We collected 6 years of flux measurements at two southern taiga peatland ecosystems, namely a paludified spruce forest and ombrotrophic bog located in the same landscape in western Russia, which showed that the interannual variability in the environmental conditions affect CO₂ ecosystem–atmosphere exchange differently in forest and non-forest peatlands. We observed that an anomalously warm winter and spring led to increasing CO₂ uptake at the paludified forest (more than at the bog).