Shelterwood. Regeneration cut Modify environment of regen Provide seed source.

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Shelterwood

description

Even-age regeneration Length of regeneration time varies by circumstance

Transcript of Shelterwood. Regeneration cut Modify environment of regen Provide seed source.

Page 1: Shelterwood. Regeneration cut Modify environment of regen Provide seed source.

Shelterwood

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Shelterwood

• Regeneration cut

• Modify environment of regen

• Provide seed source

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Even-age regeneration

• Length of regeneration time varies by circumstance

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Process

• Create available growing space for regen– Removal of part of the overstory

• Remove remaining overstory before growth of regen is overly inhibited

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Stages

• Prep cut(s)

• Final removal

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Difference from Thinning

• Purpose is regeneration

• Main objective is not future growth of residual stand– Can be secondary objective

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Usually for natural regeneration

• Can be supplemented with planting

– Species– More uniform stocking

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Classic 3-cut Shelterwood

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Money Upfront

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Irregular shelterwood

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Strip shelterwood

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One cut shelterwood

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Framework

• Age structure

• Species composition

• Disturbance regime

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Yield

• Growth of regen

• Growth of remaining overstory

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Possibility of carrying some trees into next rotation

• Not part of “shelterwood” per se

• A variation worth considering

• Turns a single cohort stand into a two cohort stand

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Veg Management

• Difficult

• Major problem if competition is more shade tolerant than the desired species

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Logging equipment

• Almost anything can be used

• Cable on steep slopes can be difficult

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Cost

• Can be lowest cost

• Two or more harvests– Increased growth of overstory– Regen can be cheap

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Aesthetically desirable

• Continuous green cover

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