I recall most trees are actually counted by the number and not necessarily volume or any other more reasonable metric. For example here in the Netherlands you can easily cut down vast amount of trees as long as you simply replant the same amount of trees. Diversity doesn't matter and it results in images of seeing incredibly dense populated pine trees, that are so close they're even choking each other and just the tips survive. Suffice to day these "forests" don't really live long.

Sometimes I think some of the most valuable assets will be century old trees.