Tree Allometrics

Equations / Aboveground biomass

Mimosa hostilis, caatinga, DBH

Aboveground biomassMimosa hostilisBrazilnaturalRead from the original paper
No openly licensed photo yet
Equation

As printed (Table 2, p. 938)

M. hostilis: 0.3127*DBH2.1183 R2 0.9594

In this library's units, ready to compute (kg)

Aboveground biomass = 0.3127 * D^2.1183
D
Diameter at breast height (1.3 m), cm

Table 2 prints each equation as a*DGL^b or a*DBH^b with the exponent as superscript (flattened here with ^). Biomass is oven-dry aboveground plant biomass in kg (Table 2 title), diameters in cm. Wood dried at 60 C. Plants were cut at the base and the stump was included in the weighed biomass. Perimeters were converted to diameters assuming a circular shape; for branching below measuring height, branch areas were summed into one equivalent diameter. DGL is stem diameter at ground level, mapped to DRC.

Source
R2 0.9594
R² · Table 2, p. 938
Each species was represented by 30 individuals
Trees measured · Material and methods, p. 936
Trees measured
30
R²
0.9594
Method
power equation B = a*x^b (oven-dry aboveground biomass, kg)
Where
Santaluz (Bahia) and Petrolina (Pernambuco), Depressão Sertaneja, Brazilian semiarid
Last checked
2026-11-02
Calculate
9.457
Aboveground biomass (kg)
4.445
Carbon (kg), ×0.47
16.3
CO₂e (kg), ×44/12
0200400600800510152025303540DBH (cm)Aboveground biomass (kg)Aboveground biomass

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%.

InputsExpectedWe getFrom
D = 59.469.46Computed from the printed form
hand-computed from the published form
D = 1596.996.9Computed from the printed form
hand-computed from the published form

Report a problem with this equation · JSON

Related

Compare these curves