# Sorbus americana

Rosaceae. 2 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 0.54 g/cm³, estimated from 1 sample in 1 study 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 13 named species and others, this one included; Number of trees not stated; DBH 3–64 cm; Read from the original paper.
   - [North American taxa group: Cornaceae/Ericaceae/Lauraceae/Platanaceae/Rosaceae/Ulmaceae (Table 5)](https://treeallometry.org/equations/chojnacky-2014-mixed-hardwood/), Chojnacky et al. 2014: Cornaceae/Ericaceae/Lauraceae/Platanaceae/Rosaceae/Ulmaceae (Cornus florida, Nyssa aquatica, N. sylvatica, Arbutus menziesii, Oxydendrum arboreum, Umbellularia californica, Sassafras albidum, Platanus occidentalis, Amelanchier spp., Prunus pensylvanica, P. serotina, P. virginiana, Sorbus americana, Ulmus americana, U. spp.), United States; inputs DBH; DBH 3–64 cm.

## Foliage biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 7 trees; DBH 6.86–25.65 cm; Read from the original paper.
   - [NSVB American mountain-ash, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-sorbus-americana-foliage/), Westfall et al. 2024: Sorbus americana, United States; inputs DBH + Height; DBH 6.86–25.65 cm; 7 trees.