Polylepis sericea / Aboveground biomass

Polylepis sericea AGB from DBH (Tabla 4, power form)

Aboveground biomassPolylepis sericea · RosaceaePerunaturalRead from the original paper

Equation

As printed (Tabla 4, p. 112 (species name misspelt in the table; exponent printed as superscript))

Ploylepis sericea M = 0.1135 DAP2.025

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

Aboveground biomass = 0.1135 * D^2.025

D: Diameter at breast height (1.3 m), cm

M is aboveground biomass in kg. Trees were air-dried in shade to constant weight, not oven-dried. Harvested trees in Tabla 2 span DAP 5,8–18,0 cm. No log-bias correction factor applied by the authors.

Source

Ramírez Apolinario, E., & Peláez Peláez, F. (2018). Modelo alométrico para estimar el potencial de captura de carbono en Polylepis spp en Poccrac, Ancash 2016. Revista de Investigación de la Universidad Le Cordon Bleu, 5(1), 105–115.

https://revistas.ulcb.edu.pe/index.php/REVISTAULCB/article/view/100 · Open access · copy we read

Ln(M) = -2.1757+ 2.025 Ln(DAP)

Equation · Tabla 4, p. 112

Polylepis sericea -2.1757 2,0250 15 0,970 0,941 0,934 0,041

R² · Tabla 3, p. 112

La medida del DAP de los árboles de Polylepis seleccionados están dentro del rango que va desde 5 cm a 20cm.

Smallest DBH · Resumen, p. 105

Trees measured: 15
DBH range: 5–20 cm
R²: 0.941
Method: OLS on ln(M) vs ln(DAP) in SPSS 22, back-transformed without correction factor
Where: Poccrac, Ticapampa district (Recuay), Áncash, Peru; native high-Andean Polylepis forest
Last checked: 2026-11-01

Calculate

DBH (cm)

17.4

Aboveground biomass (kg)

8.17

Carbon (kg), ×0.47

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	17.4	17.4	Computed from the printed form computed from the published power form; Tabla 2 tree 2 (DAP 12,0 cm) weighed 17,0 kg
D = 18	39.5	39.5	Computed from the printed form computed from the published power form

Report a problem with this equation · JSON

Polylepis racemosa AGB from stem diameter at 50 cm (model 6) · Herrera Vásquez 2022 · D50
Polylepis incana AGB from DBH (Tabla 4, power form) · Ramírez Apolinario & Peláez Peláez 2018 · DBH
Polylepis incana AGB from DBH (Tabla 4, power form) · same paper · Aboveground biomass

Compare these curves

Polylepis sericea AGB from DBH (Tabla 4, power form)

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