I'm not so sure about that. In Louisiana at least, when a pine plot is harvested, it's pretty much clear cut, with some trees left behind, but not necessarily the smaller trash trees
There is no possible way they can make the ethanol they claim they will make off of anything else but planted pine. It is already being done.
Some days the they are even bringing in pulp and chip& saw size trees too.
It is highly subsidized and government mandated.
It sucks. Bush and Obama and the entire Louisiana Congressional delegation at the time, including Jindal, (2007) with the exception being Jefferson suck for putting it into place. Jefferson of course screwed us on many other occasions.