Carbon and Energy Flow and Plant Community Response to Climate Change in Peatlands

泥炭地碳和能量流以及植物群落对气候变化的响应

• 批准号: 9707426
• 负责人: Scott Bridgham
• 金额: $ 120万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707426&HistoricalAwards=false
• 关键词: Carbon; Energy; Flow; Plant; Community

9707426 Bridgham The aims of this research are to investigate interactions between plant community composition, whole-ecosystem C budgets, and energy balance in northern peatlands. The central hypothesis of the research is that climate forcing of heat loading and water table depth will determine plant community and ecosystem structure, which in turn will have a feedback effect on the energy budget of the system. The research plan involves a continuation of ongoing research in a unique series of whole-system microcosm experiments that include manipulations of temperature and water regimes. Processes to measured include the major carbon, water and energy fluxes, which will be incorporated into an ecosystem simulation model. Understanding the feedbacks and interactions among the processes to be studied are a high priority not only in the arena of global change but also in the broader arena of biodiversity/community structure effects on ecosystem functions. The site of the research is in northern Minnesota.

9707426 Bridgham这项研究的目的是调查北部泥炭地植物群落组成、全生态系统碳收支和能量平衡之间的相互作用。研究的中心假设是，热负荷和地下水位深度的气候强迫将决定植物群落和生态系统结构，进而对系统的能量收支产生反馈作用。该研究计划包括在一系列独特的全系统微观实验中继续进行正在进行的研究，其中包括对温度和水分状况的操纵。要测量的过程包括主要的碳、水和能量通量，这些通量将被纳入生态系统模拟模型。不仅在全球变化领域，而且在生物多样性/群落结构对生态系统功能的影响这一更广泛的领域，了解待研究过程之间的反馈和相互作用都是一个高度优先事项。这项研究的地点在明尼苏达州北部。