This my biggest concern and why I argue for preservation of forests beyond just carbon storage potential. We're actively degrading the lands ability to function with how we manage it and we're seeing the collapse of systems from preindustrial levels ability to capture offer these services. From what I've looked at, mostly impacts of fire and harvest, high intensity disturbances, serially, have degraded landscapes to between 10-50% of pre industrial capacity. Multiple disturbance is a principal mechanism, specifically 30 year harvest cycles associated with industrial timber operations. As well, catastrophic megafires like the biscuit fire result in a sterilization of the soil in the upper layers and a polymerizing of carbon compounds, resulting in hydrophobic surfaces that water doesn't penetrate into. The result is landscapes incapable of doing the basic ecological activities that we base our economiws around under an assumption they'll be available to us in the future.
It's not too great.