Abstract Few related studies have been carried out for northwest China's the inland, although the increasing inorganic reactive nitrogen (Nr) deposition and severe air pollution in China have attracted considerable attention. Based on eight-year measurements of the concentrations of NH3, HNO3, particulate (p) NH4+, pNO3−, and NO2 in the air and inorganic nitrogen (NH4+, NO3−) in the precipitation at a rural site in Wuwei, Gansu Province, we quantified the dry and bulk/wet Nr deposition fluxes and analyzed their temporal trends in combination with air pollution data (2015–2018). The concentrations of the single Nr species in the air did not exhibit significant seasonal variations, except for that of pNO3− which were the highest in summer and the lowest in winter. The average annual total Nr (dry + bulk) deposition was 27.2 ± 6.7 kg N ha−1 with a significant (p

中文翻译：

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2011-2018年西北农村地区大气氮沉降增强

摘要 我国西北内陆地区无机活性氮（Nr）沉降的增加和严重的空气污染引起了人们的广泛关注，但相关研究很少。基于对甘肃武威某农村地区大气中NH3、HNO3、颗粒物（p）NH4+、pNO3−、NO2浓度和降水中无机氮（NH4+、NO3−）浓度的8年测量，我们量化了干和散装/湿 Nr 沉积通量，并结合空气污染数据（2015-2018 年）分析了它们的时间趋势。除了 pNO3− 夏季最高，冬季最低外，空气中单一 Nr 物种的浓度没有表现出明显的季节性变化。年平均总 Nr（干 + 散装）沉积为 27.2 ± 6。