conifers: A response calibration function for the other conifer species

In THREC: Tree Height Response Calibration for Swedish Forests

A response calibration function for the other conifer species

Description

This function performs a response calibration of the height function for other conifer species. The other conifer species include: Silver fir, Douglas fir, Sitka spruce, Siberian larch, European larch, other larch, Lodgepole pine, other fir, other spruces.

Usage

conifers(DATA)

Arguments

DATA	data frame containing at least yta, rev, t_l, dia, hdom, ddom, and hojd.

Value

data frame with estimated height

Note

yta: plot number, rev: revision, t_l: species code, dia: diameter at breast height, 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

broadleaves(), which estimate the tree height of 'other broadleaves'.

Examples

library(THREC)

# sample data
data(broad)

conifers(broad)

THREC documentation built on May 29, 2024, 4:52 a.m.