Laasasenaho_1982_tree_volume_2_Finland: Volume curves from diameter only by Laasasenaho 1982.

In Silviculturalist/forester: Forest Science and Forestry

Volume curves from diameter only by Laasasenaho 1982.

Description

"The accuracy of equations based on diameter at breast height alone is in any case poor, and the equations are material specific. In some inventory tasks guideline volume curves, based on diameter only, are required. The following equations....can be used for this type of task."

Usage

Laasasenaho_1982_tree_volume_2_Finland(
  diameter_cm,
  height_m,
  bark = TRUE,
  species = "Picea abies"
)

Arguments

diameter_cm	Diameter at breast height 1.3 m in cm.
height_m	Height of the tree in metres.
bark	TRUE (default) for volume including bark, FALSE for volume under bark. If FALSE, diameter_cm is assumed to be under bark.
species	One of "Picea abies" (default), "Pinus sylvestris", "Betula pendula" or "Betula pubescens"

Details

Pine relative SE with bark (without bark) = 7.10 (7.5) percent.

Spruce relative SE = 7.47 (8.1) percent.

Birch relative SE = 8.23 (8.4) percent.

Value

Volume of the tree (dm^3)

Source

Laasasenaho, J. 1982. Taper curve and volume functions for Pine, Spruce and Birch. Commun. Inst. For. Fenn. 108:1-74. p. 42.

See Also

For diameter only function, see [forester::Laasasenaho_1982_tree_volume_Finland()]

Silviculturalist/forester documentation built on April 20, 2024, 2:13 p.m.