Summary
This 2017 narrative review synthesises peer-reviewed evidence on the mechanistic relationship between clay mineralogy and soil organic carbon stabilisation. The authors present evidence that different clay minerals—particularly 1:1 and 2:1 layer silicates—vary substantially in their capacity to sorb and protect organic matter through organo-mineral interactions. The work contributes to understanding the geochemical processes underpinning long-term soil carbon persistence and soil fertility in agricultural systems.
Regional applicability
The review addresses fundamental soil geochemistry principles applicable to United Kingdom soils, where 2:1 layer silicates (e.g., illite, montmorillonite) are common in many regions. Findings on clay-organic matter interactions are directly transferable to UK soil management and carbon sequestration strategies, though the specific clay mineral composition of UK soils varies by geology and region.
Key measures
Clay mineralogy classification; soil organic carbon stabilisation mechanisms; organo-mineral interaction pathways; soil carbon persistence
Outcomes reported
The review synthesises mechanistic evidence on how different clay mineral types (1:1 and 2:1 layer silicates) influence the sorption and protection of soil organic matter through organo-mineral interactions. It examines the pedogenic and geochemical processes that determine soil carbon persistence and long-term soil fertility.
Topic tags
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