NSF Postdoctoral Fellowship in Biology FY 2013

2013 财年 NSF 生物学博士后奖学金

• 批准号: 1309051
• 负责人: Amy Trowbridge
• 金额: $ 13.8万
• 依托单位: Trowbridge Amy M
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1309051&HistoricalAwards=false
• 关键词: NSF; Postdoctoral; Fellowship; Biology; FY

Linking measurements of soil-derived volatile organic compounds to atmospheric emissions modelsForests represent the primary source of volatile organic compounds (VOCs) globally, and VOCs significantly impact ecological and atmospheric processes, including the production of ozone. Most of what is known about VOC production in forests comes from studies of live foliage. However, recent work indicates that roots and soil microbes can be considerable sources of VOCs, with implications for models of atmospheric chemistry and ecosystem carbon budgets. In this project, soil and canopy VOC fluxes will be quantified in situ in forests dominated by different tree species. The physiological mechanisms and primary biogeochemical drivers responsible for VOC emissions from roots and soil microbes will be determined, leading to the development of mechanistic emission models that predict VOC effects on atmospheric composition and air quality. The results from this project will contribute a comprehensive mechanistic understanding of biological and physical controls over VOC emissions from the molecular-to-ecosystem-to-atmospheric scales. Results will be used to improve models of global VOC emissions and atmospheric chemistry.Training objectives include the integration of molecular, biogeochemical, and mathematical modeling techniques to explore a pressing ecological issue with implications for local and global air quality. Broader impacts include unique collaborative opportunities for research across diverse disciplines and between international institutions. Outreach activities include training and mentoring a number of underrepresented undergraduates through the Science, Technology, and Research Scholars (STARS) program, developing a research-related curriculum for a free science workshop series, and providing annual reports to both land managers and the general public.

将土壤来源的挥发性有机化合物与大气排放模型的测量联系起来是全球挥发性有机化合物（VOC）的主要来源，VOC显着影响生态和大气过程，包括臭氧的产生。关于森林中VOC生产的大多数知识都来自对现场叶子的研究。但是，最近的工作表明，根和土壤微生物可能是VOC的大量来源，对大气化学和生态系统碳预算的模型产生了影响。在这个项目中，土壤和冠层VOC通量将在以不同的树种为主的森林中进行量化。将确定负责根和土壤微生物的VOC排放的生理机制和主要的生物地球化学驱动因素，从而开发机械发射模型，以预测VOC对大气组成和空气质量的影响。该项目的结果将有助于对分子到生态系统到大气量表的VOC排放的生物学和物理控制的全面理解。结果将用于改善全球VOC排放和大气化学的模型。培训目标包括分子，生物地球化学和数学建模技术的整合，以探索对局部和全球空气质量的影响的紧迫生态问题。 更广泛的影响包括跨不同学科和国际机构之间的研究的独特协作机会。外展活动包括通过科学，技术和研究学者（Stars）计划培训和指导许多代表性不足的本科生，为免费的科学研讨会系列开发与研究相关的课程，并向土地管理者和公众提供年度报告。