Use this forestry calculation to summarize a measured tree, plot, canopy, fuel, biomass, carbon, growth, density, or wood-volume quantity under a stated inventory convention.

Starting Value

Required number input.

Ending Value

Required number input.

Percentage change in a stand metric over an inventory interval, without annualization. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Increment Percent (percent)

The resulting increment percent returned as a number.

• Annual and periodic increments depend on measurement interval, survivor versus ingrowth accounting, mortality and harvest, age basis, site, and volume equation. MAI and current annual increment serve different management questions.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Use locally validated equations and inventory protocols, retain species and measurement metadata, aggregate with appropriate plot expansion and sampling weights, and report uncertainty with stand-level results.

• Basal Area Increment Percentage

  Percentage change in stand basal area from start to end inventory.

• Volume Increment Percentage

  Percentage change in stand volume from start to end inventory.

• Periodic Annual Increment

  Average annual volume increment between two inventory dates.