Prediction of total above-ground biomass for trees defined via species, dbh, d03 and height
biomass(spp, d13, d03, h)
a vector of total above-ground biomass
vector of species code for biomass function [1;18]
vector of diameter in breast height in centimeter
vector of diameter in 30% of tree height in centimeter
vector of height of trees
code taken from BDAT (Koeff.f).
Riedel, T. and G. Kaendler (2017). "Nationale Treibhausgasberichterstattung: Neue Funktionen zur Schätzung der oberirdischen Biomasse am Einzelbaum." Forstarchiv 88(2): 31-38.