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Analýza přírůstu smrku ztepilého (Picea abies) pěstovaného v monokultuře, porostní směsi a strukturovaném porostu na ŠLP ML Křtiny
Jarošová, Kateřina
This bachelor thesis deals with the evaluation of spruce production in three structures. Monoculture, a stand mix of European beech and Norway spruce, and a structurally differentiated forest converted to a selection forest with Norway spruce, Silver fir and European beech are evaluated. When evaluating the distribution of thickness and volume, the structurally rich stand is closest to sustainable management. In terms of the comparison of thicknesses, the monoculture has the highest competence, due to the highest number of individuals in the main stand. For the crown projections, the highest level of competibility is in mixed stands, mainly due to space filling by beech. In terms of growth of the tree base area (BAI), the main stand of the forest is the most productive in the conversion to selection and reaches the highest values. In a selective forest, the measure of thickness competiveness is somewhat biased by the high frequency of individuals concentrated in a relatively small area. This fact increases the thickness-competition index even when the trees involved are understory.
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The wood plants in the mown meadow: the analysis of morphology, age, growth and surviving of woody plants on species-rich meadows in the White Carpathian. Bc. Thesis, in Czech.
MAZŮREK, Petr
This study deals with the presence of woody species in species-rich, savanna-like meadows (with scattered Quercus spp. trees) in National Nature Reserve of Čertoryje, Bílé Karpaty Mts., SE Czech Republic. The first part is a community-oriented study of variation of woody species composition on meadows with different land-use management (regularly mown, recultivated,abandoned etc.). Indirect ordination analysis (DCA) was used to relate woody species composition to land-use history (seven meadow types) and species composition of the surrounding vegetation. Further, attempts were made to explain the occurrence and survival of woody species by their life-history traits (root:shoot ratio, regeneration ability after mowing etc). The second part of the thesis tries to identify the most prominent climatic factors affecting the growth of two common oak species in Čertoryje (1) by establishing the mean relationships between tree ring residual chronology and climate through bootstrap moving correlation and response-function analysis, and (2) by distinguishing ``pointer years{\crqq}, which correspond to abrupt changes in growth pattern and reveal the tree-growth response to extreme climatic events, such as summer drought. Since the oaks are ring porous species with abrupt transition between earlywood and latewood, both parameters were measured and used to obtain subseasonal climatic information.
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