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1 Definition of a Silvicultural System 4 The Decision Process Appendix 1 Answer Key
2 Major Types of Systems 5 There's More to Learn Appendix 2 Advantages and Disadvantages
3 Variations of Major Types 6 Implementation Appendix 3 References

Seed Tree System Variations

The major types of seed tree systems can be differentiated based on the arrangement of the seed trees. arrow Seed tree system definition

Illustration of types of seed tree systems.


Uniform Seed Tree System

In uniform seed tree systems, individual trees are more or less uniformly distributed throughout the block. This system is the most common seed tree system in BC. Often more trees are left than the number required to meet regeneration requirements. This provides an economic opportunity for a removal cut or can satisfy other resource objectives, such as wildlife habitat.

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Grouped Seed Tree System

In a grouped seed tree system, seed trees are left in the block in small patches. These patches may be arranged in irregular groups or in strips. Generally, seedfall distance is a major consideration for determining distances between patches or groups of seed trees, although non-timber objectives may also play a part.

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The size of the seed group has of course great influence in determining its windfirmness.
Ralph Hawley (1929)

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