• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Elevation alters ecosystem properties across temperate treelines globally
【24h】

Elevation alters ecosystem properties across temperate treelines globally

机译：高程改变了全球温带林线的生态系统特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Temperature is a primary driver of the distribution of biodiversity as well as of ecosystem boundaries(1,2). Declining temperature with increasing elevation in montane systems has long been recognized as a major factor shaping plant community biodiversity, metabolic processes, and ecosystem dynamics(3,4). Elevational gradients, as thermoclines, also enable prediction of long-term ecological responses to climate warming(5-7). One of the most striking manifestations of increasing elevation is the abrupt transitions from forest to treeless alpine tundra(8). However, whether there are globally consistent above-and belowground responses to these transitions remains an open question(4). To disentangle the direct and indirect effects of temperature on ecosystem properties, here we evaluate replicate treeline ecotones in seven temperate regions of the world. We find that declining temperatures with increasing elevation did not affect tree leaf nutrient concentrations, but did reduce ground-layer community-weighted plant nitrogen, leading to the strong stoichiometric convergence of ground-layer plant community nitrogen to phosphorus ratios across all regions. Further, elevation-driven changes in plant nutrients were associated with changes in soil organic matter content and quality (carbon to nitrogen ratios) and microbial properties. Combined, our identification of direct and indirect temperature controls over plant communities and soil properties in seven contrasting regions suggests that future warming may disrupt the functional properties of montane ecosystems, particularly where plant community reorganization outpaces treeline advance.
机译：温度是生物多样性和生态系统边界分布的主要驱动力（1,2）。长期以来，人们一直认为山地系统中温度随海拔升高而下降是影响植物群落生物多样性，代谢过程和生态系统动态的主要因素（3,4）。上升梯度作为温跃线也可以预测对气候变暖的长期生态响应（5-7）。海拔升高最明显的表现之一是从森林到无树的高山苔原的突然转变（8）。然而，对于这些过渡是否有全球统一的上下反应仍然是一个悬而未决的问题（4）。为了弄清温度对生态系统特性的直接和间接影响，在这里我们评估了世界上七个温带地区的复制林线过渡带。我们发现随着海拔的升高温度下降并不会影响树叶的养分含量，但确实降低了地上层群落加权的植物氮，导致了所有地区地上层植物群落氮磷比率的化学计量上的强收敛性。此外，海拔驱动的植物养分变化与土壤有机质含量和质量（碳氮比）和微生物特性的变化有关。结合我们对七个相反区域植物群落和土壤特性的直接和间接温度控制的识别，表明未来的变暖可能会破坏山地生态系统的功能特性，尤其是在植物群落重组超过林线发展的地方。

著录项

  • 来源
    《Nature》 |2017年第7639期|91-95|共5页
  • 作者

    Mayor Jordan R.; Sanders Nathan J.; Classen Aimee T.; Bardgett Richard D.; Clement Jean-Christophe; Fajardo Alex; Lavorel Sandra; Sundqvist Maja K.; Bahn Michael; Chisholm Chelsea; Cieraad Ellen; Gedalof Zeev; Grigulis Karl; Kudo Gaku; Oberski Daniel L.; Wardle David A.;

  • 作者单位

    Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90187 Umea, Sweden;

    Univ Copenhagen, Ctr Macroecol Evolut & Climate, Nat Hist Museum Denmark, DK-2100 Copenhagen O, Denmark|Univ Vermont, Rubenstein Sch Environm & Nat Resources, Burlington, VT 05405 USA;

    Univ Copenhagen, Ctr Macroecol Evolut & Climate, Nat Hist Museum Denmark, DK-2100 Copenhagen O, Denmark|Univ Vermont, Rubenstein Sch Environm & Nat Resources, Burlington, VT 05405 USA;

    Rocky Mt Biol Labs, POB 519, Crested Butte, CO 81224 USA|Univ Manchester, Sch Earth & Environm Sci, Oxford Rd, Manchester M13 9PT, Lancs, England;

    Univ Grenoble Alpes, CNRS UMR 5553, Laboratoire dEcol Alpine, CS 40700, F-380589 Grenoble, France|Univ Savoie Mont Blanc, UMR 0042, CARRTEL, FR-73376 Le Bourget Du Lac, France;

    Univ Austral Chile, Ctr Invest Ecosistemas Patagonia CIEP R10c1003, Coyhaique 5951601, Chile;

    Umea Univ, S-90187 Umea, Sweden;

    Univ Innsbruck, Inst Ecol, A-6020 Innsbruck, Austria;

    Univ Copenhagen, Ctr Macroecol Evolut & Climate, Nat Hist Museum Denmark, DK-2100 Copenhagen O, Denmark;

    Landcare Res, POB 69040, Lincoln 7640, New Zealand|Leiden Univ, Inst Environm Sci, Einsteinweg 2, NL-2333 CC Leiden, Netherlands;

    Univ Guelph, Dept Geog, Guelph, ON N1G 2W1, Canada;

    Hokkaido Univ, Fac Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan;

    Univ Utrecht, Dept Methodol & Stat, NL-3584 CH Utrecht, Netherlands;

    Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90187 Umea, Sweden|Nanyang Technol Univ, Asian Sch Environm, 50 Nanyang Ave, Singapore 639798, Singapore;

  • 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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号