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UMass Amherst NRC 225 - Silvicultural Methods
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NRC 225 1st Edition Lecture 23 Outline of Last Lecture i Leaves ii Seedling iii Live Crown Ratio Outline of Current Lecture I Silvicultural Methods II Shelter Wood III Forest goods services function and values IV Triad Concept Current Lecture Silvicultural Methods Silvicultural process of guiding the growth and development of forest Improvement cuts and thinning Harvest Regeneration Cuts Even Aged Methods Clear cut simulating stand replacement event type Seed tree 2 to 10 trees per acre left to cast seed Shelter wood prepatory establishment removal Coppice sprout methods Using natural tendencies of some tree species to sprout Aspen and Red Maple Cut mature forest and within first growing season you have regeneration Aspen used for writing paper Harvest Regeneration Cuts even Aged Methods Singe tree selection sounds good not tough to do Small group selection 2 5 trees per group Patch selection up to 1 acre and 100 trees Shelter wood 1 Prepatory Cut A crown thinning to improve the vigor resistance to wind damage seed production and growth rate of residual stand 2 Seed Cut These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Creates openings alters microclimate on the forest floor generates abundant seed to establish yet protect seedlings with the shelter wood 3 Removal Cut or leaving Legacy Trees Harvesting the shelter wood to release the even aged regeneration now large saplings and add to the total income of the stand treatment now very valuable trees Forest goods services function and values Goods Market valued life sustaining Wood 100s of products and uses Food game fish wild rice berries mushrooms ect Maple products cultural heritage Water the essential forest product Recreation many types many interests positive and negative effects Ecosystem services the greatest good Carbon sequestration Clean air Water filtration subsurface and groundwater flow Erosion control soil and slope stability Triad Concept 1 RESERVE AREAS Special places unique values No silviultre or salvage logging Few if any roads Natural disturbances shape forest Wild land Preservation 2 EXTENSILVELY MANAGED AREAS Multiple use emphasis Silvicultural for wildlife ECT Mainly uneven aged methods Limited road network Natural disturbance and active management shapes forest Conservation 3 INTENSIVELY MANAGED AREAS Agroforestry with constraints High productivity for wood fiber Mainly even aged methods Intensive silviculture Good access and road network Some other function and values Utilizations


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