DISSERTATION RESEARCH: Tracing autochthonous carbon production and fate in a mountain stream

论文研究：追踪山间溪流中的本土碳生产和命运

• 批准号: 1110831
• 负责人: Robert Hall
• 金额: $ 1.4万
• 依托单位: University of Wyoming
• 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 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110831&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Tracing; autochthonous; carbon

This doctoral dissertation improvement project will study the movement and transformation of carbon in streams. Streams and rivers are not passive pipes that merely transport carbon. Active uptake of carbon through photosynthesis and subsequent release of carbon through respiration takes place in streams and can lead to complex patterns of carbon exchange with the atmosphere as water moves from land to the oceans. This study will measure the amount of carbon in mountain streams that is respired, stored in living organisms, and transported downstream. Current freshwater carbon budgets include the role of terrestrial carbon processing, but have not addressed the role of in-stream carbon fixation and processing and, consequently, may underestimate rates of carbon dioxide transfer from streams to the atmosphere, carbon burial, and carbon export downstream. This study will help complete our understanding of the role streams and rivers play in carbon movement in the landscape.

本博士论文的改进项目将研究碳在水流中的运动和转化。 溪流和河流并不是仅仅运输碳的被动管道。 河流通过光合作用积极吸收碳，随后通过呼吸释放碳，随着水从陆地流向海洋，可能导致与大气的碳交换模式复杂。 这项研究将测量山区溪流中的碳量，这些碳被呼吸，储存在生物体内，并向下游输送。 目前的淡水碳预算包括陆地碳处理的作用，但没有解决流中碳固定和处理的作用，因此，可能低估了二氧化碳从河流转移到大气中，碳掩埋和下游碳输出的速度。 这项研究将有助于完成我们的作用，溪流和河流在景观中的碳运动的理解。