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

该项目将调查如何增加大气中的二氧化碳，温暖的气候条件和不断变化的土壤湿度将影响生态系统的过程，养分循环和碳平衡（净吸收或损失的二氧化碳）在北方泥炭地在北方明尼苏达州的一个研究地点。这是明尼苏达州德卢斯大学（PI：J. Pastor）和俄勒冈州大学（PI：S. Bridgham）。 该小组将与帕特里克Megonigal博士（史密森环境研究中心，马里兰州埃奇沃特）密切合作，他已请求美国能源部生物和环境研究计划的支持，在研究地点建造和操作一个FACE（自由空气二氧化碳富集）环。 该NSF-DOE将调查在当前条件下以及预计大气CO2加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有关。 此外，这项研究将为本科生研究人员，研究生和博士后参与跨学科的全球变化研究提供机会。

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.