nsur2: Component biomass functions

In TapeS: Tree Taper Curves and Sorting Based on 'TapeR'

Component biomass functions

Description

evaluation of the component biomass functions fit by nonlinear seemingly unrelated regression (NSUR) to estimate absolute or relative component mass

Usage

nsur2(spp, dbh, ht)

Arguments

spp	vector of species code for biomass component function of interval [1;8]; see BaMap for mapping of species model codes
dbh	vector of diameter in breast height; in centimeter
ht	vector of tree heights, in meter

Details

simple function from Vonderach et al. (2018) to calculate component biomass; species mapping as in TapeS::BaMap(, type=7)

Value

a numeric matrix holding component biomass

References

Vonderach, C., G. Kändler and C. F. Dormann (2018). "Consistent set of additive biomass functions for eight tree species in Germany fit by nonlinear seemingly unrelated regression." Annals of Forest Science 75(2): 49. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/s13595-018-0728-4")}

Examples

nsur2(spp = c(1, 6),
      dbh = c(30, 30),
      ht = c(25, 27))

TapeS documentation built on April 3, 2025, 11:09 p.m.