# Westfall et al. 2024: A national-scale tree volume, biomass, and carbon modeling system for the United States

Westfall, J.A., Coulston, J.W., Gray, A.N., Shaw, J.D., Radtke, P.J., Walker, D.M., Weiskittel, A.R., et al. (2024). A national-scale tree volume, biomass, and carbon modeling system for the United States. Gen. Tech. Rep. WO-104. Washington, DC: USDA Forest Service. 37 p.

- DOI: https://doi.org/10.2737/WO-GTR-104
- Access: open access
- Copy we read: https://research.fs.usda.gov/download/treesearch/66998.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-01
- Page: https://treeallometry.org/sources/westfall-2024/

## Equations from this source (2)

### NSVB white oak, Hot Continental Mountains (M220), segmented model, D < 11 in (27.94 cm)

Aboveground biomass, without leaves for Quercus alba, United States. Inputs: DBH + Height. DBH up to 27.94 cm.

As printed (Example 4, p. 24):

> AGBPredicted = 0.024470323124 × 11^(1.93799905037 – 1.886819489967) × 18.1^1.886819489967 × 65^1.403264431619 = 2285.319903933610

Page: https://treeallometry.org/equations/westfall-2024-quercus-alba-m220-small/

### NSVB white oak, Hot Continental Mountains (M220), segmented model, D ≥ 11 in (27.94 cm)

Aboveground biomass, without leaves for Quercus alba, United States. Inputs: DBH + Height. DBH from 27.94 cm.

As printed (Example 4, p. 24):

> AGBPredicted = 0.024470323124 × 11^(1.93799905037 – 1.886819489967) × 18.1^1.886819489967 × 65^1.403264431619 = 2285.319903933610

Page: https://treeallometry.org/equations/westfall-2024-quercus-alba-m220-large/