# Pinus albicaulis

Pinaceae. 10 equations apply. Each output lists them most specific first: fitted on this species, on a variety of it, pooled fits that included it, then its genus and family. Within each step, equations the authors advised against go last, then those read from compilations; more trees come first. The order shows how specific the evidence is, not which equation predicts best.

Wood density 0.4 g/cm³, estimated from 2 samples in 2 studies by the [Global Wood Density Database v.2](https://doi.org/10.5281/zenodo.16919509) (Fischer et al. 2026, https://doi.org/10.1111/nph.70860; CC BY 4.0).

## Aboveground biomass

1. Chojnacky et al. 2014 (pooled, includes it): Pooled fit on 11 named species and others, this one included; Number of trees not stated; DBH 3–180 cm; Read from the original paper.
   - [North American taxa group: Pinus < 0.45 spg (Table 5)](https://treeallometry.org/equations/chojnacky-2014-pinus-spg-lt-045/), Chojnacky et al. 2014: Pinus < 0.45 spg (Pinus albicaulis, P. arizonica, P. banksiana, P. contorta, P. jeffreyi, P. lambertiana, P. leiophylla, P. monticola, P. ponderosa, P. resinosa, P. strobus, Pinus spp.), United States; inputs DBH; DBH 3–180 cm.

2. Brown 1997 (same genus): Fitted on the genus Pinus; 63 trees across all species; DBH 2–52 cm; Read from the original paper.
   - [Tropical pines AGB from DBH (Eq. 3.1.8 / 3.2.8)](https://treeallometry.org/equations/brown-1997-pine/), Brown 1997: Pinus, Global; inputs DBH; DBH 2–52 cm; 63 trees.

3. Vargas-Larreta et al. 2017 (same genus): Fitted on the genus Pinus; Number of trees not stated; Read from the original paper.
   - [Pinus total aboveground biomass](https://treeallometry.org/equations/vargas-larreta-2017-all-pines-agb/), Vargas-Larreta et al. 2017: Pinus, Mexico; inputs DBH + Height.

## Branch biomass

1. Vargas-Larreta et al. 2017 (same genus): Fitted on the genus Pinus; Number of trees not stated; Read from the original paper.
   - [Pinus branch biomass (wood and bark)](https://treeallometry.org/equations/vargas-larreta-2017-all-pines-branch/), Vargas-Larreta et al. 2017: Pinus, Mexico; inputs DBH + Height.

## Foliage biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 11 trees; DBH 3.3–18.8 cm; Read from the original paper.
   - [NSVB whitebark pine, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-albicaulis-foliage/), Westfall et al. 2024: Pinus albicaulis, United States; inputs DBH + Height; DBH 3.3–18.8 cm; 11 trees.

2. Vargas-Larreta et al. 2017 (same genus): Fitted on the genus Pinus; Number of trees not stated; Read from the original paper.
   - [Pinus foliage biomass](https://treeallometry.org/equations/vargas-larreta-2017-all-pines-foliage/), Vargas-Larreta et al. 2017: Pinus, Mexico; inputs DBH + Height.

## Stem volume

1. Westfall et al. 2024 (this species): Fitted on this species; 36 trees; DBH 15.24–60.45 cm; Read from the original paper.
   - [NSVB whitebark pine, species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-albicaulis-volume/), Westfall et al. 2024: Pinus albicaulis, United States; inputs DBH + Height; DBH 15.24–60.45 cm; 36 trees.

2. Westfall et al. 2024 (same genus): Fitted on the genus Pinus; 154–1,915 trees across all species; DBH 2.54–99.06 cm; Read from the original paper.
   - [NSVB pine spp., species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-spp-volume/), Westfall et al. 2024: Pinus, United States; inputs DBH + Height; DBH 2.54–99.06 cm; 1,915 trees.
   - [NSVB pine spp., Subarctic Division (130): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-spp-130-volume/), Westfall et al. 2024: Pinus, United States; inputs DBH + Height; DBH 2.54–53.59 cm; 1,723 trees.
   - [NSVB pine spp., Warm Continental Regime Mountains (M210): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-spp-m210-volume/), Westfall et al. 2024: Pinus, United States; inputs DBH + Height; DBH 6.1–99.06 cm; 154 trees.