| Název článku: | Současné rozšíření smrku ztepilého a buku lesního v národním parku Šumava v území ponechaném samovolnému vývoji: dochází ke změně druhové skladby ve prospěch buku lesního? |
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| Číslo: | 4 |
| Rok: | 2017 |
| Autor: | Pavla Čížková, Pavel Hubený, Miroslav Svoboda |
The appearance of future forests, but also the very existence of forests in non-intervention areas is dependent on the ability of trees to regenerate. The main objective of this work was to describe regeneration of spruce and beech according to the current species composition of the tree layer. Data collection took place in the framework of the long-term project entitled „The Biomonitoring of Forest Ecosystems“. Measurements were performed on a square grid of points with randomised centres for the actual monitoring plots. The monitoring plots were circular (each with an area of 500 m2, semi-diameter 12.62 m). On each plot we evaluated the canopy layer, tree regeneration, deadwood, and the undergrowth layer. 631 plots that were measured in 2009–2014 are evaluated in this work. In areas dominated by spruce in the canopy layer (517 plots), spruce also prevailed with respect to regeneration in 91% of cases, while beech was dominant in 2% of cases. In areas prevailed by beech in the canopy layer (47 plots), beech dominated with respect to regeneration in only 66% of cases, while spruce was dominant in 23% of cases. However, the total number of plots dominated by spruce and beech in the canopy layer and in regeneration layer were almost identical, so the current and future proportions of plots prevailed by spruce and beech were retained.
