Pinus caribaea / Aboveground biomass
Pinus caribaea total aboveground biomass, sum of simultaneous component models
Aboveground biomassPinus caribaea var. hondurensis · PinaceaeBrazilplantationRead from the original paper
© Ben Machado · CC BY · iNaturalistEquation
As printed (Table 5)
bstotal = bsneedles+bsbranches+bstrunk
In this library's units, ready to compute (kg)
Aboveground biomass = -34.812 + 0.707*D + 0.054*D^2 + 1.461*H + 39.377*rhoD- Diameter at breast height (1.3 m), cm
H- Total tree height, m
rho- Wood density (oven-dry mass / green volume), g/cm³
Ten-year-old plantation, 3 m x 3 m spacing, 20 trees. The paper defines the total as the sum of the three component equations and reports R2adj 0.86 and Syx% 19.93; the expression here is that sum written out, and the canonical form just collects the printed coefficients. Includes needles, branches and trunk, so nothing is excluded.
Source
doi:10.1590/2179-8087.045216 · Open access · copy we read
Twenty (20) trees from the experimental area of the State University of Southwest Bahia (UESB), Vitória da Conquista, Bahia, Brazil, were measured and weighed
with a minimum value of 8.20 cm and a maximum of 23.70 cm; average total height of 11.06 m, ranging from 6.40 m to 14.20 m
R2adj 0.86
- Trees measured
- 20
- DBH range
- 8.2–23.7 cm
- Height range
- 6.4–14.2 m
- R²
- 0.86
- Method
- Simultaneous (SUR) linear regression ensuring additivity; R2 reported is adjusted R2
- Where
- Experimental area of UESB, Vitória da Conquista, Bahia
- Last checked
- 2026-11-02
Calculate
Height from
11.9
Aboveground biomass (kg)
5.6
Carbon (kg), ×0.47
20.5
CO₂e (kg), ×44/12
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
Checks this equation passes
On every build, the library's form and the paper's own form (in its units) must both give these values within 1%.
| Inputs | Expected | We get | From |
|---|---|---|---|
| D = 12, H = 9, rho = 0.44 | 11.9 | 11.9 | Computed from the printed form computed from the published form |
| D = 20, H = 13, rho = 0.5 | 39.6 | 39.6 | Computed from the printed form computed from the published form |
Related
- Tropical pines AGB from DBH (Eq. 3.1.8 / 3.2.8) · Brown 1997 · DBH
- Total aboveground biomass, Pinus tecunumanii shade trees, exponential DBH+H · Chalupová et al. 2026 · DBH + Height
- Total aboveground biomass, Pinus tecunumanii shade trees, power-law DBH+H · Chalupová et al. 2026 · DBH + Height
- North American taxa group: Pinus ≥ 0.45 spg (Table 5) · Chojnacky et al. 2014 · DBH
- Pinus cembroides, additive system S2 (D and H): total aboveground biomass (sum of components) · Cuevas Cruz & Aquino Ramírez 2020 · DBH + Height
- Pinus brutia total biomass, Lebanon (Eq. 37) · de-Miguel et al. 2014 · DBH + Height
- Pinus brutia total biomass, Lebanon (Eq. 38) · de-Miguel et al. 2014 · DBH
- Pinus brutia total biomass, Middle East (Eq. 47) · de-Miguel et al. 2014 · DBH
- Pinus caribaea branch biomass from DBH (simultaneous fit) · same paper · Branch biomass
- Pinus caribaea needle biomass from DBH and height (simultaneous fit) · same paper · Foliage biomass
- Pinus caribaea trunk (stem with bark) biomass from DBH, height and wood density (simultaneous fit) · same paper · Stem biomass