STEMS > Silvicultural Systems > Extended Rotation with Commercial Thinning
Extended Rotation with Commercial Thinning

Extended rotation with commercial thinning is not a silvicultural system, but it provides baseline data for comparing silvicultural systems. Thinning allows the remaining trees enough space to maintain high growth rates for an extended period. This process produces old-growth attributes within a relatively short time frame. The long-term replacement of old-growth forest attributes through active silvicultural measures is part of the Vancouver Island Land Use Plan for the Sayward Forest.

For photo of extended rotation with commercial thinning see Tour Stop 12

Silvicultural Systems:

1. Patch Cut
2. Extended Rotation
3. Group Selection
4. Clearcut with Reserves
5. Dispersed Retention
6. Extended Rotation with Commercial Thinning
7. Aggregate Retention

Immediately after the first entry
After 30 years
  Click to see larger image.
  A view of the extended rotation with commercial thinning treatment.

Summary Description of Key Features

Silvicultural System: Extended Rotation with Commercial Thinning
Treatment Unit Size: 18.6 ha
Opening Size: Single trees
Deferred Areas: 350 overstory and 150 understory trees per ha over 80 years
Retention Structures Objective: 5 ha of adjacent
wildlife tree patches
Age Structure: Even-aged
 
Last Modified: 2008 May 20.
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