Biogeochemical Controls On Contaminant And Carbon Dynamics In Natural And Engineered Systems

淡水资源的保护和温室气体的排放是加拿大和全世界的关键环境问题。土壤在这些挑战中发挥着核心作用。本CRC在氧化还原地球化学中的目标是产生对土壤（生物圈中最大的动态碳库）中碳封存的矿物控制的机械理解，并了解地下水污染威胁。通过使用多学科的方法，拟议的研究计划解决了两个基本问题：（一）矿物，如锰氧化物在土壤碳循环中的作用是什么？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（人为的和地质的）？

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?