280NOT08 - Introduction to Wood 600 Different Species of...

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Introduction to Wood 600 Different Species of trees exist in U.S. 15-20 are commercially used Most are forrested Growing quantities are farmed
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Common Species of Wood Fir Hemlock Pine Poplar Redwood Spruce Cedar Hickory Maple Oak Ash Birch Cypress Walnut Gum
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Anatomy of a Tree Root - absorbs moisture Trunk - mechanical strength rigidity height two way transfer moisture UP sap DOWN
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Anatomy of a Tree Crown - Area of chlorophll for photosynthesis – O 2 given off – CO 2 absorbed Bark - protective layer
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Anatomy of a Tree Cambium Layer - Growth layer for cell division. 1 ring for each growing season, Inside Layer (springwood) is hollow tube(large insoftwood) Outside Layer (summerwood) is from slower growth and has thicker walls
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Anatomy of a Tree Heartwood: storage for food. comprised of dead cells solid filled cells mechanically strong No starches Dense (nearly impermeable)
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280NOT08 - Introduction to Wood 600 Different Species of...

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