Summary
Liang and Zhu propose the soil microbial carbon pump as a unifying concept to explain how terrestrial soil systems sequester atmospheric carbon through microbial metabolism and necromass formation. The framework, as suggested by the 2021 publication date, synthesises mechanisms by which microbial communities transform plant-derived organic matter into chemically stable, long-lived soil carbon pools. This conceptual model may offer improved understanding of soil carbon cycling under different farming and land-use regimes.
UK applicability
The SMCP framework is potentially applicable to UK soil carbon strategies and regenerative agriculture initiatives, particularly in understanding how soil management practices affecting microbial communities influence long-term carbon sequestration. Its relevance to UK arable and grassland systems depends on empirical validation across temperate climatic conditions.
Key measures
Microbial carbon transformation rates, soil organic matter persistence, microbial necromass accumulation, metabolic efficiency
Outcomes reported
The paper introduces the soil microbial carbon pump (SMCP) as a conceptual framework for understanding how soil microorganisms facilitate long-term carbon sequestration in terrestrial ecosystems. It examines the mechanisms by which microbial metabolic processes convert labile organic carbon into recalcitrant soil organic matter.
Topic tags
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