Land Use‐Induced Changes in Nutrient Accumulation and Bacterial Diversity Shift Stoichiometry of Soil Enzyme Activity

• DOI: 10.1002/ldr.5651
• Publication Date: 2025-05-12T23:04:33Z
• Authors: Quan Zhou; Quanchao Zeng; Lianhao Zhou; Man Hu
• Keywords: Stoichiometry; Soil nutrients

ABSTRACT Soil enzymes are the rate‐limiting steps in catalytic breakdown of organic matter, governing process and efficiency nutrient cycling soil. Despite their crucial role agricultural management climate change mitigation, our understanding enzyme‐mediated mechanisms by which soil microorganisms regulate soils remains limited. This study investigated patterns extracellular enzyme activities related to carbon (C), nitrogen (N), phosphorus (P) cycling, along with driving factors, both natural ecosystems. Our results indicated that citrus cultivation significantly reduced bacterial community diversity. Compared forest soils, citrus‐planted exhibited markedly higher levels available phosphorus, correspond decreased C‐ P‐acquiring increased activity N‐acquiring enzymes. Regression analyses revealed were positively correlated diversity, whereas was negatively associated In contrast, availability N P, while showed negative correlations. These findings suggested highly responsive variations microbial Enzyme vector analysis further as diversity decreased, limitation shifted from nitrogen. transition is primarily driven citrus‐induced decline resulting enhanced limitation. The shift limitation, influenced pH, has significant implications for fertility management, particularly enhancing reduce chemical fertilizer use support climate‐smart agriculture face global environmental challenges.