Summary
This widely cited review by Six and colleagues, published in Plant and Soil (2002, vol. 241), examines the principal mechanisms by which soil organic matter (SOM) is stabilised against microbial decomposition. The paper synthesises evidence on physical protection within soil aggregates, chemical stabilisation through association with mineral surfaces, and biochemical recalcitrance, providing a conceptual framework that has been highly influential in soil carbon research. It is broadly regarded as a foundational reference for understanding SOM dynamics across a range of land-use and management contexts.
UK applicability
Although this is an internationally scoped review rather than a UK-specific study, its conceptual framework on SOM stabilisation mechanisms is directly applicable to UK arable, grassland, and mixed farming systems, informing soil carbon management strategies relevant to UK agricultural policy and net-zero commitments.
Key measures
Soil organic matter fractions; aggregate stability; organo-mineral associations; carbon turnover rates; macroaggregate and microaggregate dynamics
Outcomes reported
The study examined the physical, chemical, and biological processes by which organic matter is protected from decomposition in soils, including aggregate formation and organo-mineral interactions. It likely synthesised evidence on how these mechanisms influence the persistence and turnover of soil organic carbon pools.
Topic tags
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