Geochemical and hydrological controls on carbon sequestration, and methane production in aquatic systems

对水生系统中碳固存和甲烷产生的地球化学和水文控制

• 批准号: 386401-2010
• 负责人: Blodau, Christian
• 金额: $ 2.43万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=485315
• 关键词: Geochemical; hydrological; controls; carbon; sequestration

In wetlands, lakes, and reservoirs biomass decomposes in absence of oxygen, whose provision from the atmosphere is slow. An environment develops that withholds large amounts of carbon and nutrients from recycling to the atmosphere and surface waters and produces methane, a potent greenhouse gas. Changes in climate-related transport of water and energy alter the rates of these processes. The research examines chemical and physical control mechanisms on decomposition of biomass in these environments. These are used to analyze how the critical role of soils and sediments in stabilization of climate and nutrient status of Canada freshwater resources are impacted by climate change.

在湿地、湖泊和水库中，生物质在没有氧气的情况下分解，而大气中的氧气供应是缓慢的。一个环境的发展阻止了大量的碳和营养物质循环到大气和地表沃茨，并产生甲烷，一种强大的温室气体。与气候有关的水和能源输送的变化改变了这些过程的速度。该研究探讨了在这些环境中生物质分解的化学和物理控制机制。这些被用来分析土壤和沉积物在稳定气候和加拿大淡水资源的营养状况的关键作用是如何受到气候变化的影响。