Dynamic Release Mechanisms for Phosphorus in Shallow Ponds and Lakes

浅水池塘和湖泊中磷的动态释放机制

• 批准号: LP0348933
• 负责人: Dr David Walker
• 金额: $ 0.9万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-09-19 至 2006-09-18
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0348933
• 关键词: Dynamic; Release; Mechanisms; Phosphorus; Shallow

Phosphorus release from submerged sediments is controlled by the physical and chemical environment. The mechanisms are well understood where thermal stratification is persistent but the behaviour during transient episodes has not been properly addressed. The aim is to study a dynamic chemical and hydraulic environment and develop a model of phosphorus release under these conditions. Algal blooms, which rely on high nutrient concentrations, pose a significant threat to waterways yet a process-based description of phosphorus release is not yet possible. The outcome will be a verified model of phosphorus release mechanisms suitable for a range of water bodies.

沉积物中磷的释放受物理化学环境的控制。热分层是持久性的机制是很好理解的，但在瞬态发作期间的行为还没有得到适当的解决。目的是研究一个动态的化学和水力环境，并在这些条件下开发一个磷释放模型。藻类大量繁殖依赖于高营养浓度，对水道构成重大威胁，但目前还不可能对磷的释放进行基于过程的描述。其结果将是一个验证模型的磷释放机制，适用于一系列的水体。