medfate (version 0.8.2)

Plant values: Plant description functions

Description

Functions to calculate attributes of plants in a forest object.

Usage

plant_basalArea(x)
plant_largerTreeBasalArea(x)
plant_characterParameter(x, SpParams, parName)
plant_cover(x)
plant_crownBaseHeight(x, SpParams)
plant_crownLength(x, SpParams)
plant_crownRatio(x, SpParams)
plant_density(x, SpParams)
plant_equilibriumLeafLitter(x, SpParams, AET = 800)
plant_equilibriumSmallBranchLitter(x, SpParams, 
                                   smallBranchDecompositionRate = 0.81)
plant_foliarBiomass(x, SpParams, gdd = NA)
plant_fuel(x, SpParams, gdd = NA, includeDead = TRUE)
plant_height(x)
plant_ID(x)
plant_LAI(x, SpParams, gdd = NA)
plant_parameter(x, SpParams, parName)
plant_phytovolume(x, SpParams)
plant_species(x)
plant_speciesName(x, SpParams)

Arguments

x

An object of class forest.

SpParams

A data frame with species parameters (see SpParamsMED).

parName

A string with a parameter name.

gdd

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

AET

Actual annual evapotranspiration (in mm).

smallBranchDecompositionRate

Decomposition rate of small branches.

includeDead

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

Value

A vector with values for each plant of the input forest object:

• plant_basalArea: Tree basal area (m2/ha).

• plant_largerTreeBasalArea: Basal area (m2/ha) of trees larger (in diameter) than the tree. Half of the trees of the same record are included.

• plant_characterParameter: The parameter values of each plant, as strings.

• plant_cover: Shrub cover (in percent).

• plant_crownBaseHeight: The height corresponding to the start of the crown (in cm).

• plant_crownLength: The difference between crown base height and total height (in cm).

• plant_crownRatio: The ratio between crown length and total height (between 0 and 1).

• plant_density: Plant density (ind/ha). Tree density is directly taken from the forest object, while the shrub density is estimated from cover and height by calculating the area of a single individual.

• plant_equilibriumLeafLitter: Litter biomass of leaves at equilibrium (in kg/m2).

• plant_equilibriumSmallBranchLitter: Litter biomass of small branches (< 6.35 mm diameter) at equilibrium (in kg/m2).

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

• plant_fuel: Fine fuel load (in kg/m2).

• plant_height: Total height (in cm).

• plant_ID: Cohort coding for simulation functions (concatenation of 'T' (Trees) or 'S' (Shrub), cohort index and species index).

• plant_LAI: Leaf area index (m2/m2).

• plant_parameter: The parameter values of each plant, as numeric.

• plant_phytovolume: Shrub phytovolume (m3/m2).

• plant_species: Species identity integer (indices start with 0).

• plant_speciesName: String with species taxonomic name (or a functional group).

See Also

spwb, forest, summary.forest

Examples

# NOT RUN {
#Default species parameterization
data(SpParamsMED)

#Load example plot
data(exampleforest)

#A short way to obtain total basal area
sum(plant_basalArea(exampleforest), na.rm=TRUE)

#The same forest level function for LAI
sum(plant_LAI(exampleforest, SpParamsMED))

#The same forest level function for fuel loading
sum(plant_fuel(exampleforest, SpParamsMED))

#Summary function for 'forest' objects can be also used
summary(exampleforest, SpParamsMED)

plant_speciesName(exampleforest, SpParamsMED)

plant_ID(exampleforest)
# }