# Vachellia tortilis

12 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 0.73 g/cm³, estimated from 7 samples in 4 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. Eshete et al. 2026 (this species): Fitted on this species; 15 trees; Read from the original paper.
   - [Vachellia tortilis total aboveground biomass (Model 2)](https://treeallometry.org/equations/eshete-2026-agb-m2/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30; 15 trees.
   - [Vachellia tortilis total aboveground biomass (Model 3)](https://treeallometry.org/equations/eshete-2026-agb-m3/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + Height; 15 trees.
   - [Vachellia tortilis total aboveground biomass (Model 4)](https://treeallometry.org/equations/eshete-2026-agb-m4/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30 + Height; 15 trees; not fully checked.
     > Not fully checked: Section 2.3.3 says M4 requires only stump diameter, whereas Tables 1, 5 and 6 and Fig. 4 include total height. This record uses the explicitly parameterized equation in Table 5; confirm the conflicting description with the authors before relying on it.

## Stem biomass

1. Eshete et al. 2026 (this species): Fitted on this species; 15 trees; Read from the original paper.
   - [Vachellia tortilis stem biomass (Model 2)](https://treeallometry.org/equations/eshete-2026-stem-m2/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30; 15 trees; not fully checked.
     > Not fully checked: The multiplier is printed as 0.001 with only one significant digit; obtain the unrounded coefficient before relying on precision.
   - [Vachellia tortilis stem biomass (Model 3)](https://treeallometry.org/equations/eshete-2026-stem-m3/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + Height; 15 trees.
   - [Vachellia tortilis stem biomass (Model 4)](https://treeallometry.org/equations/eshete-2026-stem-m4/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30 + Height; 15 trees; not fully checked.
     > Not fully checked: The multiplier is printed as 0.001 with only one significant digit; obtain the unrounded coefficient before relying on precision.

## Branch biomass

1. Eshete et al. 2026 (this species): Fitted on this species; 15 trees; Read from the original paper.
   - [Vachellia tortilis branch biomass (Model 3)](https://treeallometry.org/equations/eshete-2026-branch-m3/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + Height; 15 trees.
   - [Vachellia tortilis branch biomass (Model 4)](https://treeallometry.org/equations/eshete-2026-branch-m4/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30 + Height; 15 trees.
   - [Vachellia tortilis branch biomass (Model 5)](https://treeallometry.org/equations/eshete-2026-branch-m5/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + Height; 15 trees; not fully checked.
     > Not fully checked: Table 5 gives M5 as a DBH-and-height model, while Table 1 defines M5 as stump diameter squared. This record uses Table 5; confirm the intended form and coefficients with the authors before relying on it.

## Foliage biomass

1. Eshete et al. 2026 (this species): Fitted on this species; 15 trees; Read from the original paper.
   - [Vachellia tortilis combined leaf and twig biomass (Model 5)](https://treeallometry.org/equations/eshete-2026-foliage-m5/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + Height; 15 trees; not fully checked.
     > Not fully checked: Table 5 gives M5 as a DBH-and-height model, while Table 1 defines M5 as stump diameter squared. This record uses Table 5; confirm the intended form and coefficients with the authors before relying on it.
   - [Vachellia tortilis combined leaf and twig biomass (Model 6)](https://treeallometry.org/equations/eshete-2026-foliage-m6/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs D30 + Height; 15 trees.
   - [Vachellia tortilis combined leaf and twig biomass (Model 7)](https://treeallometry.org/equations/eshete-2026-foliage-m7/), Eshete et al. 2026: Vachellia tortilis, Ethiopia; inputs DBH + D30; 15 trees; not fully checked.
     > Not fully checked: Table 1 gives M7 the same exponent on both diameters, whereas Table 5 and Fig. 6B give DBH exponent 2.073 and stump-diameter exponent −1.203. This record uses Table 5; confirm the conflicting model specification with the authors before relying on it.