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

论文研究：南方寒带森林生态系统中不稳定和顽固土壤有机物质分解的实验变暖效应

• 批准号: 1110506
• 负责人: Sarah Hobbie
• 金额: $ 1.48万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110506&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; EXPERIMENTAL; WARMING; EFFECTS

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.

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，比起容易分解的有机物，增温是否更能影响耐腐有机物的分解。这项工作将为有机碳从北方森林土壤中被封存或释放的过程提供更全面的了解。由于气候变暖，二氧化碳从陆地土壤向大气的运动增加，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，对于改进温室气体向大气输入的模型非常重要。