Microbial carbohydrate-active enzymes influence soil carbon by regulating the of plant- and fungal-derived biomass decomposition in plateau peat wetlands under differing water conditions.

Among the GH microbial phyla Proteobacteria had the highest abundance and showed a decreasing trend in microbial phyla abundance with gradual water increase, with a range of 0.009–0.007%, which was negatively correlated with changes in water content; Verrucomicrobia had the lowest abundance, which decreased in abundance with increaseing water, which was negatively correlated with changes in water conditions; Acidobacteria, Chloroflexi, Gemmatimonadetes, and Verrucomicrobia all decreased in abundance with increasing water compared to dried wetland conditions, and the differences were significant under water-scarce wetlands conditions ( Figure 3C , p < 0.05).

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