title: Atmospheric NO2 and NH3 deposition into a typical agro-ecosystem in Southeast China.
abstract: The dry deposition of atmospheric nitrogen (including NO(2) and NH(3)) into a typical agro-ecosystem in Southeast China during 2006-2007 was estimated. Results indicated that the dry deposition velocities of NO(2) and NH(3) 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 NO(2) and NH(3) ranged from 24.64-104.10 μgN m(-3) and 14.40-389.6 μgN m(-3), respectively. Variation of the NH(3) mixing ratio showed a clear double-peak. NO(2) and NH(3) 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. NO(2) and NH(3) deposition were significant for the red soil farmland.
authors: Red soil ecological experiment station, Chinese Academy of Sciences, Liujiazhan plantation, Yingtan, P.R. China 335211.
authors: Jian
authors: J
authors: Cui
authors: Jing
authors: J
authors: Zhou
authors: Hao
authors: H
authors: Yang
authors: Ying
authors: Y
authors: Peng
authors: Yuanqiu
authors: Y
authors: He
authors: Andy
authors: A
authors: Chan
mesh_terms: D000383:Agriculture; D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis / Q000706:statistics & numerical data*; D000641:Ammonia / Q000032:analysis*; D001272:Atmosphere / Q000032:analysis / Q000737:chemistry*; D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring; D008956:Models, Chemical; D009585:Nitrogen Dioxide / Q000032:analysis*; D012621:Seasons; D014887:Weather
chemical_list: D000393:Air Pollutants; D000641:Ammonia; D009585:Nitrogen Dioxide