The main objective of the study was dendroclimatical exploration of climate- growth relationships in 5th forest vegetation zone in Poľana Mts.. The question about recent climate change and its different influence on the growth of the trees is very important nowadays. In the diploma thesis we have processed the issue of dendrochronology, dendroclimatology, climatic change and tree- ring growth. The main goal of the study was to investigate the radial growth responses of three species (Norway spruce, European beech and Silver fir) to climate change. We need both tree- ring data and climatic data to compare and find information about dendroclimatic relationships of the most dominant species in 5th forest vegetation zone. Mean elevation of studied forest stands is at 915 a.s.l.. Sampled trees were 25- 175 years old, representing forests stands in the caldera of extinct stratovolcano Poľana. We studied relationships between the annual tree- ring widths and climatic characteristic (mean monthly temperatures and monthly precipitations), which we had for period 1901- 2016. Quantification and analysis of growth changes was done for two time periods: 1961- 1990 (reference period) and 1991- 2016 (recent climate change period). The chronologies of Norway spruce and European beech suggest that the growth conditions are worse in the last study period (1991- 2016). It is caused by negative effects of increased temperatures on the radial increments. The chronology of European silver fir has, in the last study period, an increased trend of the tree- ring index. Higher temperatures and precipitations have positive effects on the better radial growth of European silver fir. The chronologies of these three species have common minimal pointer- years in 1980, 2000 and 2013.