Reducing Uncertainty in Heterotrophic Respiration: Linking Continental Experiments, Analytical Modeling, and Shared Data Sets

减少异养呼吸的不确定性：连接大陆实验、分析模型和共享数据集

• 批准号: 1137178
• 负责人: Mark Harmon
• 金额: $ 8.25万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1137178&HistoricalAwards=false
• 关键词: Reducing; Uncertainty; Heterotrophic; Respiration; Linking

Determining the terrestrial carbon balance (how much carbon a landscape is gaining or losing) requires correctly estimating the difference between inputs and outputs. Scientific knowledge of the output side is relatively weak, however; in particular, the limited understanding of what is termed heterotrophic respiration (RH), the carbon respired by microbes from soil and decaying organic material, limits our predictive ability. This raises an unsettling question, one that is the focus, and underlying intellectual merit, of this exploratory project: can continental-scale carbon be balanced if the underlying science understanding is unbalanced? To address this problem, funds are provided to host a community assessment on understanding, constraining, and predicting large-scale RH carbon fluxes, bringing together scientists with a wide range of specialties, nationalities, and expertise. This workshop will benefit from, and take advantage of, a number of converging trends in carbon cycle science: innovative new continental-scale experiments; the sophistication of analytical methods linking individual measurements with continental- to global-scale analyses; and the increasing use of tools to collaborate, document, and analyze shared data sets. To maximize the impact of this workshop, the Awardee will live-stream the proceedings online; post all presentations; write a white paper that outlines the major limitations to understanding continental-scale RH, and offers possible solutions; develop manuscript(s) that address workshop topics, focusing on implications for large-scale science; hold follow-up sessions at national meetings; and encourage participants to use this as a springboard in advancing fundamental scientific research in Macrosystems Biology.

确定陆地碳平衡(一片土地获得或损失了多少碳)需要正确估计投入和产出之间的差额。然而，对输出方面的科学知识相对薄弱；特别是对所谓的异养呼吸(RH)的有限理解，RH是土壤和腐烂的有机物质中微生物呼吸的碳，限制了我们的预测能力。这提出了一个令人不安的问题，这个问题是这个探索性项目的焦点和潜在的学术价值：如果潜在的科学理解不平衡，大陆规模的碳能平衡吗？为解决这一问题，提供了资金，以主办一次关于了解、限制和预测大规模相对湿度碳通量的社区评估，汇集了具有广泛专业、国籍和专业知识的科学家。这次研讨会将受益于并利用碳循环科学中的一些趋同趋势：创新的新的大陆范围的实验；将个别测量与大陆到全球范围的分析联系起来的分析方法的复杂性；以及越来越多地使用工具来协作、记录和分析共享的数据集。为了最大限度地发挥研讨会的影响，获奖者将在线直播会议过程；发布所有演示文稿；撰写一份白皮书，概述理解大陆尺度相对湿度的主要限制，并提供可能的解决方案；编写手稿(S)，讨论研讨会主题，重点是对大范围科学的影响；在国家会议上举行后续会议；并鼓励与会者以此为跳板，推进大系统生物学的基础科学研究。