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Biomass equations for Spanish hardwood species

eq_biomass_ruiz_peinado_2012.Rd

Allometric equations adjusted for Spanish hardwood species

Usage

eq_biomass_ruiz_peinado_2012(species, component = "stem", return_rmse = FALSE)

Arguments

species

A character string specifying the scientific name of the tree species. It can be a column name if all the species are included in this model. See Details for available species.

component

A character string specifying the tree component for biomass calculation (e.g., "tree", "stem", "branches"). See Details.

return_rmse

A logical value. If TRUE, the function returns the root mean squared error (RMSE) of the selected model instead of the biomass value.

Value

A ModelBiomass object containing the configured model parameters and expressions.

Details

Supported species (13):

Alnus glutinosa, Castanea sativa, Ceratonia siliqua, Eucalyptus globulus, Fagus sylvatica, Fraxinus angustifolia, Olea europaea, Populus x euramericana, Quercus canariensis, Quercus faginea, Quercus ilex, Quercus pyrenaica, Quercus suber

Available components:

Aboveground / belowground groups (summed automatically):

  • "AGB" — total aboveground biomass

  • "BGB" — total belowground biomass (roots)

  • "tree" — total tree biomass (AGB + BGB)

Tree structural groups:

  • "stem" — stem wood

  • "branches" — all branch fractions combined

  • "roots" — roots (equivalent to BGB)

Individual tree components (species availability varies):

  • "stem and thick branches" — stem together with branches > 7 cm

  • "thick branches" — branches > 7 cm

  • "thick and medium branches" — branches > 2 cm

  • "medium branches" — branches 2–7 cm

  • "small branches" — branches 0.5–2 cm

  • "small branches and leaves" — branches < 2 cm including leaves

  • "medium branches, small branches and leaves" — branches < 7 cm including leaves

Note that Eucalyptus globulus does not have a separate BGB equation (requesting "BGB" or "roots" will fail, though "tree" still works via its pre-summed formula).

Users can check all available species and components in the biomass_models dataset provided by the library.

See also

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

Examples

## Aboveground biomass for Quercus suber
eq_biomass_ruiz_peinado_2012("Quercus suber", "AGB")
#> <silviculture::ModelBiomass>
#>  @ equation  : chr "ruiz-peinado-2012"
#>  @ species   : chr "Quercus suber"
#>  @ component : chr "AGB"
#>  @ expression:'data.frame':	4 obs. of  2 variables:
#>  .. $ expression: chr  "0.00525 * d^2 * h + 0.278 * d * h" "0.0135 * d^2 * h" "0.127 * d * h" "0.0463 * d * h"
#>  .. $ species   : chr  "Quercus suber" "Quercus suber" "Quercus suber" "Quercus suber"
#>  @ url       : chr "http://dx.doi.org/10.5424/fs/2112211-02193"
#>  @ obs       : chr "Diameter is assumed to in centimeters, and height is assumed to be in meters"
#>  @ params    :List of 3
#>  .. $ return_rmse: logi FALSE
#>  .. $ comp       : chr [1:4] "stem" "thick branches" "medium branches" "small branches and leaves"
#>  .. $ rmse       : num [1:4] 66.87 110.76 26.47 8.55