Overall, studies indicate both negative and positive climate change impacts on forest production systems. Some forests in the USA could benefit slightly from CO2 fertilisation  resulting in increased productivity especially for hardwoods . A study across Europe showed that both productivity gains  and losses  are possible until the end of the 21st century . The study further indicated that disturbances would reduce gains and exacerbate losses of productivity throughout Europe under climate change . For Central and Eastern Canada, decreasing biomass production is projected as a result of increasing disturbance from wildfire and drought . Climate-induced disturbances could also reduce the temporal stability of ecosystem service supply , increasing the volatility of timber markets . More broadly, climate change could lead to abrupt changes and the crossing of tipping points, resulting in profoundly altered future forest development trajectories . Some studies suggest that such threshold could already be crossed at relatively low warming levels of +2℃ , with substantial implications for ecosystem service supply .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report