Stand values

Source: R/RcppExports.R, R/stand_metrics.R

Functions to calculate stand attributes of a forest object.

stand_basalArea(x, minDBH = 7.5)

stand_foliarBiomass(x, SpParams, gdd = NA_real_)

stand_fuelLoading(x, SpParams, gdd = NA_real_, includeDead = TRUE)

stand_LAI(x, SpParams, gdd = NA_real_, bounded = TRUE)

stand_dominantTreeDiameter(x, minDBH = 7.5)

stand_dominantTreeHeight(x, minDBH = 7.5)

stand_hartBeckingIndex(x, minDBH = 7.5)

stand_quadraticMeanTreeDiameter(x, minDBH = 7.5)

stand_dominantTreeSpecies(x, SpParams)

Arguments

x

An object of class forest.

minDBH

Minimum diameter at breast height (in cm) to include in estimation.

SpParams

A data frame with species parameters (see SpParamsMED).

gdd

Growth degree days (to account for leaf phenology effects).

includeDead

A flag to indicate that standing dead fuels (dead branches) are included.

bounded

A boolean flag to indicate that extreme values should be prevented (maximum tree LAI = 7 and maximum shrub LAI = 3)

Value

  • stand_basalArea: Stand basal area (m2/ha).

  • stand_dominantTreeDiameter: Dominant tree diameter, i.e the average diameter of the 100 widest trees (in cm).

  • stand_quadraticMeanTreeDiameter: Quadratic mean tree diameter, i.e. the diameter value corresponding to the current basal area and density.

  • stand_dominantTreeHeight: Dominant tree height, i.e the average height of the 100 tallest trees (in cm).

  • stand_hartBeckingIndex: Hart-Becking index.

  • stand_foliarBiomass: Standing biomass of leaves (in kg/m2).

  • stand_fuel: Stand fine fuel load (in kg/m2).

  • stand_LAI: Stand leaf area index (m2/m2).

  • stand_phytovolume: Stand shrub phytovolume (m3/m2).

Author

Miquel De Cáceres Ainsa, CREAF

Examples

#Default species parameterization
data(SpParamsMED)
  
#Load example plot
data(exampleforest)
    
#A short way to obtain total basal area
stand_basalArea(exampleforest)
#> [1] 25.0333