Overcoming salinity barriers: granular straw promotes carbon cycling in saline soils by reshaping microbial community assembly

Saline soils, characterized by elevated salinity, depleted soil organic carbon (SOC), and degraded structure, constrain global agricultural productivity. While straw incorporation is known to promote SOC turnover, its efficacy in saline soils is limited by salt-impaired microbial decomposition. We evaluated how straw form regulates microbial-driven SOC turnover across salinity gradients (light-S1, moderate-S2, severe-S3) and temperatures (10 °C-T1, 20 °C-T2, 30 °C-T3) through a 360-day incubatio