Research results of the effect of climatic factors on the diameter increment of trees in Slovakia
2010
Petráš, R., National Forest Centre, Zvolen (Slovak Republic). Forest Research Institute | Mecko, J., National Forest Centre, Zvolen (Slovak Republic). Forest Research Institute
The aim of this paper is to present the results of research on the effect of basic climatic factors on radial increments of spruce, oak and beech trees in Slovakia. Correlation dependence of increment indexes on climatic factors was studied on annual rings orders of 455 trees of spruce, oak and beech. Average monthly temperatures are presented for the years 1931-2005, and total monthly precipitation for the years 1901-2005. Estimated correlation coefficients with values 0.2-0.5 are statistically significant. Examined trees react positively, in particular to precipitation in June and July. Reaction of spruce is the strongest. Precipitation from second half of vegetation period of previous year has important influence too. Influence of higher temperatures during vegetation period on increment changes is mostly negative and statistically insignificant.
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