Dissolved organic matter molecular diversity and transformation potential are associated with microbial carbon use efficiency in paddy soils.
Microbial carbon (C) use efficiency (CUE) is a key regulator of soil C sequestration, reflecting how assimilated C is partitioned between biomass production and respiration. In paddy soils, how dissolved organic matter (DOM) molecular characteristics and microbial specialization jointly relate to CUE across straw amend...