Equations / Aboveground biomass
Pinus patula total aboveground biomass from DBH (Tlaxco, Tlaxcala)
As printed (Resultados, Estimación de biomasa, p. 29)
In this library's units, ready to compute (kg)
Aboveground biomass = 0.0357 * D^2.6916D- Diameter at breast height (1.3 m), cm
Tabla 2 prints predicted total biomass at DN 5-65 cm; four rows reproduce within rounding. Decimal comma in the original. Biomass includes stem (stump cubed as a truncated cone), branches and foliage. The paper does not say whether the stand is natural or planted: trees came from a stand under forest management (aprovechamiento), recorded here as natural. The paper also prints a carbon equation (CC = 0,021 * DN 2.6451), not stored because it is not a biomass equation.
doi:10.21829/myb.2007.1311233 · Open access · copy we read
Y = b * Xk (1) ... donde Y es la biomasa aérea (kg), X es el DN (cm)
Se seleccionaron 25 árboles de P. patula
El DN de los árboles muestreados varió en un rango de 6,7 a 64,1 cm
coeficiente de determinación alto (R2 =0,98)
- Trees measured
- 25
- DBH range
- 6.7–64.1 cm
- R²
- 0.98
- Method
- power model Y = b*X^k fitted to total aboveground dry biomass (stem, branches, foliage); no correction factor stated
- Where
- Ejido Mariano de Matamoros, Tlaxco, Tlaxcala
- Last checked
- 2026-11-02
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
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 = 10 | 17.6 | 17.5 | Value printed in the paper Tabla 2, columna 'Presente estudio' (biomasa total, kg), p. 31 |
| D = 20 | 113.4 | 113.4 | Value printed in the paper Tabla 2, columna 'Presente estudio' (biomasa total, kg), p. 31 |
| D = 50 | 1,335 | 1,335 | Value printed in the paper Tabla 2, columna 'Presente estudio' (biomasa total, kg), p. 31 |
| D = 65 | 2,706 | 2,706 | Value printed in the paper Tabla 2, columna 'Presente estudio' (biomasa total, kg), p. 31 |
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