biomass.CTFSdb: Biomass for trees and stems using dbh allometry.
In forestgeo/ctfs: Tools for the Analysis of Forest Dynamics

Description Usage Arguments Details Value Examples

Calculate biomass from existing R-formatted tables for trees and stems using dbh allometry. By default, it uses the Chave (2005) equations.

biomass.CTFSdb(RStemTable, RTreeTable, whichtable = "tree",
  dbhunit = "mm", plot = "bci", wsgdata = wsg.ctfs2,
  forest = "moist", ht.param = NULL, htmodel = predht.asym,
  useChave = TRUE, cnsno = NULL, dbname = NULL, fullname = NULL,
  plotcode = NULL)

`dbhunit`	'cm' or 'mm', only used for basal area
`plot`	Character string giving the name of the plot where the data comes from (as it appears in the names of the R Analytical Tables).

Note that the standard downloads of R Analytical Tables, already has the agb column filled, calculated with this routine using the default parameters for moist forest.

This program can be used to repeat or redo the calculation. It can also be used for other tables, always requiring two tables: one with trees and one with all stems.

Calculations are done by AGB.ind and the subroutines it call.

An alternative option is to have AGB calculations already stored in the server's AGB database, setting useChave = FALSE. This function then looks up the AGB for each stem from the table named for the plot.

RStemTable: Name of table with one row per stem; must have dbh, species (column sp), treeID

RTreeTable: Name of table with one row per tree; must have dbh, species (column sp), treeID whichtable: Set to "tree" to return the entire tree table with agb, or to "stem" to return stem table dbhunit: Set to "mm", "cm", or "inch" plot: Name of plot, matching the plot name used in the wood-density table wsgdata: Name of R object having wood-density for species in all CTFS plots forest: Set to "moist", "dry", or "wet" to use the equations publshed in Chave (2005) for the 3 forest types ht.param: A vector of parameters for a formula relating tree height to dbh; if NULL, the biomass formula does not use height htmodel: Name of an R function that returns tree height giving a dbh and any number of parameters; if ht.param is NULL, htmodel is ignored.

If you need a dummy wood density table to feed the wsg argument see ?wsgdata_dummy().

The same table as submitted (either tree or stem), with a column agb added; if the agb column was already present, it is replaced.

## Not run: 
CTFSplot("bci","full",census=1) 

CTFSplot("bci","stem",census=1) 
attach("biomass/wsg.ctfs.Rdata") 
newtable = biomass.CTFSdb(
  RStemTable = bciex::bci12s1mini, 
  RTreeTable = bciex::bci12t1mini
)

## End(Not run)