Oregon Public Broadcasting  / Earthfix News

The U.S. Forest Service has made forest thinning one of its top priorities, particularly in fire-prone and unhealthy dry forests. But environmental groups say dense Douglas fir plantations on the wet side of the Cascades need to be thinned too. And that could help increase the lumber supply.

On a steep slope in the Siuslaw National Forest, Douglas fir trees are packed in like matchsticks. Dan Segotta, the U.S. Forest Service’s timber operations manager in the Siuslaw, says these woods were clear-cut in 1965, and then densely replanted. 20 years ago, forest managers in the Siuslaw began a thinning experiment on the site. They left this stand alone to serve as an experimental control.  more >