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[Inventory and Distribution Characteristics of Anthropogenic Ammonia Emissions in Zhejiang Province from 2008 to 2018].

Authors :
Fang LJ
Yang YQ
Ye GQ
Source :
Huan jing ke xue= Huanjing kexue [Huan Jing Ke Xue] 2022 Oct 08; Vol. 43 (10), pp. 4380-4391.
Publication Year :
2022

Abstract

As ammonia is the main component of PM <subscript>2.5</subscript> , long time series of ammonia emission characteristics are an important basis for studying the historical causes of PM <subscript>2.5</subscript> pollution. In this study, the activity data of various anthropogenic ammonia emissions from 11 cities were collected in Zhejiang. The anthropogenic ammonia emissions inventory in Zhejiang was established using emission factors, and then a 1 km×1 km spatial grid distribution was carried out using ArcGIS software. The results showed that from 2008 to 2018, the ammonia emissions from anthropogenic sources in Zhejiang exhibited a downward trend, with an average annual decline rate of approximately 3.97%. The ammonia emissions were 108.52 kt in 2018, and the emission intensity was 1.03 t·km <superscript>-2</superscript> , in which there was 90.02 kt from agricultural sources and 18.50 kt from non-agricultural sources. The ammonia emissions of Hangzhou, Jiaxing, and Wenzhou were higher than those of the other cities, accounting for 14.72%, 11.86%, and 11.80% of the total ammonia emissions, respectively. The spatial distribution characteristics showed that ammonia emissions were mainly distributed in the northern part of Zhejiang, showing an emission trend of "high in the north and low in the south." Uncertainty analysis showed that the simulated average value of ammonia emissions was 108.37 kt, and the uncertainty range in the 95% confidence interval was -5.40%-5.60%.

Details

Language :
Chinese
ISSN :
0250-3301
Volume :
43
Issue :
10
Database :
MEDLINE
Journal :
Huan jing ke xue= Huanjing kexue
Publication Type :
Academic Journal
Accession number :
36224124
Full Text :
https://doi.org/10.13227/j.hjkx.202112258