main_species {THREC}

Main species generalized function response calibration

Description

This function performs a response calibration for main species at once. The main species include Scots pine, Norway spruce, and birch.

Usage

main_species(DATA)

Arguments

DATA

data frame containing at least yta, rev, t_l, dia, QMD, G, hdom, and hojd.

Value

data frame with estimated height

Note

yta: plot number, rev: revision, t_l: species code, dia: diameter at breast height, QMD: quadratic mean diameter, G: basal area per ha, hdom: height of the tree with the largest diameter (ddom) regardless of the species (m), hojd: sample tree height with missing values. In cases where hdom is not present in the inventory data, site index (SI) can serve as an alternative, although the estimated height may exhibit slight variations.

Author(s)

Ogana F.N. and Arias-Rodil M.

References

Ogana et al. (2023) https://doi.org/10.1016/j.foreco.2023.120843

Arias-Rodil et al. (2015) https://doi.org/10.1371/JOURNAL.PONE.0143521

See Also

species_specific(), which estimate the tree height of the main species based on species-specific height functions.

Examples

library(THREC)

# sample data
data(Treeht)

main_species(Treeht)