Biodiversity and the Productivity, Stability and Sustainability of Prairie Ecosystems

生物多样性与草原生态系统的生产力、稳定性和可持续性

• 批准号: 9629566
• 负责人: David Tilman
• 金额: $ 50.7万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629566&HistoricalAwards=false
• 关键词: Biodiversity; Productivity; Stability; Sustainability; Prairie

9629566 Tilman Biodiversity and the Productivity, Stability, and Sustainability of Prairie Ecosystems Because of deforestation, urbanization, and other expansions of human land use, species are going extinct at unprecedented rates. This has raised concerns about the possible long-term effects of the loss of species on the functioning of Earth's ecosystems. Although there are many hypotheses about such potential effects, these ideas have almost never been directly tested under field conditions. Such tests are important not just to resolve the scientific debate, but to provide society with information on the likely ecological impacts of the loss of biodiversity. This research will maintain and monitor a uniquely powerful field experiment in which there is direct experimental control of plant biodiversity in 342 large prairie-like plots. This work will determine if and how the productivity of these ecosystems depends on biodiversity. The effects of biodiversity will also be studied on the sustainability of soil fertility, and on ecosystem stability. This will provide a rigorous test of the hypothesized dependencies of ecosystem functioning on biodiversity.

小行星9629566 生物多样性与草原生态系统的生产力、稳定性和可持续性 由于森林砍伐、城市化和人类土地使用的其他扩张，物种正以前所未有的速度灭绝。 这引起了人们对物种丧失可能对地球生态系统的运作产生长期影响的关切。 虽然有许多关于这种潜在影响的假设，但这些想法几乎从未在野外条件下直接测试过。 这种测试不仅对解决科学争论很重要，而且对向社会提供有关生物多样性丧失可能造成的生态影响的信息也很重要。 这项研究将维持和监测一个独特的强大的实地实验，其中有直接的实验控制植物生物多样性在342个大草原样地。 这项工作将确定这些生态系统的生产力是否以及如何取决于生物多样性。 还将研究生物多样性对土壤肥力可持续性和生态系统稳定性的影响。 这将为生态系统功能对生物多样性的假设依赖性提供严格的检验。