assmann_layers {ForestElementsR} | R Documentation |
Attribute Tree Heights to Layers After Ernst Assmann
Description
Tree heights are attributed to three layers as proposed by Assmann (1961). 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 |
Value
An ordered factor of T, M, B values, corresponding to
heights
in the order as heights
was provided.
References
Assmann E (1961). Waldertragskunde. Organische Produktion, Struktur, Zuwachs und Ertrag von Waldbestaenden. BLV Verlagsgesellschaft, Muenchen, Bonn, Wien.
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)
[Package ForestElementsR version 2.1.0 Index]