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Issue 11, 2011
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Atmospheric NO2 and NH3 deposition into a typical agro-ecosystem in Southeast China

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Abstract

The dry deposition of atmospheric nitrogen (including NO2 and NH3) into a typical agro-ecosystem in Southeast China during 2006–2007 was estimated. Results indicated that the dry deposition velocities of NO2 and NH3 ranged from 0.04–0.24 cm s−1 and 0.09–0.47 cm s−1, respectively. The higher values appeared in the non-crop growing period. Concentrations of atmospheric NO2 and NH3 ranged from 24.64–104.10 μgN m−3 and 14.40–389.6 μgN m−3, respectively. Variation of the NH3 mixing ratio showed a clear double-peak. NO2 and NH3 deposition fluxes were 74.68–80.75 kgN ha−1, which was equivalent to 162.4 and 175.5 kg ha−1 of urea applied in 2006–2007. The N deposition fluxes were 13.91–40.38 and 5.33–22.73 kgN ha−1 in peanut and rice growing periods, accounting for 8.18%–40.38% and 2.13%–23.06% of N fertilizer usages, respectively. NO2 and NH3 deposition were significant for the red soil farmland.

Graphical abstract: Atmospheric NO2 and NH3 deposition into a typical agro-ecosystem in Southeast China

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Publication details

The article was received on 30 Mar 2011, accepted on 31 Aug 2011 and first published on 10 Oct 2011


Article type: Paper
DOI: 10.1039/C1EM10284B
J. Environ. Monit., 2011,13, 3216-3221

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    Atmospheric NO2 and NH3 deposition into a typical agro-ecosystem in Southeast China

    J. Cui, J. Zhou, H. Yang, Y. Peng, Y. He and A. Chan, J. Environ. Monit., 2011, 13, 3216
    DOI: 10.1039/C1EM10284B

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