|
|
|
Selective Harvest
Three Approaches to Developing Uneven-aged Forest Structure on the Elizabeth Starker Cameron Demonstration Forest, Sept. 2001
Free Selection: This was an opportunistic
approach for converting a relatively even-aged forest to an uneven-aged structure
while improving the distribution of conifers. Uniform stands of Douglas-fir
were thinned (mostly from below) to leave wind-firm dominant or co-dominant
trees. In some locations, larger, more dominant trees were removed to favor
healthy, midstory trees. Areas that were severely under-stocked with conifers
were marked to reduce hardwood stocking and stimulate conifer regeneration.
These patches ranged in size from 1/10th acre up to about 2 acres and were
irregular in shape. Existing gaps in the canopy were slightly enlarged by
removing peripheral tree(s). Gaps larger than 1/20th of an acre were planted
with Douglas-fir, western redcedar, and hemlock. While some hardwoods clumps
were chosen for removal because of the canopy space they dominated, several
pockets of hardwood, and large "legacy" or "wolf" trees
were retained to encourage diversity within the stand.
You'll need the latest version
of
QuickTime (available free) to see this panoramic movie.
Click on mouse and drag cursor to see panoramic view of a free selection harvest.
|
|
You may direct comments to
Websupport
Disclaimer
