Comment by CalRobert

Interestingly, clearcutting is part of it but another part is just grazing. If you let sheep graze in a forest they will eat all the saplings, so after a century of this, the old trees die out without new ones to replace them. I agree with your point but thought that could be of interest - Whittled Away, by Padraic Fogarty, is a good book discussing this (and why Ireland, which really should be all forest, is an ecological wasteland more generally)