In this thesis, we analyzed the increment of Norway spruce (Picea abies) depending on growing conditions. For this pupose 12 plots were selected. On the plots the trees were measured and increment cores obtained for the last 10 years. For the dominant trees cores to the pith were taken. Increment cores were then analyzed using the program WinDENDRO. Growing stock was the highest in the sinkholes and the lowest on slopes. On most plots the variability of the age and tree dimensions was high. Radial and basal area increment was analyzed for a period of 5 years and 10 years. By increasing the breast diameter (1.3 m from the ground), the radial increment of the last 10 years increases, while with the age decreases. As regards basal area increment, it increases with increasing breast diameter. With the age of the trees and with a greater average distance between the trees in the plot the basal area increment is decreasing. The suppressed trees have lower increments, as well as trees on the slopes compared to sinkholes.
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