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Analýza spontánní sukcese na kalamitní holině vzniklé na územním pracovišti Stožec (Národní park Šumava)
Štětina, Pavel
Bachelor thesis deals with spontaneous succession on the calamity clear-cut area in the National Park Šumava. Two transects were created, which were divided into 10 m plots. One transect was 50 m in spruce stand, one continue through the 50 m long clear-cut area, and was terminated 50 m in dry stand. The second transect was the same, but the length of the clear-cut area was 110 m. On the plots were found out to be naturally regeneration and mature trees. According to the results, the positioning of the individual trees varies depending on their light requirements. The most natural regeneration was found in dry vegetation, except for light-emitting trees, whose center of gravity lies on the clear-cut area.
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Forestry potential of Carpathian birch on extreme mountain sites
Skibková, Lucie ; Kuneš, Ivan (advisor) ; Ulbrichová, Iva (referee)
After a pollution calamity with its peak in the 70s-80s the Jizerské Mountains were quite fast reforested. The new generation of stands with spruce as a dominant species needs a differentiation of the species, age and structure. Not just the climatic conditions but also the predation pressure of hoofed game and rodents causes big difficulties to the possibility of enrichment of other tree species on some places. One of potentially suitable tree species in the acid and exposed mountain sites is Carpathian birch (Betula carpatica). This species is so far not well researched. The main aim of this thesis is to evaluate the prosperity of experimental planting of Carpathian birch. This planting was established in 2008 close to the hamlet Jizera in the locality of Panelová cesta. Other aims of this thesis are to follow up on former measurements on the research plot, to carry out another series of biometric investigation, to set the mortality, height and height increment and according to this research to evaluate the forestry potential of Carpathian birch on extreme mountain sites.
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Odrůstání kultur na kalamitních holinách horských poloh
Albrechtová, Petra
The work deals with the issue of regenerating clearings due to salvage felling at mountain altitudes. Development was monitored on research plots Sokol in the Hrubý Jeseník Mts. (15 plots) and Jizerka in the Jizerské Mts. (15 plots). The aim was to assess the developing young plantations of Norway spruce, European beech, European larch and Carpathian pubescent birch in particular, as well as of sycamore maple, European mountain ash and Silesian willow aged 9 -- 14 years after planting. The assessment was focused primarily on the mensurational variables of the tree species (height, root collar diameter, crown diameter, and their increments). Part of the work was to evaluate the condition of soil environment, nutrition, root system architecture and health of Norway spruce. The best growth was shown by European larch. By contrast, the use of sycamore maple, European mountain ash and Silesian willow did not prove well. The mixing of Norway spruce and European beech was demonstrated to have a significantly favourable influence on the growth of the two species. The root system was confined to humus horizons only and all individuals exhibited deformation into a tangle. Analyses of soil conditions revealed that the effect of liming had persisted even after 20 years and the nutritional condition of the trees pointed to the luxurious supply namely of calcium and magnesium.
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