A decade-long drainage on an Arctic floodplain has altered dominant plant species and soil temperature regimes. Consequently, CO2
exchange rates between the atmosphere and the terrestrial ecosystem were modified: CO2
uptake rates by the terrestrial ecosystem decreased and CO2
emission rates to the atmosphere increased. Ongoing global warming may thaw ice-rich permafrost and make some regions drier in the Arctic, and this will reduce carbon accumulation in the terrestrial ecosystem.