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There may be no other forestry term that is as misunderstood and
derided as "clearcutting". Done poorly, it can be extremely
destructive. However, there are many situations where it can be
a beneficial and efficient way of regenerating trees and other vegetation.
In its most simple definition, clearcutting is the removal of all
trees and most if not all vegetation from an area, leaving all growing
space and resources available for the next generation.
This treatment
(figure 1) obviously favors shade intolerant species and creates
an even-aged stand.
If the stand is over-mature or mature, then clearcutting may be
a viable option.
Clearcutting
mimics catastrophic natural events such as hurricane or fire. Regeneration
may be achieved by artificial means (seeding or planting) or by
natural regeneration. Clearcutting may be done in alternating swaths,
with the remaining trees seeding the now empty areas. The areas
left uncut will eventually be harvested after regeneration has been
established. On rugged terrain, small patches may be cut under the
same theory as the linear swaths mentioned previously.
All trees were
removed from this block (figure 2) in one cutting. During the spring
of 1994, numerous seedlings and other types of vegetation quickly
occupied the site. In addition, many of the stumps have sprouted.
The slash, or tops and branches of felled trees, provides cover
for birds and small mammals, protects seedlings from deer browsing,
and adds nutrients to the soil as it decomposes. A clearcut is an
effective silvicultural tool for regenerating stands of shade intolerant
species. It mimics the kind of disturbance (fire, hurricane, tornado)
that occurs naturally. This block will change rapidly in the coming
years.
In our hardwood forests, care must be exercised to make sure that
naturally occurring regeneration is adequate before the cut is made.
Otherwise, establishment of the new forest can be delayed significantly,
and the site may become occupied by grasses and ferns or trees that
do not meet the landowner's
objectives. When applied appropriately, this treatment
leads to a forest of similarly aged trees, the most abundant
being those that grow best in high levels of sunlight. The
financial returns with this treatment can be high, but the aesthetic
value of the forest can be diminished until the new forest becomes
established.
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