# Pinus flexilis

Pinaceae. 8 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 0.42 g/cm³, estimated from 4 samples in 3 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. 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.

2. 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. 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; 17 trees; DBH 10.92–47.75 cm; Read from the original paper.
   - [NSVB limber pine, species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-pinus-flexilis-volume/), Westfall et al. 2024: Pinus flexilis, United States; inputs DBH + Height; DBH 10.92–47.75 cm; 17 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.