CanadaForestAllometry is an R package that brings together a collection of published allometric models developed for Canadian forests. The package provides a unified interface to estimate a range of tree- and stand-level attributes, based on models published in the Canadian forestry literature. The focus of CanadaForestAllometry is on standardization: models are implemented as faithfully as possible to their original formulations, with transparent parameter tables, consistent inputs/outputs, and jurisdiction-appropriate assumptions (e.g. merchantability rules).

Part of the package standardization is to use NFI species codes in all implemented models (e.g. PICE.MAR for black spruce). The package also includes translate_species_code(), which can translate among jurisdiction-specific codes, NFI and CANFI codes, common English and French names, and scientific names.

Full documentation is available at https://ptompalski.github.io/CanadaForestAllometry/

CanadaForestAllometry currently includes allometric models to:

• Estimate tree-level volume (total and merchantable): Tree volume models
• Estimate aboveground biomass (AGB): Aboveground biomass models
• Convert volume to biomass: National volume-to-biomass conversions models
• Estimate site index and site productivity: Site index models
• Convert total volume to merchantable volume
• Apply simple growth models to estimate changes in attributes over time

You can install the most recent version of the package by executing the code below:

devtools::install_github("ptompalski/CanadaForestAllometry")
library(CanadaForestAllometry)

This package is licensed under the GNU Lesser General Public License (LGPL-3.0).

© His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources, 2026.

See the LICENSE file for full license terms.