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Struktura přirozené obnovy v maloplošných chráněných územích po disturbancích a v porostních mezerách, resp. ve stádiu rozpadu
Šlechtová, Lucie
The main goal of this bachelor thesis is comparison of natural regeneration in two na-tural preserves with different subsoil in place of interest Drahanská vrchovina, namely natural preserve Coufavá (granodiorite) and national natural preserve Vývěry Punkvy (limestone). In each preserve were selected 5 clearing areas located in gaps after large-scape disturbances or after nature disintegration of stand. In autumn 2016 one-off me-asurment was done in these locations. Primarily species composition, crop density and height structure of natural regeneration were compared. All results of measurment were illustrated in tables and charts. The results of comparison of regeneration in both preserves should explain which subsoil is better for natural regeneration.
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Hodnocení stavu a vývoje přirozené obnovy na kalamitní ploše v NPR Vývěry Punkvy
Chaloupková, Marie
Forest territory of third vegetation forest zone of NNR Vývěry Punkvy got hit in 2010 by windstorm Antonín. This windstorm created clear-felled area of approximately 2.68 hectares on which was established permanent research area of 0.2 hectares in 2012 in order to study secondary succession. In 2013-2015 there was regular monitoring of trees on research(mapped out) area and also there were done analyzes on influences of parental stand, stand structure of whole clear-felled area, age and spatial distribution of natural regeneration. Performed analyzes found raid on clear-felled area was present even before the wind disturbancy. Nevertheless there was an increase of seedlings after the windstorm too. The oldest trees on the area are 8 years old and youngest are 2 years old. Rather target trees are regenerated than pioneer ones. Mainly it is ash (Fraxinus excelsior) than it is hornbeam (Carpinus betulus) and beech (Fagus sylvatica) and 14 other tree species. Ash exceeds significantly other tree species in quantity. Though natural regeneration of fir and oak is missing. Tree species are successfully gaining height eventhough it gets damaged by wildlife. Structure of regeneration on the area is diverse and spotty-depending on site conditions.
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