EAGER: BIOMAPS: Understanding Microbiological Intricacies and Developing Modeling Strategies to Estimate Nitrous Oxide Emissions from Urban Engineered Green Infrastructures

1514637 GoelEAGER：了解微生物的复杂性并开发建模策略来估计城市工程绿色基础设施的一氧化二氮排放美国国家工程院发表了一份题为《NAE工程的重大挑战》的报告。14项挑战中的一项是“管理氮循环”。这个项目的重要性是为了更好地了解雨水滞留池中的氮循环。这将使研究氮循环的科学家能够更好地解释这种潜在的重要氮素来源。生物保留池已演变为一种出色的选择，以绿色基础设施的形式管理暴雨径流中的营养物质。最近的研究工作评估了生物过程，如硝化和反硝化，对生物滞留池塘中氮的去向的贡献。然而，关于这些生物过程的动力学的信息，最重要的是，关于从这些绿色基础设施形成一氧化二氮气体的潜力的信息完全缺失。该项目旨在从位于犹他大学校区的原型生物保留场规模的设施中获得关于一氧化二氮通量潜力的第一批信息。结果将被用来建立概念模型来预测区域尺度上的这些通量。本项目提出的研究目标是探索性的，也是高风险的，因为对生物滞留池塘中的生物脱氮还没有很好的了解，而且关于这些城市绿色基础设施的一氧化二氮排放的信息也很少。该项目预计将导致一个新的研究领域，将绿色基础设施中的微生物过程与城市场地规模的水文过程联系起来，最终扩大到分水岭水平。

1514637GoelEAGER: Understanding Microbiological Intricacies and Developing Modeling Strategies to Estimate Nitrous Oxide Emissions from Urban Engineered Green InfrastructuresThe National Academy of Engineering published a report entitled "NAE Grand Challenges for Engineering." One of the 14 challenges was to "manage the nitrogen cycle." The importance of this project is to develop a better understanding of the nitrogen cycle in storm water retention ponds. This will enable scientists studying the nitrogen cycle to better account for this potentially important source of nitrogen.Bioretention ponds have evolved as an excellent option in the form of green infrastructure to manage nutrients in storm water runoffs. Very recent research efforts have evaluated the contribution of biological processes, such as nitrification and denitrification, on the fate of nitrogen in bioretention ponds. However, the information on the kinetics of these biological processes and most importantly, the information on the potential of nitrous oxide gas, N2O, formation from these green infrastructures are completely missing. This project aims to get the first information on the potential of nitrous oxide fluxes from prototype bioretention field scale facilities located at the University of Utah Campus. The results will be utilized to formulate conceptual model to predict these fluxes at a regional scale. The research objectives proposed in this project are exploratory as well as high risk as biological N removal in bioretention ponds is not well understood and little information is available on nitrous oxide emissions from these urban green infrastructures. This project is expected to lead to a new area of research linking microbiological processes in green infrastructure to urban site scale hydrologic processes, with eventual upscaling to the watershed level.