Comment by throwup238

“Coming decades” is an understatement. It depends on local conditions but douglas fir pines in the PNW take 200-300 years to decay completely, so that’s centuries more of carbon capture as long as we let our forests rewild. Realistically a forest becomes old growth once there are at least three generations of trees in various states of decay. That may decades in warmer climates but much longer in the north.