Reakcia dubov voči klimatickým extrémom v prechodnej zóne dubových a bukových lesov

Abstract

Forest management might be threatened by declining health status of oaks in the transition zone between oak and beech forests, where drought is the most limiting factor. The aim of the presented paper is to assess the influence of selected climatic characteristics on the radial growth of oak trees with different stem diameter status in the beech-oak and oak-beech forest altitudinal zones within the forest growth area of Poľana Mt. and Zvolen Basin (Slovakia). Our results show that oaks with less favourable stem diameter position (Weisse’s middle stems) show slower radial growth, have less pronounced climatic precipitation signal and milder response to extreme climatic events. The findings potentially suggest that not only favourable tree species composition of stands, but also the stand structure can mitigate the negative impacts of climate change on forest growth.