Contrasting responses of soil exoenzymatic interactions and the dissociated carbon transformation to short- and long-term drainage in a minerotrophic peatland

•Drainage upregulated the BDG, NAG, and PHO activities.•The preserved carbon and nutrients changed slightly due to drainage.•Severe nutrient-deficiency protected stored carbon during the short-term drainage.•Vegetation shifts compensated for the carbon loss during the long-term drainage.