...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Biodiversity impacts ecosystem productivity as much as resources, disturbance, or herbivory
【24h】

Biodiversity impacts ecosystem productivity as much as resources, disturbance, or herbivory

机译：生物多样性对生态系统生产力的影响与资源，干扰或草食一样多

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

Although the impacts of the loss of biodiversity on ecosystem functioning are well established, the importance of the loss of biodiversity relative to other human-caused drivers of environmental change remains uncertain. Results of 11 experiments show that ecologically relevant decreases in grassland plant diversity influenced productivity at least as much as ecologically relevant changes in nitrogen, water, CO_2, herbivores, drought, or fire. Moreover, biodiversity became an increasingly dominant driver of ecosystem productivity through time, whereas effects of other factors either declined (nitrogen addition) or remained unchanged (all others), in particular, a change in plant diversity from four to 16 species caused as large an increase in productivity as addition of 54 kg·ha·(-1)·y~(-1) of fertilizer N, and was as influential as removing a dominant herbivore, a major natural drought, water addition, and fire suppression. A change in diversity from one to 16 species caused a greater biomass increase than 95 kg·ha~(-1)·y~(-1) of N or any other treatment. Our conclusions are based on >7,000 productivity measurements from 11 long-term experiments (mean length, ～ 13 y) conducted at a single site with species from a single regional species pool, thus controlling for many potentially confounding factors. Our results suggest that the loss of biodiversity may have at least as great an impact on ecosystem functioning as other anthropogenic drivers of environmental change, and that use of diverse mixtures of species may be as effective in increasing productivity of some biomass crops as fertilization and may better provide ecosystem services.
机译：尽管生物多样性丧失对生态系统功能的影响已得到充分证实，但是生物多样性丧失相对于其他人为环境变化驱动因素的重要性仍然不确定。 11个实验的结果表明，草原植物多样性与生态相关的减少对生产力的影响至少与氮，水，CO_2，草食动物，干旱或火的生态相关变化一样多。此外，随着时间的流逝，生物多样性已成为生态系统生产力日益增长的主要驱动力，而其他因素的影响则有所下降（添加氮）或保持不变（所有其他因素），尤其是植物多样性从4种变为16种，添加54 kg·ha·（-1）·y〜（-1）的氮肥可提高生产率，并且与去除主要的草食动物，主要的自然干旱，加水和灭火有关。从1种到16种的多样性变化导致氮的生物量增加量大于95 kg·ha〜（-1）·y〜（-1）N或任何其他处理方式。我们的结论是基于对来自单个区域物种库的物种在一个地点进行的11个长期实验（平均长度，约13 y）进行的7,000多次生产力测量得出的，因此控制了许多潜在的混杂因素。我们的结果表明，生物多样性的丧失可能至少对人类生态系统的影响与环境变化的其他人为驱动因素一样大，并且使用多种物种的混合物对提高某些生物量作物的生产力可能与施肥一样有效，并且可能更好地提供生态系统服务。

著录项

  • 来源
  • 作者

    David Tilman; Peter B. Reich; Forest lsbell;

  • 作者单位

    Departmenf of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN 55108 Bren School of the Environment, University of California, Santa Barbara, CA 93106;

    Department of Forest Resources, University of Minnesota Twin Cities, St. Paul, MN 55108 Hawkesbury Institute for the Environment, University of Western Sydney, Richmond 2753, Australia;

    Departmenf of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN 55108;

  • 收录信息 美国《科学引文索引》(SCI);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

    biogeochemistry; community ecology;

    机译：生物地球化学社区生态;

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