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Growing Douglas-Fir in the area SLP CZU in Kostelec nad Cernymi lesy
Kubeček, Jiří ; Podrázský, Vilém (advisor) ; Marušák, Róbert (referee)
Douglas-fir (Pseudotsuga menziesii /Mirb./ Franco) is currently considered one of the most important introduced tree species in Europe; for example in Germany it is considered domesticated. By its production it surpasses significantly our domestic softwood and its importance is found both in amelioration and improving functions as well as in its ability to compensate for spruce, so far our most common species however retreating somewhere.
The work addresses the growth processes of individuals and stands of Douglas- fir and its selected environmental effects in regions of Kostelec nad Černými lesy, and Písek. The aim is to demonstrate the production potential, economic evaluation, describe the growth dynamics and the impact on soil quality in the stands. The methods applied will include dendrometric measurement, description of growth dynamics, profitability, sampling and analysis of humus and mineral soil horizons. Basic pedochemical characteristics will be analyzed: soil reaction, soil sorption complex, nutrient content in total and exchangeable forms. The results indicated a high produce ability of Douglas fir comparable to the one of Grand fir and exceeding the one of Norway spruce. In terms of stabilization and effects on soil also has better properties than spruce. In terms of amelioration resemble the qualities of deciduous trees.
The work follows on previous experimental investigation..The output provides quantification of the production and soilforming potential, yield assessment and recommendations for application in conditions of the University Forest Enterprise and the Czech Republic.
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