| Název článku: | Modelové ekonomické srovnání variant obnovy lesa po kalamitě alochtonní smrčiny: konvenční umělá obnova vs. přípravný březový porost |
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| Číslo: | 2 |
| Rok: | 2018 |
| Autor: | Zbyněk Šafránek, Antonín Martiník, Vlastimil Vala |
The paper deals with comparison of economic parameters of different regeneration treatments (silviculture approaches) after calamity events in the conditions of an oak-beech zone of Central Europe. There were analysed: net present value (NPV), NPV/rotation period – both with an interest rate of 1–3%, economic result, the economic result/rotation period and payback time for the following treatments: A – artificial regeneration of target species on clearcut; B – artificial regeneration of target species after preparatory stands at the age of 20 (20) or 35 (35) years; C – underplanting of target species. Silver birch regenerated by seeding was used as a preparatory species in the case of B and C treatments. The target species were Norway spruce (SM) and European beech (BK) for all treatments. From a theoretical point of view, spruce showed better economic characteristics in comparison to beech. On the other hand, the climate change disadvantages the spruce stands in the analysed conditions. Although economic parameters for spruce stands were better without preparatory stands, in the case of beech stands the preparatory stands showed economic justification.
