Global Change Reshapes Microbial Residues and Plant Lignin Components in Soils

only increased amino sugar content by 14.6%. Warming increased glucosamine and muramic acid contents, whereas drought had no effect on amino sugar and lignin phenol contents. Soil amino sugars played a more critical role than lignin phenols in SOC accumulation, and their dynamics were influenced by soil nutrient availability and microbial communities under global change. These findings advanced our understanding of the dominant role of microbial residues in SOC accumulation mediated by the nutrient stoichiometry and microbial communities.