Summary
This field-based study examines how two functionally distinct soil organic carbon pools—particulate and mineral-associated organic carbon—respond differentially to climatic gradients across managed croplands in Northeast China. The findings suggest that POC and MAOC exhibit contrasting sensitivities to temperature and precipitation changes, implying variable carbon persistence and turnover rates by fraction type. The work may support development of regionally tailored soil carbon conservation and management strategies in cool temperate arable systems experiencing climatic shifts.
UK applicability
While conducted in Northeast China's cool temperate climate, the mechanistic insights into POC and MAOC responses to temperature and precipitation may have relevance for UK arable systems, particularly in characterising soil carbon dynamics under changing UK climatic conditions. However, direct applicability would require validation in UK soil types and management contexts.
Key measures
Particulate organic carbon (POC) concentration; mineral-associated organic carbon (MAOC) concentration; temperature and precipitation gradients; soil carbon persistence and turnover rates by fraction type
Outcomes reported
The study measured particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) concentrations and their responses to temperature and precipitation gradients across managed croplands. It characterised how these two functionally distinct soil carbon pools exhibit differential sensitivity to climatic variation.
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