural sources ranged from 209.99 to 232.38 kt. In 2020, the largest ammonia emission in Henan Province was 1113.82 kt, accounting for 34.25% of total ammonia emission,followed by Shandong, Hebei and Shanxi Province, with 1024.04 kt, 772.23 kt and 272.25 kt respectively, resulting in 31.49%, 23.74% and 8.37%. Livestock accounted for 58.43% of total ammonia emissions, hen, sheep, beef and goat with annual emissions of 581.73, 264.46, 234.63 and 230.71 kt respectively, accounting for 30.61%, 13.92%, 12.35% and 12.14% of the emissions from livestock. Nitrogen fertilizer application was the second-largest emission source with 32.50% of total ammonia emissions, and urea accounted for 68.81% of the emissions from nitrogen fertilizer application sources, followed by three-element compound fertilizer (18.19%). Ammonia emissions were mainly distributed in Beijing and Tianjin, scattered in other provinces. The high value areas had obvious spatial characteristics, mainly in the central region along the eastern side of the Taihang Mountains.
点击查看大图
计量
- 文章访问数: 185
- HTML全文浏览量: 15
- PDF下载量: 31
- 被引次数: 0