Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

The annual height increment of Scots pine exerts a direct influence on the determination accuracy of the tree and the stand volume increment. It is considered as a major dendrometric characteristic. However, the growth of trees depends on the meteorological conditions in the year that preceded increments, as well as in the given incremental year. In this study the relationship between annual increments, and temperature was examined. For this purpose correlation coefficients between monthly temperature and mean annual height increments were designated. Next, the forward stepwise regression procedure was used. For this purpose the SAS software package was applied. On the basis of the presented research it was found that the Scots pine increments are greater when summer months, both of the pervious year and of the given vegetation season, are cooler and when March is warmer.