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我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度

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余龙飞, 李炳文, 张逸, 王章玮. 我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度[J]. 环境化学, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
引用本文: 余龙飞, 李炳文, 张逸, 王章玮. 我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度[J]. 环境化学, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
shu
YU Longfei, LI Bingwen, ZHANG Yi, WANG Zhangwei. Natural abundance of nitrogen isotopes for ammonium nitrogen in rainfall and throughfall at some sites in China[J]. Environmental Chemistry, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
Citation: YU Longfei, LI Bingwen, ZHANG Yi, WANG Zhangwei. Natural abundance of nitrogen isotopes for ammonium nitrogen in rainfall and throughfall at some sites in China[J]. Environmental Chemistry, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
shu

我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度

  • 1.

    中国科学院生态环境研究中心, 北京, 100085

  • 基金项目:

    中国科学院知识创新方向性项目(K2CX2-YW-GJ01)

    中国科学院国际合作项目(GJHZ1205)

    国家重大基础研究(973计划)项目(2005CB422206)资助.

Natural abundance of nitrogen isotopes for ammonium nitrogen in rainfall and throughfall at some sites in China

  • 1.

    Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China

  • Fund Project:

  • 摘要: 在我国7个站点采集了降雨和森林穿冠水样品,分析了铵态氮的同位素丰度.结果表明,各站点降雨中铵态氮δ15N的平均值为-8.67‰至-3.66‰,其中杭州近郊梅家坞降水样品中铵态氮δ15N平均值最低,贵州雷公山降雨样品中铵态氮δ15N平均值最高.城市穿冠水中铵态氮δ15N值要明显高于降雨,而郊区和背景地区穿冠水中铵态氮δ15N值略高于降雨,这可能是由于城市地区林冠层富集有更多的大气颗粒物并通过冲刷过程进入穿冠水所致,因为大气颗粒物中铵态氮通常富集N.
    Abstract: In this paper, rainfall and throughfall samples were sampled at seven sites in China, and the δ15N values of ammonium were analyzed. In rainfall, the mean δ15N values of ammonium ranged from -8.67‰ to -3.66‰. Among all the sites, the δ15N values of ammonium were lowest at MJW, and highest at LGS. Compared to the rainfall, the δ15N values of ammonium in throughfall were much higher at urban and suburb sites, but slightly higher at background and suburban sites. With more particulates accumulated in the canopy at urban areas, the scavenging of ammonium containing particulates from canopy by throughfall may be the cause for much higher δ15N values of ammonium in througfhfall, as the ammonium in particulates were believed to be enriched in N.
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  • 收稿日期:  2012-05-25
余龙飞, 李炳文, 张逸, 王章玮. 我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度[J]. 环境化学, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
引用本文: 余龙飞, 李炳文, 张逸, 王章玮. 我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度[J]. 环境化学, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
shu
YU Longfei, LI Bingwen, ZHANG Yi, WANG Zhangwei. Natural abundance of nitrogen isotopes for ammonium nitrogen in rainfall and throughfall at some sites in China[J]. Environmental Chemistry, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
Citation: YU Longfei, LI Bingwen, ZHANG Yi, WANG Zhangwei. Natural abundance of nitrogen isotopes for ammonium nitrogen in rainfall and throughfall at some sites in China[J]. Environmental Chemistry, 2013, 32(9): 1599-1603. doi: 10.7524/j.issn.0254-6108.2013.09.001
shu

我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度

  • 1. 中国科学院生态环境研究中心, 北京, 100085
  • 收稿日期:  2012-05-25
基金项目:

中国科学院知识创新方向性项目(K2CX2-YW-GJ01)

中国科学院国际合作项目(GJHZ1205)

国家重大基础研究(973计划)项目(2005CB422206)资助.

摘要: 在我国7个站点采集了降雨和森林穿冠水样品,分析了铵态氮的同位素丰度.结果表明,各站点降雨中铵态氮δ15N的平均值为-8.67‰至-3.66‰,其中杭州近郊梅家坞降水样品中铵态氮δ15N平均值最低,贵州雷公山降雨样品中铵态氮δ15N平均值最高.城市穿冠水中铵态氮δ15N值要明显高于降雨,而郊区和背景地区穿冠水中铵态氮δ15N值略高于降雨,这可能是由于城市地区林冠层富集有更多的大气颗粒物并通过冲刷过程进入穿冠水所致,因为大气颗粒物中铵态氮通常富集N.

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