Long-Term Crop Rotation Revealed the Relationship Between Soil Organic Carbon Physical Fraction and Bacterial Community at Aggregate Scales.

ABSTRACT: Crop rotation enhances soil fertility and health by modulating microbial communities, with soil organic carbon (SOC) dynamics governed by aggregate-microbial interplay. To date, the effects of different crop rotations on SOC fractions and relevant bacterial communities at aggregate scales remain uncertain. Here, a 17-year field experiment was used to reveal the effects of maize monoculture (MM), soybean monoculture (SS), and maize and soybean rotation on the SOC fractions and bacterial communities. Compared with the SS treatment, only the MS treatment significantly increased the particulate organic carbon (POC) content at the aggregate scale. Nevertheless, higher mineral-associated organic carbon (MaOC) contents were observed under the MS and MM treatments than under the SS treatment. The

SUBMITTER: Meng X 

PROVIDER: S-EPMC11944754 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature