|
|
Využití krytokořenného a prostokořenného sadebního materiálu v nastávajících klimatických změnách
Mergl, Václav
The aim of this thesis is to evaluate the use of containerized and bare-rooted planting stock in the upcoming climate change. Four research areas at different sites in SLT 2S, 6K, 6S and 7K (Czech forest ecosystem classification) and in different climatic areas were chosen for this purpose. Furthermore three timber species for the research were selected, namely European beech (Fagus sylvatica L.), Norway spruce (Picea abies (L.) Karsten) and Douglas fir (Pseudotsuga menziesii (Mirbat.) Franco). 300 dormant individuals of the containerized and bare-rooted version of the chosen wood species were planted on each research area. 100 individuals of each variant in all species were measured after the growing season. Following parameters were measured on each plant: height of above-ground part of the plant, height of above-ground part of the plant at the time of the planting, shoot lenght, root collar diameter, crown width, length of the assimilatory organ, width of the assimilatory organ, trunk straightness, axis deflection of the trunk from the vertical axis. If trunk multiplicity occurred, the height of the trunk deployment was measured. Atributes such as color of the assimilatory organ, crown shape, type of loss or damage of the plant and the multiplicity of vertex were also observed. As a result it was found that it is necessary to maintain the natural tree species composition. Also it was revealed that the bare-rooted planting stock has a better survival rate on drier stands, precisely on SLT 2S. The SLT 6S, 6K and 7K were found to have better survival rate of the containerized planting stock. This finding indeed cannot be aplied at sites in SLT 6S and 7K where the beech had the same grow out rate.
|
guest ::
RSS feed.