Vývoj struktury primárních smíšených temperátních lesů v závislosti na režimu disturbancí

• Main Author: Dušátko, Martin
• Other Authors: Svoboda, Miroslav
• Format: Dissertation
• Language: Czech
• Published: 2017
• Online Access: http://www.nusl.cz/ntk/nusl-368461

Our thesis reconstructs disturbation history of primary forest remnant in Kornietová reservation in Slovakia. We extracted dendrochronological samples and collected data about the structure of a stand on sampling plots. 6 of total 14 plots were affected by an extreme disturbance around the year 1830. It removed almost complete upper canopy layer. This event was followed by a long period of minimal disturbance activity. The rest of plots was characterized by a regime of weak disturbances returning every 30 or 40 years. Between these two groups of plots, the shape of DBH distibution and the amount of large trees were significantly different. The plots which were affected by the extreme disturbance had distinctly more trees over 600 mm of DBH, because total extend of disturbances was markedly lower after 1830. The other parameters like amount of dead wood, species composition and quantity of saplings were not significantly different. The other studies suppose, that weak disturbances promote regeneration of beech, while large disturbances allow conifers to regenerate. The results of you study do not support such a relation. During data processing and evaluation, we discovered a high error rate the data suffered. It is more difficult to crossdate correctly a beech, then previously thought, but finally...