addtreedim: Compute tree dimensions (tree, trunk and crown height, crown...

In VincyaneBadouard/LoggingLab: An R Package to Simulate Forest Logging

Compute tree dimensions (tree, trunk and crown height, crown diameter, harvestable volume, wood density, and AGB)

Description

Compute tree dimensions (tree, trunk and crown height, crown diameter, harvestable volume, wood density, and AGB) from its Diameter at Breast Height (DBH)

Usage

addtreedim(
  inventory,
  volumeparameters,
  crowndiameterparameters = ParamCrownDiameterAllometry,
  advancedloggingparameters = loggingparameters()
)

Arguments

inventory	Input inventory (see the inputs formats and metadata in the vignette) (data.frame)
volumeparameters	Parameters of the tree volume tables (in the same format of ForestZoneVolumeParametersTable) used to compute the harvestable volume of each tree, depending on its geographic zone if several locations (data.frame)
crowndiameterparameters	Parameters of crown diameter allometry (in the same format of ParamCrownDiameterAllometry) used to compute the crown diameter of each tree, depending on its DBH (Diameter at Breast Height) and its species, genus or family. (data.frame)
advancedloggingparameters	Other parameters of the logging simulator loggingparameters (list)

Details

'addtreedim' compute some tree dimensions with the 'advancedloggingparameters' argument:

• Tree height (in m) ('TreeHeightAllometry')

• Tree harvestable volume (m3) ('TreeHarvestableVolumeAllometry')(French Guiana ONF)

• Trunk height (in m) ('TrunkHeightAllometry')

• Crown height (in m)

• Crown diameter (in m) ('CrownDiameterAllometry') (Aubry-Kientz et al.2019)

• Wood density (g/cm3) (by the BIOMASS package)

• Tree above-ground biomass (AGB) (in ton) (by the BIOMASS package)

'Taxo': the level at which the CrownDiameter was calculated. 'levelWD': the level at which the WoodDensity was assigned by the BIOMASS package.

Value

The inventory (data.frame) with additional variables: TreeHeight (m), TreeHarvestableVolume (m^3), TrunkHeight (m), CrownHeight (m), CrownDiameter (m), estimated 'WoodDensity' (g/cm^3) and tree above-ground biomass ('AGB') (in Mg)

Examples

data(Paracou6_2016)
data(ForestZoneVolumeParametersTable) # The volume parameters data in the global environment
data(ParamCrownDiameterAllometry)

if (!("DBH" %in% names(Paracou6_2016))) {
tibble::add_column(Paracou6_2016, DBH = NA) #if DBH doesn't exist create it
Paracou6_2016$DBH = Paracou6_2016$CircCorr/pi} # and calculate it
Paracou6_2016 <- dplyr::filter(Paracou6_2016, DBH >= 10)

addtreedim(Paracou6_2016, volumeparameters = ForestZoneVolumeParametersTable)

VincyaneBadouard/LoggingLab documentation built on Oct. 16, 2024, 9:42 p.m.