Characteristics of Soil NO Emissions in the Yangtze River Delta Region for Year 2018

被引：0

作者：

Liao J.-Q. ^{[1
]}

Xue J. ^{[1
]}

Wang W.-J. ^{[1
]}

Zhu Y.-H. ^{[1
]}

Zhu A.-S. ^{[1
]}

Huang L. ^{[1
]}

Wang Y.-J. ^{[1
]}

Li L. ^{[1
]}

机构：

[1] Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai

来源：

Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 06期

关键词：

Anthropogenic NO[!sub]x[!/sub; BDSNP model; Nitrogen fertilizer; Soil NO; Yangtze River Delta;

D O I：

10.13227/j.hjkx.202109015

中图分类号：

学科分类号：

摘要：

Soil NO emissions represent an important source of atmospheric nitric oxide (NO) and play an important role in atmospheric chemistry. Based on the latest BDSNP algorithm, this study estimated the soil NO emissions over the Yangtze River Delta region for the year 2018 and further analyzed the associated temporal and spatial variations and uncertainties. The results showed that the annual soil NO emissions in 2018 over the YRD region was 213.6 kt, accounting for 7.3% of the total anthropogenic NOx emissions. Areas with high emissions were mainly concentrated in northern Anhui Province and most parts of Jiangsu Province. In terms of monthly variations, soil NO emissions peaked in June, accounting for 19.9% of the annual emissions and 19.7% of anthropogenic NOx emissions in June. In terms of daily variations, soil NO emissions peaked around 16:00 and accounted for 5.5% of daily emissions. Soil NO emissions came from three components: soil background, nitrogen fertilizer application, and nitrogen deposition. Nitrogen fertilizer application was the main source of soil NO emissions, accounting for up to 77.8%. With the in-depth reduction in NOx emissions from motor vehicles and industries, the importance of soil NO emissions will become increasingly prominent. © 2022, Science Press. All right reserved.

引用

页码：3357 / 3364

页数：7

共 45 条

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