Enhancing nutrient retention in soils through management of microbial biomass

通过微生物量管理增强土壤养分保留

• 批准号: DP0450397
• 负责人: Em/Prof Arthur McComb
• 金额: $ 18.73万
• 依托单位: Murdoch University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-07-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0450397
• 关键词: Enhancing; nutrient; retention; soils; through

Soil microbial-processes are generally studied in relation to mineralisation of nutrients but rarely for their potential to retain nutrients and reduce nutrient leaching. We hypothesise that management of microbial immobilisation will enhance nutrient retention in nutrient enriched soils during seasonal rains. This hypothesis will be tested under strongly seasonal environments of southwest Australia where nutrient leaching from soils degrades quality of surface and groundwater. We will first investigate pathways and conditions leading to microbial immobilisation. We will then explore the regulation of substrate and nutrient conditions to promote such retention, and subsequently develop management interventions based on microbially-mediated nutrient retention.

土壤微生物过程的研究通常与养分矿化有关，但很少涉及其保留养分和减少养分淋溶的潜力。我们假设，微生物固定化管理将提高养分富集土壤在季节性降雨的养分保留。这一假设将在澳大利亚西南部的季节性环境下进行测试，从土壤中浸出的养分会降低地表水和地下水的质量。我们将首先研究导致微生物固定化的途径和条件。然后，我们将探索基质和养分条件的调节，以促进这种保留，并随后开发基于微生物介导的养分保留的管理干预措施。