# Chave et al. 2014: Improved allometric models to estimate the aboveground biomass of tropical trees

Chave, J., Réjou-Méchain, M., Búrquez, A., et al. (2014). Improved allometric models to estimate the aboveground biomass of tropical trees. Global Change Biology, 20(10), 3177–3190.

- DOI: https://doi.org/10.1111/gcb.12629
- Access: paywalled
- Copy we read: https://forestgeo.si.edu/sites/default/files/aboveground_biomass_protocol_accessible.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-01
- Page: https://treeallometry.org/sources/chave-2014/

## Equations from this source (4)

### Pantropical AGB with height (Eq. 4)

Aboveground biomass for Tropical trees (58 sites), Pantropical. Inputs: Wood density + DBH + Height. DBH 5–212 cm. 4,004 trees.

As printed (Eq. 4, p. 3182):

> AGBest = 0.0673 × (ρD²H)^0.976

Page: https://treeallometry.org/equations/chave-2014-eq4/

### Pantropical AGB with height, exponent fixed at 1 (Eq. 5)

Aboveground biomass for Tropical trees (58 sites), Pantropical. Inputs: Wood density + DBH + Height. DBH 5–212 cm. 4,004 trees.

As printed (Eq. 5, p. 3182):

> AGBest = 0.0559 × (ρD²H)

Page: https://treeallometry.org/equations/chave-2014-eq5/

### Pantropical AGB without height, with stress index E (Eq. 7)

Aboveground biomass for Tropical trees (58 sites), Pantropical. Inputs: E + Wood density + DBH. DBH 5–212 cm. 4,004 trees.

As printed (Eq. 7, p. 3183):

> AGBest = exp[−1.803 − 0.976E + 0.976 ln(ρ) + 2.673 ln(D) − 0.0299[ln(D)]²]

Page: https://treeallometry.org/equations/chave-2014-eq7/

### Pantropical height–diameter model with stress index E (Eq. 6a)

Height for Tropical trees (58 sites), Pantropical. Inputs: E + DBH. DBH 5–212 cm.

As printed (Eq. 6a, p. 3183):

> ln(H) = 0.893 − E + 0.760 ln(D) − 0.0340[ln(D)]²

Page: https://treeallometry.org/equations/chave-2014-eq6a/