R G OderwaldMultiple Products with Point-Double Sampling
Forest inventories today must consider more products than ever before. A point double sample concentrates volume measurements on fewer points where more time can be spent assessing potential tree products. Products per tree can be based on one called product per tree with ratios for other products, multiple called products per tree, and product recalculation after the inventory using taper equations to reassess tree contents.
Multiple Products with Point-Double Sampling
- Multiple Products with Point-Double Sampling
- Introduction-Tallying Multiple Products
- More products than ever
- Point-double sample concentrates volume measurement
- One Called Product per Tree
- Measure one product
- Calculation procedure
- Applying ratios for other products
- Multiple Called Products per Tree
- Estimate products on volume points
- No product distinction on basal area points
- Large sample basal area estimate applies to all products
- Calculation procedure
- Summarizing volumes
- Multiple Products with Taper Equations
- Two diameter-height pairs per tree
- Styraight line taper
- Recalculating volumes for different products
- Example calculation by sawtimber top diameters
- Different product criteria per tree
- Choosing taper equation
- Matching diameter-height pairs to taper equations
Approved for 4 Class 1 CFE credits by the Society of American Foresters