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According to John Kotar, forest scientist at the University of Wisconsin-Madison, the above statistic can be very misleading. "People who try to make a certain impression use this statistic to best advantage. Sure we have more wood fiber growing today, there is no argument about that. But, at least here in S. Wisconsin, we have fewer and fewer big high quality trees. No body ever wants to say that.
These statistics can be easily explained. Small, young trees grow so much faster than large, older trees. Obviously if you have a lot of young trees, there is a lot of growth per year. But what you don't see is that the big trees are disappearing and they are not about to reappear again if they are harvested as soon as they are merchantable.
Take as an example an acre of 1,000 year old redwood and an acre of 20 year old redwood - there is no comparison - the 20 year old stands is outgrowing the old growth. But if you cut the big trees, you will never see a 1,000 year old redwood ever again, no matter how much volume you grow. There is a cartoon of a logger cutting down a 1,000 year old redwood. He is saying to a forest creature watching him "Relax, don't worry, I'm going to plant you another one."
We have to ask, 'What kind of forests do we want', not just how much fiber will be grown. And just sticking more trees into the ground is not making a forest. Planting trees for the sake of planting trees is not enough.
Quality has so much to do with proper long term management."
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