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Forest Inventory & Analysis Program
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Annual Inventory Design: Phase II

Ground Sampling of Forest Attributes

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LevelVariablesUse

Location

• Location ID
• Sample Kind
• Measurement Date
• Previous Land Use
• Terrain Position
• Site Productivity Class
• GPS Coordinates

• Identifying and locating the plot
• Referencing with satellite imagery
• Accounting for sample locations

Condition

• Slope and Aspect
• Land Use
• Forest Type
• Stand Origin
• Stand Size
• Stand Age
• Physiographic Class
• Stand History
• Owner Class

• Row and column headings

Tree

• Species
• Tree History
• Diameter at Breast Height
• Condition Class
• Sawlog Length
• Board-foot Cull
• Bole Length
• Cubic-foot Cull
• Total Height
• Crown Class
• General Damage and
   Cause of Death
• Special Damage
• Tree Class

Compute Derived Variables ...

• Forest Type
• Stand-size Class
• Stocking Class
• Inventory Volume (CF and BF)
• Inventory Change Components
• Others (as needed)

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