RUI: Soil Carbon Sequestration and Turnover after Six Years of CO2 Fumigation at the Duke Forest FACE Experiment

RUI：杜克森林 FACE 实验六年二氧化碳熏蒸后的土壤碳封存和周转

• 批准号: 0235576
• 负责人: John Lichter
• 金额: --
• 依托单位: Bowdoin College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-01 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0235576&HistoricalAwards=false
• 关键词: RUI; Soil; Carbon; Sequestration; Turnover

This project will estimate of the long-term capacity of forest soils to sequester atmospheric carbon under elevated atmospheric carbon dioxide (CO2). Investigators from a small, undergraduate institution in Maine will conduct this research at The Duke Forest in North Carolina where the Duke FACE (Free-Air CO2 Enrichment) experiment is being conducted. This FACE experiment involves experimentally doubling atmospheric CO2 concentrations over large circular plots in a loblolly pine forest. The forest plots have been exposed to elevated CO2 continuously since 1996 and treatments will continue through the course of the NSF-funded soil study. The researchers will investigate processes that control carbon storage and turnover in forest soils under current conditions and under global projects of doubled atmospheric CO2 concentrations. The results will be relevant to the issue of the long-term sustainability of carbon sinks in forests. Additionally, this research will provide opportunities for undergraduate students in biology and chemistry at Bowdoin College to participate in important, interdisciplinary global change research, including opportunities to attend national scientific meetings.

该项目将评估森林土壤在大气二氧化碳（CO2）升高的情况下封存大气碳的长期能力。 来自缅因州一所小型本科院校的研究人员将在北卡罗来纳州的杜克森林进行这项研究，那里正在进行杜克 FACE（自由空气二氧化碳浓缩）实验。该 FACE 实验涉及在火炬松林中的大型圆形地块上实验性地将大气二氧化碳浓度加倍。 自 1996 年以来，这些林地一直暴露在升高的二氧化碳中，并且在 NSF 资助的土壤研究过程中将继续进行处理。研究人员将研究在当前条件下和全球大气二氧化碳浓度加倍项目下控制森林土壤碳储存和周转的过程。 结果将与森林碳汇的长期可持续性问题相关。 此外，这项研究将为鲍登学院生物学和化学专业的本科生提供参与重要的跨学科全球变化研究的机会，包括参加国家科学会议的机会。