Unravelling the microbial mechanisms of soil nitrous oxide emissions

揭示土壤一氧化二氮排放的微生物机制

• 批准号: DE150100870
• 负责人: Dr Hangwei Hu
• 金额: $ 23.59万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Early Career Researcher Award
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2018-02-28
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DE150100870
• 关键词: Unravelling; microbial; mechanisms; soil; nitrous

Soil ecosystems are believed to be the most dominant sources of global nitrous oxide emissions. However, mitigations of nitrous oxide are strongly hindered by lack of knowledge on microbial mechanisms underpinning its production. This project aims to integrate a range of advanced approaches to identify the key nitrogen cycling genes as best predictors of nitrous oxide in field studies, to disentangle relative contribution of microbial pathways to nitrous oxide in glasshouse and microcosm studies, and to validate these findings across various land-use types in Australia and China. This will provide a critical framework incorporating microbial data into the nitrous oxide prediction models for better mitigation of greenhouse gas emissions.

土壤生态系统被认为是全球一氧化二氮排放的最主要来源。然而，由于缺乏对支撑一氧化二氮产生的微生物机制的了解，一氧化二氮的缓解受到了强烈的阻碍。该项目旨在整合一系列先进的方法，在田间研究中确定关键的氮循环基因作为一氧化二氮的最佳预测因子，在温室和微型研究中理清微生物途径对一氧化二氮的相对贡献，并在澳大利亚和中国的各种土地利用类型中验证这些发现。这将提供一个将微生物数据纳入一氧化二氮预测模型的关键框架，以便更好地减少温室气体排放。