An evaluation of atmospheric Nr pollution and deposition in North China after the Beijing Olympics

Luo, Xiaosheng; Liu, Ping; Tang, Aohan; Liu, J.Y.; Zong, Xumei; Zhang, Q.; Kou, Changlin; Zhang, L.J.; Fowler, D.; Fangmeier, Andreas; Christie, Peter; Zhang, F.S.; Liu, X.J.

doi:10.1016/j.atmosenv.2013.03.054

Cited by 43 publications

(24 citation statements)

References 40 publications

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“…The NH 3 deposition velocities were on average 0.5–0.6 cm s −1 for cropland, pasture and grassland around the feedlot. These deposition velocities are comparable with those published mean NH 3 deposition velocities for cropland (0.4–0.8 cm s −1 )2829, pasture (~0.8 cm s −1 )30 and grassland surfaces (0.5–1.0 cm s −1 )28. Therefore, though there are some uncertainties, the calculated NH 3 deposition fluxes in this study are still in a reasonable range.…”

Section: Discussionsupporting

confidence: 90%

Ammonia deposition in the neighbourhood of an intensive cattle feedlot in Victoria, Australia

Shen

Chen

Bai

et al. 2016

Sci Rep

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Intensive cattle feedlots are large emission sources of ammonia (NH3), but NH3 deposition to the landscape downwind of feedlots is not well understood. We conducted the first study in Australia to measure NH3 dry deposition within 1 km of a commercial beef cattle feedlot in Victoria. NH3 concentrations and deposition fluxes decreased exponentially with distance away from the feedlot. The mean NH3 concentrations decreased from 419 μg N m−3 at 50 m to 36 μg N m−3 at 1 km, while the mean NH3 dry deposition fluxes decreased from 2.38 μg N m−2 s−1 at 50 m to 0.20 μg N m−2 s−1 at 1 km downwind from the feedlot. These results extrapolate to NH3 deposition of 53.9 tonne N yr−1 in the area within 1 km from the feedlot, or 67.5 kg N ha−1 yr−1 as an area-weighted mean, accounting for 8.1% of the annual NH3-N emissions from the feedlot. Thus NH3 deposition around feedlots is a significant nitrogen input for surrounding ecosystems. Researches need be conducted to evaluate the impacts of NH3 deposition on the surrounding natural or semi-naturals ecosystems and to reduce N fertilizer application rate for the surrounding crops by considering nitrogen input from NH3 deposition.

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Section: Discussionsupporting

confidence: 90%

Ammonia deposition in the neighbourhood of an intensive cattle feedlot in Victoria, Australia

Shen

Chen

Bai

et al. 2016

Sci Rep

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“…This may be subject to medium-and long-term transport and thus supports the evidence for very high atmospheric N deposition rates measured by our group not only in Beijing Municipality but also in more outlying regions of the NCP, including those with less intensively managed animal husbandry operations (Luo et al, 2013(Luo et al, , 2014.…”

Section: Secondary Inorganic Pm Concentrations and Emissionssupporting

confidence: 68%

“…The North China Plain (NCP), one of the most intensive livestock production regions in the country, contributes about 30% of national animal products (Zhang et al, 2010). Previous studies by some of the present authors on NH 3 emission and deposition confirm that the NCP is experiencing high levels of NH 3 pollution caused by livestock production and application of mineral nitrogen (N) fertilizers (Shen et al, 2011;Liu et al, 2013;Luo et al, 2013). According to Zhang et al (2010), on the NCP pig husbandry is the biggest livestock NH 3 contributor, accounting for 60% of total livestock emissions.…”

Section: Situation In China/on the North China Plainmentioning

confidence: 99%

Concentrations and Emissions of Particulate Matter from Intensive Pig Production at a Large Farm in North China

Zheng

Meng

et al. 2016

Aerosol Air Qual. Res.

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Particulate matter (PM) pollution from pig farms is of increasing environmental concern due to the rapid development of intensively managed pig farms worldwide. However, information on this topic is scarce in China to date. Therefore a two-year study to monitor the dynamics of total suspended particles (TSP) and particulate matter with diameter less than 10 µm (PM 10 ) and their soluble ions was conducted at an industrial pig farm near Beijing. In total, two fattening pig houses were sampled during three fattening periods from 2010 to 2011. Daily mean indoor TSP and PM 10 concentrations were 1.85 and 0.63 mg m -3 on average.

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“…The North China Plain (NCP) is a highly populated region with intensive agricultural production as well as heavy industry. The region has been affected by severe haze and photochemical pollution in recent years (Guo et al, 2010;Wang et al, 2010;Luo et al, 2013). Covering only 3.3 % of the national area, the NCP region provides 40 and 25 % of China's wheat and corn production.…”

Section: Introductionmentioning

confidence: 99%

Role of ambient ammonia in particulate ammonium formation at a rural site in the North China Plain

et al. 2018

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Abstract. The real-time measurements of NH 3 and trace gases were conducted, in conjunction with semi-continuous measurements of water-soluble ions in PM 2.5 at a rural site in the North China Plain (NCP) from May to September 2013 in order to better understand chemical characteristics of ammonia and the impact of secondary ammonium aerosols on formation in the NCP. Extremely high NH 3 and NH + 4 concentrations were observed after a precipitation event within 7-10 days following urea application. Elevated NH 3 levels coincided with elevated NH + 4 , indicating that NH 3 likely influenced particulate ammonium mass. For the sampling period, the average conversion / oxidation ratios for NH + 4 (NHR), SO 2− 4 (SOR), and NO − 3 (NOR) were estimated to be 0.30, 0.64, and 0.24, respectively. The increased NH 3 concentrations, mainly from agricultural activities and regional transport, coincided with the prevailing meteorological conditions. The high NH 3 level with NHR of about 0.30 indicates that the emission of NH 3 in the NCP is much higher than needed for aerosol acid neutralisation, and NH 3 plays an important role in the formation of secondary aerosols as a key neutraliser. The hourly data obtained were used to investigate gas-aerosol partitioning characteristics using the thermody-

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An evaluation of atmospheric Nr pollution and deposition in North China after the Beijing Olympics

Cited by 43 publications

References 40 publications

Ammonia deposition in the neighbourhood of an intensive cattle feedlot in Victoria, Australia

Ammonia deposition in the neighbourhood of an intensive cattle feedlot in Victoria, Australia

Concentrations and Emissions of Particulate Matter from Intensive Pig Production at a Large Farm in North China

Role of ambient ammonia in particulate ammonium formation at a rural site in the North China Plain

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