Topic: Biomass

Topic Description:

Functions for calculating above-ground tree biomass in CTFS plots.



File: biomass/biomass.CTFSdb.r

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Function: agb.model

Function Description: agb.model

Calculates biomass from density, height, and dbh. Requires just two parameters, following Chave (2005). The parameters can be changed, but the formula cannot be. Returns a vector of biomass as long as vector of dbh submitted. This is called by Chave.AGB in the standard calculation of biomass for CTFS R tables.

Function Arguments:

ArgumentDefault Value

Sample Usage:

agb.model(dbh=c(1,1,2),density=c(.6,.6,.5),height=c(2,3,4),param=c(.0501,1))


Function Source:

agb.model=function(dbh,density,height,param)
return(param[1]*(density*dbh^2*height)^param[2])