View source: R/mortalityTree.R
mortalityTree | R Documentation |
#' 'Model for survival. Original model by Eid & Tuhus (2005). Later (april 2007) the model was modified to a more simple model and to include basal area. Eid, T. & Tuhus, E., (2005). Models for individual tree mortality in Norway. For. Ecol. Manage. 154: 69-84
mortalityTree(d, sp, BA)
d |
Diameter of the single tree at breast height (cm), Diameter (cm)(Publication uses cm, parameter estimate adjusted) |
BA |
Stand basal area (m2ha-1) |
species |
species code (1=spruce, 2= pine, 3= brich, 4 = other broadleaves ) |
Based on SAS code from 'Ole Martin Bollandsås, 16.01.2007
5 year mortality rate
Hans Ole Ørka hans.ole.orka@gmail.org
Vestjordet 1959,Brantseg 1959,Næsset 1994a, Næsset 1995a,b
sp <- c(1,1,2,4)
d <- c(20,25,10,5)
BA <- 14
mortalityTree(d,sp,BA)
BA <- c(14,14,10,10)
mortalityTree(d,sp,BA)
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