Beskydy 2015, 8, 9-25
Modelling of biomass fractions and radial increment of the selected Norway spruce forest stands in the region of the Moravian-Silesian Beskids
Norway spruce (Picea abies /L./ Karst.) appears to be the most important conifer species in our mountain regions. Statistically significant differences were determined in the diameter and height increments for particular types of branching. There were verified regression functions for estimation biomass fractions. Using model calculations, fractions of above-ground and underground biomass were determined for selected permanent sample plots of the Moravian-Silesian Beskids from lower altitudes. Statistically significant differences were determined in the diameter and height increments for particular types of branching. From the branching type 1.5 (fascicle/comb-shaped) across type 2 (fascicle-shaped) and type 2.5 (fascicle/plate-shaped to type 3 (plate-shaped) both d.b.h., total tree height and radial increment decrease. For a man-made Norway spruce ecosystem regression functions determined by fitting the data from 45 sample spruce trees were derived (at Drahanská Upland) and used also for sample plots in Beskids.
Keywords
Norway spruce, biomass fractions, modelling of biomass flow, type of branching, radial increment.
