I don't know about forest cover, but we have the same issues in Sweden. The biological diversity in areas used for forestry is poor compared to untouched forests. The recent dry weather has been very good for a kind of beetle that has destroyed vast amounts of trees. Forests that were untouched, or just mixed kind, did a lot better.

Regulation is slowly catching up though, and some of the larger companies have actually started doing more than is required by law.