Plant‐Plant Interactions Drive the Decomposition of Soil Organic Carbon via Nutrition Competition in Dryland DOI Open Access
Wei Wang, Meng‐Ying Li, Qing‐Hui Wen

et al.

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

ABSTRACT Plant‐plant interactions are often overlooked when assessing carbon (C) cycling in plant community. Limited research exists on how nutrient competition influences soil organic (SOC) dynamics via modifying rhizosphere C turnover. To address this issue, quantitative model of plant–plant was established three intercropping systems across 4 years. Key variables, including growth rate, relative interaction intensity, retention, root and microbial‐driven emissions, priming effects (RPE), extracellular enzyme activities, were quantified. Superior species exhibited significantly higher photosynthetic fixed retained roots rhizodeposition, respiration, but lower RPE (31.9%) to monocultures. Such trend tightly associated with significant reduction microbial mineralization caused by nitrogen phosphorus enrichment. In contrast, due low availability soils, the activities hydrolase inferior increased, resulting increase (21.9%) decrease from rhizodeposition. Therefore, plant‐plant crucial regulating SOC turnover superior can enhance conservation increasing inputs suppressing RPE. These findings confirm role dryland systems.

Language: Английский

Plant‐Plant Interactions Drive the Decomposition of Soil Organic Carbon via Nutrition Competition in Dryland DOI Open Access
Wei Wang, Meng‐Ying Li, Qing‐Hui Wen

et al.

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

ABSTRACT Plant‐plant interactions are often overlooked when assessing carbon (C) cycling in plant community. Limited research exists on how nutrient competition influences soil organic (SOC) dynamics via modifying rhizosphere C turnover. To address this issue, quantitative model of plant–plant was established three intercropping systems across 4 years. Key variables, including growth rate, relative interaction intensity, retention, root and microbial‐driven emissions, priming effects (RPE), extracellular enzyme activities, were quantified. Superior species exhibited significantly higher photosynthetic fixed retained roots rhizodeposition, respiration, but lower RPE (31.9%) to monocultures. Such trend tightly associated with significant reduction microbial mineralization caused by nitrogen phosphorus enrichment. In contrast, due low availability soils, the activities hydrolase inferior increased, resulting increase (21.9%) decrease from rhizodeposition. Therefore, plant‐plant crucial regulating SOC turnover superior can enhance conservation increasing inputs suppressing RPE. These findings confirm role dryland systems.

Language: Английский

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