c150_c130_coeff

Species-specific linear coefficients used to convert stem circumference
between 1.50 m (<code>c150</code>) and 1.30 m (<code>c130</code>).
These coefficients are used internally by <code>c150_c130</code>.

datasets

Provides tools for estimating forest metrics such as stem volume,
biomass, and carbon using regional allometric equations. The package
implements widely used models including
Dagnelie P., Rondeux J. & Palm R. (2013, ISBN:9782870161258)
"Cubage des arbres et des peuplements forestiers - Tables et equations"
<https://orbi.uliege.be/handle/2268/155356>,
Vallet P., Dhote J.-F., Le Moguedec G., Ravart M. & Pignard G. (2006)
"Development of total aboveground volume equations for seven important forest tree species in France"
<doi:10.1016/j.foreco.2006.03.013>,
Pauwels D. & Rondeux J. (1999, ISSN:07779992)
"Tarifs de cubage pour les petits bois de meleze (Larix sp.) en Ardenne"
<https://orbi.uliege.be/handle/2268/96128>,
Massenet J.-Y. (2006)
"Chapitre IV: Estimation du volume"
<https://jymassenet-foret.fr/cours/dendrometrie/Coursdendrometriepdf/Dendro4-2009.pdf>,
France Valley (2025)
"Bilan Carbone Forestier - Methodologie"
<https://www.france-valley.com/hubfs/Bilan%20Carbone%20Forestier.pdf>.
Its modular structure allows transparent integration of bibliographic or
user-defined allometric relationships.

David Linchant

GCubeR

Estimation of Forest Volume, Biomass, and Carbon

Juliette Defontaine

Samuel Douin

Timon Luizi

Pierre Bosman

c150_c130_coeff function

A data frame with columns:<dl>
<dt>species_code</dt>
<dd>Tree species code (character)</dd><dt>coeff_a</dt>
<dd>Slope coefficient a (numeric)</dd><dt>coeff_b</dt>
<dd>Intercept coefficient b (numeric)</dd><dt>min_c150</dt>
<dd>Minimum valid circumference at 1.50 m (cm)</dd><dt>max_c150</dt>
<dd>Maximum valid circumference at 1.50 m (cm)</dd>
</dl>

Format

Coefficients for circumference conversion (1.50 m &lt;-&gt; 1.30 m) — c150_c130_coeff

A data frame with columns:<dl>
<dt>species_code</dt>
<dd>Tree species code (character)</dd>

<dt>coeff_a</dt>
<dd>Slope coefficient a (numeric)</dd>

<dt>coeff_b</dt>
<dd>Intercept coefficient b (numeric)</dd>

<dt>min_c150</dt>
<dd>Minimum valid circumference at 1.50 m (cm)</dd>

<dt>max_c150</dt>
<dd>Maximum valid circumference at 1.50 m (cm)</dd>


</dl>

c150_c130_coeff: Coefficients for circumference conversion (1.50 m <-> 1.30 m)

Description

Usage

Arguments

Format