Biogeochemical Cycling in the Organic-Rich Coastal Environment

富含有机物的沿海环境中的生物地球化学循环

• 批准号: 9017979
• 负责人: Christopher Martens
• 金额: $ 32.02万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-15 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017979&HistoricalAwards=false
• 关键词: Biogeochemical; Cycling; Organic; Rich; Coastal

This research is focused on quantitative studies of organic carbon diagenesis in rapidly accumulating coastal and upper slope sediments. The intermeshing goals reflect the central processes associated with accumulation and recycling of organic materials in all organic-rich marine environments. The goals are: 1) to quantify seasonal variations in the sources and input rates of organic matter to coastal sediments, 2) to understand the role of organic carbon source in controlling the rate and extent of organic carbon degradation, 3) to elucidate the role of bacterial assimilation of DOC ("secondary production") in the sediment carbon cycle, and 4) to determine the rates and pathways of organic carbon fermentation.

本研究的重点是定量研究快速堆积的海岸和上坡沉积物中的有机碳成岩作用。这些相互关联的目标反映了在所有富含有机物质的海洋环境中积累和再循环有机材料的中心过程。目标是：1)量化沿海沉积物有机质来源和输入速率的季节变化，2)了解有机碳源在控制有机碳降解速度和程度方面的作用，3)阐明细菌同化DOC(“次生产物”)在沉积物碳循环中的作用，4)确定有机碳发酵的速率和途径。