Summary
This field study investigates how winter cover crops influence soil organic carbon partitioning between labile (particulate) and stable (mineral-associated) fractions across soil depth in subtropical paddy systems. The research suggests that cover crop benefits for carbon storage are depth-dependent, with potentially divergent effects on POC and MAOC pools. Such findings advance understanding of soil carbon dynamics in flooded rice systems and the mechanisms by which cover crops enhance soil health.
UK applicability
Direct applicability to UK systems is limited, as the study focuses on subtropical paddy fields with different climate, hydrology, and rice cultivation practices than UK temperate arable systems. However, the methodological approach to fractionating soil carbon at depth may inform UK research on cover crop effects in temperate cereal rotations.
Key measures
Particulate organic carbon (POC), mineral-associated organic carbon (MAOC), soil carbon stocks, soil depth profiles (likely 0-30 cm or deeper increments)
Outcomes reported
The study examined how winter cover crops differentially affect particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) fractions at different soil depths in a subtropical paddy field. Depth-dependent responses in carbon stabilisation mechanisms were measured and compared between cover-cropped and control treatments.
Topic tags
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