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Srovnání citlivosti letokruhových řad jedle bělokoré (Abies alba) a smrku ztepilého (Picea abies) vůči klimatickým parametrům
 Jakubcová, Vanda
The presented thesis deals with tree ring research of the Norway spruce (Picea abies) and the European silver fir (Abies Alba) in the area of Czech State Forest (Janovice – organizational unit). The goal of the study was to create as long chronologies as possible from living trees of Norway spruce and European silver fir and compare the sensitivity of radial growth to climate parameters (average monthly/seasonal temperatures and average monthly/seasonal precipitation) between these two woody plant species. Tree cores were sampled by using Pressler borer from the selected individuals of studied tree species. The data were processed by standard dendrochronological approaches (e.g. visual and statistical synchronization, cross-dating, age-trend standardization, climate-growth response analysis). The analysis of climate-growth responses showed that high temperatures in the spring and low temperatures with available precipitation in June are key for radial growth of Norway spruce in studied site. In contrast, European silver fir showed a higher sensitivity to precipitation before the beginning of the growing season (February) and in summer (July). Both European silver fir and Norway spruce showed increasing sensitivity to high temperatures and precipitation since 1980.
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