shelterwood. regeneration cut modify environment of regen provide seed source
DESCRIPTION
Even-age regeneration Length of regeneration time varies by circumstanceTRANSCRIPT
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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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