The aim of the presented work was to evaluate measured data in a Paulovnia plantation clone in vitro 112 grown in Strelice u Brna during the years of 2016 and 2017. This clone is a hybrid of Paulownia elongata × Paulownia fortunei. In 2016, 686 carefully marked plants were planted at the plot. The whole area of plantation was separated into the four sectors according to micro-relief of the terrain and use of a different drill diameter during the planting, what results has been reflected. Furthermore, three different approaches of protection against frost damage, specifically bandage of stem by non-woven fabric, cower of stem base part (root neck) by peat or soil, were applied. From the obtained results, during the first two years after planting, come out that root system of clone in vitro 112 is resistant to frost damage despite to applied cower of soil or peat, and that above part of plant can be protected by bandage, but it is necessary to investigate the best time for bandage removing as during this procedure flushing shoots were mostly broken. Bandage did not protect the tested plants against frost damage as well as all the rest tested protection approaches. On the average, the frost damaged about 72 % of plant height downward from the top. Total mortality of plants planted in 2016 was 4 % in the autumn of 2017, therefore we can deduce that mortality will be not limiting factor for Paulovnia growing in CR. Next considering parameter was an occurrence of stem forking (two or three sprouts per stem), which occurred only on 2 % of plants. When keeping the basic silvicultural technology during plantation and consequent tending of plantation, Paulownia clone in vitro 112 can grow under conditions of the Czech Republic.

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Natural and anthropogenic disturbances have influenced forest stand structure and affected species compositions within forests for millennia. Disturbances such as fire, severe weather events, and forest management practices may result in significantly reduced tree biomass. Thus, these disturbances may lower canopy closure and stem density in support of forest management goals, such as open oak woodland restoration, or promote an increase in species richness within the forest understory. However, these types of disturbance may also produce the unwanted consequence of opening pathways for the invasion of non-native species. Once established, these non-native species may threaten native plant communities and biodiversity. Here, we elucidate how varied natural and anthropogenic disturbances have altered forest stand structure. One consequence of disturbance has been the increase in the presence and cover of non-native species within upland oak forest sites located in the Daniel Boone National Forest, Kentucky. The results of these studies suggest that timely and effective management strategies are needed to minimize non-native species impact on forested habitats following disturbance, and to promote the desired structural shifts that will sustain diverse habitats and support biodiversity.

Thesis (Ph.D.)--Ohio University, August, 2001. / Title from PDF t.p.

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