Effects of Long-Term Elevated CO₂ on Soil Aggregate Structure and Microbial Communities in a <i>Deyeuxia angustifolia</i> Wetland of the Sanjiang Plain.

ABSTRACT: To investigate the effects of long-term elevated atmospheric CO₂ (eCO₂) on the distribution and stability of soil aggregates and microbial characteristics in wetland soils and to reveal the mechanisms by which eCO₂ influences soil organic carbon (SOC) sequestration, a multi-temporal-scale eCO₂ control experiment was conducted in the Sanjiang Plain wetland with treatments at ambient CO₂ concentration (AC), 550 ppm, and 700 ppm CO₂. Soil aggregate fractionation, phospholipid fatty acid (PLFA) analysis, and redundancy analysis (RDA) were used to analyze changes in aggregate size distribution, stability indices (MWD, GMD), microbial biomass, and community structure. The results showed that eCO₂ significantly affected

SUBMITTER: Shi L 

PROVIDER: S-EPMC12735876 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature