LTREB: Effects of Warming and Clipping on Coupling of Carbon and Water Cycles in a Tallgrass Prairie

LTREB：变暖和削剪对高草草原碳和水循环耦合的影响

• 批准号: 0743778
• 负责人: Yiqi Luo
• 金额: $ 45万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-01 至 2015-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0743778&HistoricalAwards=false
• 关键词: LTREB; Effects; Warming; Clipping; Coupling

Ecosystems are providing critical ecological services to the human society. The services are likely to be strongly affected by climate change and biofuel production, but these effects have not been carefully studied over long time periods. The primary goal of this project is to assess long-term impacts of climate warming and biomass harvest on ecosystem services related to biofuel feedstock production, carbon sequestration, and water cycling, and biodiversity. The project will continue a long-term warming and biomass harvest experiment, which has been conducted in the southern Great Plains, USA, since November 1999. The investigators will quantify biomass production; soil carbon sequestration; partitioning of precipitation to evaporation, transpiration, and runoff; water use efficiency for plant biomass growth; length of growing seasons, and plant biodiversity in response to climate warming and biomass harvest. Results from this study on changes in runoff, freshwater supply, soil fertility, biofuel feedstock production, carbon sequestration, regulation of climate change by ecosystems, and biodiversity in response to climate warming and biomass harvest are highly relevant to the well-being of society and have implications for diverse environmental policies. This project also trains the next generation of scientists and will improve K-12 and university education.

生态系统正在为人类社会提供关键的生态服务。这些服务可能会受到气候变化和生物燃料生产的强烈影响，但这些影响在很长一段时间内都没有得到仔细的研究。该项目的主要目标是评估气候变暖和生物质收获对与生物燃料原料生产、碳封存、水循环和生物多样性有关的生态系统服务的长期影响。该项目将继续自1999年11月以来在美国大平原南部进行的长期变暖和生物质收获实验。研究人员将量化生物质生产；土壤碳固定；降水到蒸发、蒸腾和径流的分配；植物生物质生长的水分利用效率；生长季节的长度，以及植物生物多样性对气候变暖和生物质收获的反应。这项关于径流、淡水供应、土壤肥力、生物燃料生产、碳固存、生态系统对气候变化的调节以及生物多样性因气候变暖和生物质收获而发生变化的研究结果与社会福祉高度相关，并对各种环境政策产生影响。该项目还将培养下一代科学家，并将改善K-12和大学教育。