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Boron Dissolved and Participate Atmospheric Inputs to a Forest Ecosystem (Northeastern France)

机译:硼溶解并参与森林生态系统的大气输入(法国东北部)

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摘要

Boron concentrations and isotopic compositions of atmospheric dust and dissolved depositions were monitored over a two-year period (2012-2013) in the forest ecosystem of Montiers (Northeastern France). This time series allows the determination of the boron atmospheric inputs to this forest ecosystem and contributes to refine our understanding of the sources and processes that control the boron atmospheric cycle. Mean annual dust and dissolved boron atmospheric depositions are comparable in size (13 g.ha(-1).yr(-1) and 16 g.ha(-1).yr(-1), respectively), which however show significant intra- and interannual variations. Boron isotopes in dust differ from dissolved inputs, with an annual mean value of +1 and +18 for, respectively. The notable high boron contents (190-390 mu g.g(1)) of the dust samples are interpreted as resulting from localized spreading of boron-rich fertilizers, thus indicating a significant local impact of regional agricultural activities. Boron isotopes in dissolved depositions show a clear seasonal trend. The absence of correlation with marine cyclic solutes contradicts a control of atmospheric boron by dissolution of seasalts. Instead, the boron data from this study are consistent with a Rayleigh-like evolution of the atmospheric gaseous boron reservoir with possible but limited anthropogenic and/or biogenic contributions.
机译:在两年(2012年至2013年)的Montiers(法国东北部)森林生态系统中,监测了大气尘埃和溶解沉积物的硼浓度和同位素组成。这个时间序列可以确定向该森林生态系统的硼大气输入,并有助于加深我们对控制硼大气循环的来源和过程的了解。平均年尘量和溶解硼大气沉积物的大小相当(分别为13 g.ha(-1).yr(-1)和16 g.ha(-1).yr(-1)),但显示出显着性年内和年际变化。尘埃中的硼同位素与溶解的投入物不同,其年平均值分别为+1和+18。粉尘样品中明显的高硼含量(190-390μg.g(1))被解释为富硼肥料的局部扩散所致,因此表明该地区农业活动对当地的影响很大。溶解沉积物中的硼同位素显示出明显的季节性趋势。与海洋环溶质的不相关性与通过溶解海盐控制大气中的硼相矛盾。取而代之的是,这项研究中的硼数据与大气气态硼储层的瑞利式演化相一致,可能有但有限的人为和/或生物成因贡献。

著录项

  • 来源
    《Environmental Science & Technology》 |2017年第24期|14038-14046|共9页
  • 作者单位

    INRA, BEF, Ctr Nancy, F-54280 Seichamps, France;

    INRA, BEF, Ctr Nancy, F-54280 Seichamps, France;

    INRA, BEF, Ctr Nancy, F-54280 Seichamps, France;

    Andra Ctr Meuse Haute Marne, F-55290 Bure, France;

    Univ Strasbourg, CNRS, LHyGeS, Strasbourg, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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