Gunplummer, having a degree in forestry I have to tell you that there is a wrong way and a right way to harvest trees. One is a total clear cut like you described. But you can also do what is commonly called a selective clear cut. This is where certain 'seed' trees are left standing such as oaks and beech. Once the canopy is open, the lush undergrowth and grasses are the first to come back. These attract the game. Then as time passes, what acorn and nuts that are not consumed by the animals begin to generate and saplings sprout. Granted it takes a long time for oaks to bear fruit. But the other 'scrap' as you call it (black birch, maples etc) provide excellent browse for deer. And because they are relatively fast growers they can sustain a fair population. The good thing about these trees is for the most part they have a short life cycle.