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首页> 外文期刊>Environmental Pollution >Year-round grazing to counteract effects of atmospheric nitrogen deposition may aggravate these effects
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Year-round grazing to counteract effects of atmospheric nitrogen deposition may aggravate these effects

机译：全年放牧以抵消大气氮沉积的影响可能会加剧这些影响

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摘要

Excessive nitrogen input in natural ecosystems is a major threat to biodiversity. A coastal dune area near Amsterdam in the Netherlands suffers from high atmospheric nitrogen deposition affecting sensitive habitats such as fixed coastal dunes with herbaceous vegetation ('grey dunes'). To mitigate its effect year round grazing was applied from 2007 until 2012. In winter, when natural food supply is low, the cattle received supplementary hay that caused additional inputs of nitrogen. Estimates based on nitrogen contents of hay, as well as of manure, showed the input through winter feeding (c. 3-14 kg N ha~(-1).y~(-1)) is in the same order of magnitude as both the actual deposition (c. 17 kg N ha~(-1).y~(-1)) and the critical load for a number of herbaceous habitat types (10-15 kg N ha~(-1).y~(-1)). Locally, the effect of winter feeding adds to the effect of nitrogen redistribution within the area caused by the cattle's terrain usage. We conclude that winter feeding may aggravate effects of atmospheric nitrogen deposition.
机译：自然生态系统中过量的氮输入是对生物多样性的主要威胁。荷兰阿姆斯特丹附近的沿海沙丘地区大气氮含量高，影响了敏感的生境，例如具有草本植物的固定沿海沙丘（“灰色沙丘”）。为了减轻这种影响，从2007年至2012年全年进行放牧。在冬季，由于天然食物供应不足，牲畜获得了补充干草，这导致了额外的氮输入。根据干草和肥料中的氮含量进行的估算表明，冬季喂养的投入量（约3-14 kg N ha〜（-1）.y〜（-1））与实际沉积量（c。17 kg N ha〜（-1）.y〜（-1））和临界负荷对许多草本生境类型（10-15 kg N ha〜（-1）.y〜 （-1））。就局部而言，冬季饲养的影响增加了由牛的地形使用引起的区域内氮再分配的影响。我们得出结论，冬季喂养可能加剧大气氮沉降的影响。

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  • 来源
    《Environmental Pollution》 |2014年第12期|226-231|共6页
  • 作者

    H.F. van Dobben; G.W.W. Wamelink; A. Klimkowska; P.A. Slim; M. van Til;

  • 作者单位

    Alterra, Wageningen University and Research Centre, POB 47, NL-6700 AA Wageningen, The Netherlands;

    Alterra, Wageningen University and Research Centre, POB 47, NL-6700 AA Wageningen, The Netherlands;

    Alterra, Wageningen University and Research Centre, POB 47, NL-6700 AA Wageningen, The Netherlands;

    Alterra, Wageningen University and Research Centre, POB 47, NL-6700 AA Wageningen, The Netherlands;

    Waternet, POB 94307,1090 GJ Amsterdam, The Netherlands;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Vegetation management; Manure; Nitrogen; Eutrophication; Natura 2000; Grey dune;

    机译：植被管理;肥料;氮;富营养化Natura 2000;灰色沙丘;

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