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Analýza stavu a vývoje obnovy lesa na ŠP Valšovice
Fiedor, Jaroslav
The work is devoted to the evaluation of the status and trends of the SP Valšovice. The forest regeneration was evaluated according to the economic records and field research. On the base of the LHO there have been, for the last 10 years, researched: the state and development of tree species, the proportion of trees in the regeneration, the increase of game damages to forests, the development of costs of protecting cultures and particularities of the extreme locations. In the ŠP Valšovice, the most represented tree species is beech (38%), followed by spruce (28%) and larch, which represents 15% of the LHC area. There is a significant decline in the representation of spruce in ten years, which is almost 5%. For the regeneration, the most applied is beech (59%), followed by spruce (20%), oak (11%) and fir (6%). The share of natural regeneration is, on average 16.9%. As for the particular tree species, larch is naturally regenerated (100%), and beech (22%). Conversely JD is regenerated only artificially. The major problem in reforestation represents the restoration of beech to calamity clearings and damages caused by game. In the case of calamity clearings, beech is replaced by other trees, especially oak. Damages caused by game are solved by increasing the surface treated with paint, building better fences at a rather smaller area and increasing hunting based on authorization from the competent government authority. Crops with good conditions for natural recovery, it is necessary to plan regeneration mining for seminal year. For the incidental mining, I recommend to favor group selection.
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