DISSERTATION RESEARCH: EXPERIMENTAL WARMING EFFECTS ON LABILE AND RECALCITRANT SOIL ORGANIC MATTER DECOMPOSITION IN A SOUTHERN BOREAL FOREST ECOSYSTEM

这个博士论文改进项目将研究气候变暖如何影响二氧化碳从北方森林土壤到大气的运动。 特别是，它将测试变暖对耐腐有机物的分解的影响是否大于对易分解有机物的影响。 这项工作将使人们更全面地了解有机碳在北方森林土壤中的固存或释放过程，气候变暖导致陆地土壤中二氧化碳向大气的移动增加，这是对气候变化的一个潜在的重要反馈。 了解土壤碳的命运以及它如何受到气温变暖的影响，对于改进温室气体输入大气的模型非常重要。

This doctoral dissertation improvement project will study how climate warming affects the movement of carbon dioxide from soils in boreal forests to the atmosphere. In particular, it will test whether warming affects the decomposition of decay resistant organic matter more than that of easily decomposed organic matter. This work will provide a more complete understanding of the processes by which organic carbon is sequestered in or released from boreal forest soils.Increased movement of carbon dioxide from terrestrial soils to the atmosphere in response to climate warming represents a potentially important feedback to climate change. Understanding the fate of soil carbon and how it is affected by warming temperatures is important for improving models of greenhouse gas inputs to the atmosphere.