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Dynamika přirozené obnovy dřevin v NPR Boubínský prales
Komárková, Eva
The aim of this diploma thesis was to evaluate the structure and developmental dynamics of natural tree regeneration in the core area of the Boubín virgin forest NNR and also to evaluate the effect of selected factors such as light conditions, water-affection of the site and substrat type on its occurence. By using a system of circular inventory plots all individuals of d1.3 < 10 cm were in 2010, 2012 and 2013 registered and classified into corresponding height class or diameter class. To find out the light conditions of this plots the hemispherical photographies were taken. The main tree species are represented by so-called hercynian mixture (spruce-fir-beech), which is contemporary for the main part in the stage of optimum and the initial stage of disintegration. It emerged that beech (Fagus sylvatica L.) is markedly dominated species in the regeneration layer and is related to water-unaffected sites. On the contrary representation of fir (Abies alba Mill.) is very low and its occurence was not to be found to be conditioned by any of considered factors; neverthless its growing-up has been prooved. Spruce (Picea abies (L.) Karsten) is very poorly able to compete in growing-up with beech, but this fact is not affected by any of analysed factors.
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Přirozená obnova pod borovými porosty na PR Kamenný vrch
Šardická, Veronika
The aim of the work is the mapping of actual natural regeneration of tree species in a part of the territory of the Nature Reserve Kamenný vrch (Brno) and next comparison actual natural regeneration with 2012. This mapping continues to work of Martin Šrom who made reseach flat and performed first mapping. Kamenný vrch has been Natural Reserve since 1978. Its area is more than 14 hectars. Primary task of Nature Reserve is protection of Greater Pasque Flower (Pulsatilla grandis) and the rest of the well-preserved natural thermophylic species. These species are non-autochtonous in large part but often there are prime species under non-native species. The aim of the work is the mapping of the natural regeneration under the pine stands (Pinus sylvestris), comparison and evaluation of the results with 2012, tabular and graphical reports and their verbal evaluation.
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Sledování sukcese dřevin po požáru s využitím leteckých snímků na lokalitě Havraní skála v NP České Švýcarsko
Krůček, Martin
This work explores the expansion of natural regeneration after the forest fire in the National Park Bohemian Switzerland, which occured in June 2006. Aerial photography were acquired in years 2009 and 2011 and both were used. The resulting accuracy achieved in the natural regeneration classification was 96 % in the year 2009 and 94 % in the year 2011. Natural regeneration covered 14% of the territory in year 2009 and in the year 2011 it was 51%. Furthermore comparison between the coverage of the natural regeneration and amount of individuals on the permanent research areas was made. The resulting correlation coefficient and coefficient of determination were low. The reason is, that the natural regeneration coverge detected using remote sensing is affected by dry crowns, high diversity of natural regeneration and also the absolute positional accuracy of aerial images.
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Dynamika přirozené obnovy dřevin v NPR Boubínský prales
Komárková, Eva
The aim of this diploma thesis was to evaluate the structure and developmental dynamics of natural tree regeneration in the core area of the Boubín virgin forest NNR and also to evaluate the effect of selected factors such as light conditions, water-affection of the site and substrat type on its occurence. By using a system of circular inventory plots all individuals of d1.3 < 10 cm were in 2010, 2012 and 2013 registered and classified into corresponding height class or diameter class. To find out the light conditions of this plots the hemispherical photographies were taken. The main tree species are represented by so-called hercynian mixture (spruce-fir-beech), which is contemporary for the main part in the stage of optimum and the initial stage of disintegration. It emerged that beech (Fagus sylvatica L.) is markedly dominated species in the regeneration layer and is related to water-unaffected sites. On the contrary representation of fir (Abies alba Mill.) is very low and its occurence was not to be found to be conditioned by any of considered factors; neverthless its growing-up has been prooved. Spruce (Picea abies (L.) Karsten) is very poorly able to compete in growing-up with beech, but this fact is not affected by any of analysed factors.
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