Forest Management and Wood Supply

1
Forest Management and Wood Supply
2
Logging

• Clear Cutting
• Is the practice of cutting down trees, then
  cutting out their central boles (the clear trunk
  or central stem) and possibly branches in order
  to use the wood as an economic resource or to
  clear forest land for conversion to another use.
• Standing trees viewed as a potential economic
  resources are termed timber.

3
Methods and Harvest

• Methods Of Harvest
• Clear-cutting
• the most common and most criticized method of
  timber harvest in industrial operations.
• this essentially removes all the trees in a
  selected area.

4
Clear Cutting

• Clear Cutting
• Clear cutting is also the most economically-effici
  ent way to remove timber but treatment following
  a clear cut can lead to higher costs.
• Large poorly planned clear cuts are far more
  destructive than cuts that take into
  consideration natural topography, and bioregions.

5
Clear Cutting

• Clear Cutting
• The effects of sustainable ecology can mimic the
  effects of a forest fire or other natural
  disturbance.
• Many different species can take longer or not
  regenerate for long periods of time after such a
  occurrence.

6
Selection Harvesting

• Selective Harvesting
• This is the other type of method used in forest
  harvesting.
• Selection cutting is the practice of removing
  mature timber or thinning to improve the timber
  stand.
• This system is used to maintain uneven-aged
  stands to protect soils and to maintain wildlife
  habitat.

7
Selection Harvesting

• Selective Harvesting
• A particular type of selective cutting that
  targets only the highest-quality timber of
  certain species is termed High-Grading
• Specific trees are chosen for harvest and others
  left to mature.
• The final product of a selective harvest allows
  more light to pass through the canopy. This
  generates a more productive under-story which
  creates a diverse wildlife habitat and higher
  quality timber.

8
(No Transcript)
9
Over-story Cut

• Overstory Cut
• Over-story removal or shelter wood cutting is a
  variation of select cutting.
• In this method all the large trees are taken and
  the under-story of saplings and smaller trees are
  left for regeneration.
• Over-story removal requires care be used to avoid
  residual stand damage.

10
(No Transcript)
11
Maine Timber Supply

• timber inventories remain adequate to support
  current harvest levels for the next 50 years.
• growth is projected to be less than current
  harvest levels. The long-term imbalance between
  growth and harvest is cause for concern and does
  not indicate sustainable forest management.
• The report summarizes that current forest
  management activities are capable of sustaining
  86 of current harvest levels.

12
Harvest Time !!!

• Harvest Time
• Winter is the prime logging season in the
  Northeast because the ground is frozen and heavy
  machinery can get into the woods without causing
  much damage to the soil.

13
Riparian Buffer zones

• Riparian Buffer Zones
• While avoiding damage to the soil loggers also
  want to protect waterways. Riparian buffer zones
  are made up of trees and shrubs. They are left
  standing along logging roads near waterways to
  help prevent harmful runoff.

14
2005 / 2006 harvest

• This winter, the ground never froze. Heavy rains
  in October and November, followed by unseasonably
  warm weather in December and January have made
  this one of the worst timber harvest seasons
  anyone can remember.

15
Got Wood?

• Got Wood ???
• What are some of the general uses of wood and
  processed timber in maine ?
• What are the benefits of using in state logged
  timber?

16
Sources

• http//www.law.harvard.edu/students/orgs/elr/vol29
  _1/scott.php
• http//www.maine.gov/doc/mfs/pubs.htm
• http//www.bio.net/bionet/mm/ag-forst/1998-Septemb
  er/011427.html