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Forestry Measurements
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Forestry Measurements

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Transcript

  • 1. Forestry Measurements
  • 2. Diameter
    • DBH (Diameter Breast Height)
      • 4.5 ft above ground
    • Biltmore Stick
      • Measures diameter of tree
      • Held 25 inches away
      • from eye
        • average arm reach of
      • logger in early times
  • 3. Tree Height
    • Merritt Hypsometer
      • Measured in number of 16 ft. logs rather than total
      • height in ft.
  • 4. Tree Height
  • 5. Board Foot
  • 6. Tree Volume
  • 7. Length
    • 1 Rod 16.5 ft
    • 1 Chain 66 ft
      • 4 Rods
    • 1 Mile 5280 ft
      • 320 Rods
      • 80 Chains
  • 8. Area
    • Acre
      • 43,56 sq. ft
      • 10 sq. chains
    • Section
      • 640 acres
      • 1 sq. mile
    1 mile or 80 chains 1 mi or 80 chains
  • 9. Volume / Cord
    • Cord
      • Volume of loose stacked wood
        • Measures pulp wood
        • Measures fire wood
      • Based on 128 cu. ft of wood
  • 10. Basal Area
    • Basal Area
      • Cross-sectional area of a tree at DBH
      • Measured in
        • Sq ft/tree
        • Sq ft/acre
  • 11. Basal Area
      • Point sample with angle gauge
        • An estimation
  • 12.  
  • 13.