A 2019 EASAC report has said the time it takes for carbon emissions associated with woodburning to be evened out can range from years to decades or even centuries, depending on conditions.
Climate Impact Of Wood-burning Under Discussion
According to dw.com, the climate impact of wood-burning is contested. The EU officially counts wood and other biomass as carbon neutral, based on the premise that CO2 emitted through burning will be reabsorbed by more trees in the future. But the European Academies Science Advisory Council says scientific study suggests the trend to replace coal with wood pellets as a means of generating electricity actually increases “atmospheric levels of carbon dioxide for substantial periods of time."