Contemporary sulfur biomineralisation in acid sulfate soil landscapes

酸性硫酸盐土壤景观中的当代硫生物矿化

• 批准号: DP0453280
• 负责人: Prof Richard Bush
• 金额: $ 15.67万
• 依托单位: Southern Cross 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: 2004-01-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0453280
• 关键词: Contemporary; sulfur; biomineralisation; acid; sulfate

This project aims to generate fundamental knowledge on the processes, kinetics and impacts to water quality of contemporary sulfur biomineralisation in acid sulfate soil landscapes. Extreme concentrations of highly reactive sulfides are forming in the surface sediments of floodplain drains, wetlands and agricultural soils. The newly forming sulfides are linked to severe oxygen depletion and acidification of coastal rivers and the complete failure of floodplain vegetation, leaving soils susceptible to erosion. The proposed study will greatly advance our understanding of how our precious coastal floodplain soil and water resources are being degraded, and will guide better land management.

该项目旨在产生关于酸性硫酸盐土壤景观中当代硫生物矿化的过程、动力学和对水质影响的基础知识。在泛滥平原排水沟、湿地和农业土壤的表层沉积物中正在形成极高浓度的高活性硫化物。新形成的硫化物与沿海河流的严重氧气耗尽和酸化以及泛滥平原植被的完全丧失有关，使土壤容易受到侵蚀。拟议的研究将极大地促进我们对宝贵的沿海滩涂土壤和水资源如何退化的了解，并将指导更好的土地管理。