Biogeochemical controls on contaminant and carbon dynamics in natural and engineered systems

保护淡水资源和排放温室气体是加拿大和全世界的重大环境问题。土壤在这些挑战中扮演着核心角色。氧化还原生物地球化学研究项目的目标是从机理上理解矿物对土壤(生物圈中最大的动态碳库)固碳的控制作用，并了解地下水污染威胁。通过使用多学科方法，拟议的研究计划解决了两个基本问题：(I)像锰氧化物这样的矿物质在土壤碳循环中扮演什么角色？以及(Ii)微生物、矿物质和有机物之间的相互作用如何控制威胁地下水质量的氧化还原活性污染物(人为和地源性)？

The preservation of freshwater resources and the release of greenhouse gases represent critical environmental issues in Canada and worldwide. Soils play a central role in these challenges. The goal of this CRC in redox biogeochemistry is to generate mechanistic understanding of mineral control on carbon sequestration in soils (the largest dynamic carbon reservoir in the biosphere) and understand groundwater contamination threats. By using a multidisciplinary approach, the proposed research program addresses two essential questions: (i) What is the role of minerals such as manganese oxides in soil carbon cycling? and (ii) How do interactions among microorganisms, minerals, and organic matter control redox-active contaminants (anthropogenic and geogenic) which threaten groundwater quality?