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Modeled subalpine plant community response to climate change and atmospheric nitrogen deposition in Rocky Mountain National Park, USA

机译:美国落基山国家公园模拟高山植物群落对气候变化和大气氮沉降的响应

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摘要

To evaluate potential long-term effects of climate change and atmospheric nitrogen (N) deposition on subalpine ecosystems, the coupled biogeochemical and vegetation community competition model ForSAFE-Veg was applied to a site at the Loch Vale watershed of Rocky Mountain National Park, Colorado. Changes in climate and N deposition since 1900 resulted in pronounced changes in simulated plant species cover as compared with ambient and estimated future community composition. The estimated critical load (CL) of N deposition to protect against an average future (2010-2100) change in biodiversity of 10% was between 1.9 and 3.5 kg N ha~(-1) yr~(-1). Results suggest that the CL has been exceeded and vegetation at the study site has already undergone a change of more than 10% as a result of N deposition. Future increases in air temperature are forecast to cause further changes in plant community composition, exacerbating changes in response to N deposition alone.
机译:为了评估气候变化和大气氮(N)沉积对亚高山生态系统的潜在长期影响,将生物地球化学和植被群落竞争模型ForSAFE-Veg应用于科罗拉多州落基山国家公园的Loch Vale流域。自1900年以来,气候和氮沉降的变化导致模拟植物物种覆盖率与周围环境和估计的未来社区组成相比发生了明显变化。为防止未来生物多样性的平均未来变化(2010-2100)达到10%,估计的氮沉降临界负荷(CL)在1.9至3.5 kg N ha〜(-1)yr〜(-1)之间。结果表明,由于氮沉降,已经超过了CL,研究地点的植被已经发生了超过10%的变化。预计未来气温的升高会引起植物群落组成的进一步变化,从而加剧仅对氮沉降的响应。

著录项

  • 来源
    《Environmental Pollution》 |2014年第4期|55-64|共10页
  • 作者单位

    E&S Environmental Chemistry Inc., P.O. Box 609, Corvallis, OR 97339, USA;

    Belyazid Consulting & Communication AB, Stationsviigen 13, 517 34 Bollebygd, Sweden;

    E&S Environmental Chemistry Inc., P.O. Box 609, Corvallis, OR 97339, USA;

    Biogeochemistry and Systems Analysis, Chemical Engineering, Lund University, SE-221 00 Lund, Sweden;

    Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA;

    National Park Service, Air Resources Division, Denver, CO 80225, USA;

  • 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

    Plant; Biodiversity; Subalpine; Nitrogen; Critical load; Climate;

    机译:厂;生物多样性;亚高山氮;临界负荷;气候;
  • 入库时间 2022-08-17 13:27:39

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