Collaborative Research: Intereactions Among Global Change Stressors in Northern Fens: Atmospheric CO2, Temperature, and Nitrogen Deposition

该项目将在明尼苏达州北部的一个研究地点调查大气二氧化碳增加、气候变暖和土壤湿度变化将如何影响北部泥炭地的生态系统过程、养分循环和碳平衡(二氧化碳的净吸收或损失)。这是明尼苏达大学德卢斯分校(PI：J.Pastor)和俄勒冈大学(PI：S.Bridgham)的研究人员合作的项目。该团队将与马里兰州史密森环境研究中心的Patrick Megonigal博士密切合作，后者已请求美国能源部生物和环境研究计划提供支持，以在研究地点建造和运营Face(自由空气二氧化碳浓缩)环。NSF-DOE将研究在当前条件下，以及在大气二氧化碳预计翻倍和北温带和北方泥炭地变暖的情况下，控制泥炭地碳储存和周转的过程。研究结果将与泥炭地作为碳汇的长期可持续性问题相关。此外，这项研究将为本科生、研究生和博士后提供参与跨学科全球变化研究的机会。

This project will investigate how increased atmospheric CO2, warmer climatic conditions, and changing soil moisture will influence ecosystem processes, nutrient cycling and the carbon balance (net uptake or loss of CO2) in northern peatlands at a research site in northern Minnesota. This is a collaborative project between investigators at the University of Minnesota-Duluth (PI: J. Pastor) and the University of Oregon (PI: S. Bridgham). This team will work closely with Dr. Patrick Megonigal (Smithsonian Environment Research Center, Edgewater MD) who has requested support from the US DOE Biological and Environmental Research Program to construct and operate a FACE (Free-Air CO2 Enrichment) ring at the research site. This NSF-DOE will investigate processes that control carbon storage and turnover in peatlands under current conditions and under a projected doubling of atmospheric CO2 and warming of north temperate and boreal peatlands. The results will be relevant to the issue of the long-term sustainability of peatlands as carbon sinks. Additionally, this research will provide opportunities for undergraduate researchers, graduate students and post doctoral to participate in interdisciplinary global change research.