silv_predict_biomass: Calculate Tree Biomass

In silviculture: Utility Functions for Forest Inventory and Silviculture

Calculate Tree Biomass

Description

Computes the biomass of a tree species using species-specific allometric equations (in kg). Currently, only equations for Spain are available.

Usage

silv_predict_biomass(
  diameter = NULL,
  height = NULL,
  model,
  ntrees = NULL,
  quiet = FALSE
)

Arguments

diameter	A numeric vector of tree diameters (in cm).
height	A numeric vector of tree heights (in m).
model	A function. A function with the structure eq_biomass_*() with additional arguments depending on the model used.
ntrees	An optional numeric value indicating the number of trees in this diameter-height class. Defaults to 1 if NULL.
quiet	A logical value. If TRUE, suppresses any informational messages.

Details

The function estimates biomass using validated allometric models available in the dataset biomass_models. The available models include:

• eq_biomass_ruiz_peinado_2011(): Developed for softwood species in Spain.

• eq_biomass_ruiz_peinado_2012(): Developed for hardwood species in Spain.

Users can check the list of supported species and their corresponding components in biomass_models.

If you would like to suggest additional models, please open a new issue on GitHub.

Value

A numeric vector

See Also

biomass_models, eq_biomass_montero_2005(), eq_biomass_dieguez_aranda_2009(), eq_biomass_ruiz_peinado_2011(), eq_biomass_ruiz_peinado_2012(), eq_biomass_manrique_2017(), eq_biomass_menendez_2022(), eq_biomass_cudjoe_2024()

Examples

# Calculate biomass for a single tree
silv_predict_biomass(
  diameter = 45,
  height   = 22,
  model    = eq_biomass_ruiz_peinado_2011("Pinus pinaster")
)

silviculture documentation built on Nov. 5, 2025, 7:13 p.m.