Hhhmmm, interesting. Thanks for the information and the links. I guess the question is how to preserve to it if it's worth preserving and also how sure it doesn't come at the cost of geographical accuracy. Since a lot of it is clear cut not tree containing areas and the boundaries are completely arbitrary in real life. Plus it would be unrealistic to fill in  every blank area with an individual national forest boundary. There isn't a specific landuse tag for lumber usage either. So any ideas about how it could be mapped?