assmann_layers: Attribute Tree Heights to Layers After Ernst Assmann

In ForestElementsR: Data Structures and Functions for Working with Forest Data

Attribute Tree Heights to Layers After Ernst Assmann

Description

Tree heights are attributed to three layers as proposed by \insertCiteassmann_1961;textualForestElementsR. The layers are called Top, T, Middle, M, and Bottom, B, and correspond to >80%, >50%, and >0% of a reference height (usually the height of the highest tree in the stand of interest).

Usage

assmann_layers(heights, reference_height = NULL)

Arguments

heights	Vector of tree heights
reference_height	Reference height for the 100% level. If NULL (default), the maximum of heights will be used as reference height.

Value

An ordered factor of T, M, B values, corresponding to heights in the order as heights was provided.

References

\insertAllCited

See Also

Other structure and diversity: shannon_index(), species_profile()

Examples

  # Monospecific stand
  trees <- norway_spruce_1_fe_stand$trees
  assmann_layers(trees$height_m)

  # Selection forest
  trees <- selection_forest_1_fe_stand$trees
  assmann_layers(trees$height_m)

ForestElementsR documentation built on April 3, 2025, 7:47 p.m.