CalcAGB: Estimate aboveground biomass of trees

In ForestPlots/BiomasaFP: BiomasaFP: Functions for analysing data downloaded from ForestPlots.net

Estimate aboveground biomass of trees

Description

CalcAGB estimates the aboveground biomass of each tree in the merged ForestPlots output dataset using the selected allometric equation. Height is estimated using height-diameter allometries using either Feldpausch et al. (2011) regional Weibull equation parameters, or parameters and allometric equation methods supplied using the height.data argument. This includes the option to use measured heights. See height.mod for details of implemented height-diameter equations and how to set up user defined ones. The function adds columns to the dataset with the biomass information for all alive trees. This function needs a dataset with the following information: PlotViewID, PlotID, TreeID, CensusNo, Diameter (DBH1-DBH4), Wood density (WD) and Allometric RegionID.The function assumes that the diameter used is DBH4, unless other DBH is selected. See ForestPlots.net documentation for more information.

Usage

CalcAGB(xdataset, dbh = "D4", height.data = NULL, AGBFun = AGBChv14)

Arguments

xdataset	a dataset for estimating biomass
dbh	Name of column containing tree diameter (DBH, in mm).
height.data	Dataframe containing model type and parameters for height diameter model. These are matched on to the xdataset object at tree level. If NULL (default), then regional height-diameter equations (from Felpaush et al. 2012) are used.
AGBFun	Allometric equation function to use when estimating AGB, for example AGBChv14.

Author(s)

Gabriela Lopez-Gonzalez, Martin Sullivan

References

Feldpausch TR, Banin L, Phillips OL, Baker TR, Lewis SL et al. 2011. Height-diameter allometry of tropical forest trees. Biogeosciences 8 (5):1081-1106. doi:10.5194/bg-8-1081-2011.

Chave J, Coomes DA, Jansen S, Lewis SL, Swenson NG, Zanne AE. 2009. Towards a worldwide wood economics spectrum. Ecology Letters 12(4): 351-366. http://dx.doi.org/10.1111/j.1461-0248.2009.01285.x

Zanne AE, Lopez-Gonzalez G, Coomes DA et al. 2009. Data from: Towards a worldwide wood economics spectrum. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.234

ForestPlots/BiomasaFP documentation built on April 28, 2023, 8:26 a.m.