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15 Cards in this Set
- Front
- Back
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For most Eastern forests how do you measure site index?
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Height, Age, Chart
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How is diameter (breast height) of a tree measured?
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4½ feet above ground, uphill side
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What is the vertical distance the (Merrit Hypsometer) is held from the eye?
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Arm’s length or 25 inches
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What is the formula to determine the volume of a tree?
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V= .16D2H + D where V= volume D= dbh H= # of 8' bolts
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Define basal area.
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Cross-section of a tree at DBH (diameter breast height)
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What is the formula to determine the basal area of a tree?
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.005454D2
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When using a prism to measure basal area, how should you hold the prism in relation to plot center?
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Directly over plot center
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How do you tell if a tree is in or out?
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If it is completely separate it is out, if it overlaps it is in, if it even touches it is in.
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How is basal area determined?
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# of countable trees x 10
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What are the two equations used to determine volume?
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25 + (average # of 16' logs x 50)= B.F./Sq. FT. (ratio)
B.F./Sq. FT. (ratio) x Basal Area per acre= Volume Where: average # of 16' logs= 20/# of countable trees and basal area per acre is # of countable trees x 10 |
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Will tolerant or intolerant species appear first?
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Intolerant
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Can tolerant species exist in shade and consequently reproduce in their own shade?
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Yes
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What is an even-aged stand?
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1 stage of growth present or trees within 1/5 rotation age or 10-20 years
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What are the number of sides that receive sunlight in trees that are:
a. dominant- b. codominant- c. intermediate- |
a- 4 b- 2-3 c- a little
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What is a pure stand?
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75-80% of the crown canopy is same species
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