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The aim of this paper was to assess the influence of the silvicultural system (clear-cut and shelterwood), species composition of forest stands, in relation to the fluctuation of raw wood prices, on the economic results of forest management. Model analyses were performed on the example of the conditions of the CZU Forests, specifically for the third forest vegetation zone, SLT 3K. The input to the model evaluation was: data on the growth and production of the investigated tree species in the given site conditions from growth tables, the costs of forestry measures were derived from standards, the assortment was carried out on the basis of assortment tables, the prices of assortments of raw wood were taken from the data of the Czech Statistical Office for 2015 and 2019. The synthetic result of the model evaluations was the gross profit of forest production per hectare and year. The results of the analysis prove the economic advantage and greater stability of the shelterwood silvicultural system, especially with regard to lower silvicultural costs, higher volume of timber production and mutual compensation of the decrease and increase in the prices of raw wood of the evaluated tree species. [ABSTRACT FROM AUTHOR]

Climate oscillations have been affecting forests over last years, and a shift in tree species composition is expected. The objective of this study is the development of three model tree species compositions with different share of the natural regeneration of target and pioneer species and the evaluation of the reforestation costs and the costs of plantation establishments. The species compositions were composed according to the basis for the determination aggregated target species composition (ÚHÚL 2019a). The stand type of oak of the normal quality represented lower-altitude-sites, and the stand type of beech of the normal quality represented higher-altitude sites. The potential value of the rotation age stands (120 years) was also assessed. The regeneration costs and the costs of the stands’ establishment were calculated using the output standards. The calculation included the really reported natural regeneration. Model A was composed of targeted species, Model B contained 20% of pioneer species and Model C consisted of 40% pioneer species. The results at all sites confirmed a decrease in the costs of regeneration and stands’ establishment, which corresponded to the natural regeneration share. The value of the rotation aged stands, which contained the significant share of pioneer species, mostly did not achieve the value level of the stands with the standard species composition (Model A). It will be important to focus the attention to the selection of a suitable species composition used for the forest regeneration and to the quality of the stand tending. The stands that regenerated by a new species, through spatially and time differentiated composition should be able to create the high value of the society-wide functions appropriately. [ABSTRACT FROM AUTHOR]

Large forested areas exhibit a Norway spruce dieback in the Czech Republic. Foresters being faced this disaster need to change tree species composition of new stands. The objective of this study is the assessment of forest regeneration costs at study sites in Northern and Central Moravia (Czech Republic) investigated in 2008-2017. For that purpose we used the data recorded by the state enterprise Forests of the Czech Republic, including information about operations carried out in the regenerated stands that led to their establishment. The data were also divided according to ecological series and certain forest altitudinal zone. Based on the output standards we calculated the regeneration costs including the following silvicultural treatment of the really used species composition, and the costs of a potential regeneration and the following silvicultural treatment of the model species composition comparable with the target tree composition. The results confirmed higher costs on site regeneration where the species composition is more varied and supports ecological stability. However, this species composition requires a more intensive forest management than model species composition favouring mostly Norway spruce. [ABSTRACT FROM AUTHOR]