No description available.

No description available.

No description available.

No description available.

No description available.

No description available.

The role of soil properties for the vegetation development during early spontaneous succession and forest reclamation was studied in a limestone quarry Mokrá (south of Moravia). Spontaneously regenerated areas were studied mainly with the aim to detect the soil environment features supporting the swards formation of expansive reed grass (Calamagrostis epigejos), which is able to arrest a succession process. Forestry reclaimed areas were study with the aim to compare soil properties of prosperous and decline sites. We examined water air regime, soil reaction (pH), soil texture, soil organic carbon content (SOC), total nitrogen content (Ntot) and content of available Ca, Mg, K and P. The multivariate statistical approach revealed the fact that soil texture, SOC, Ntot and water air regime were statistically significant for the spontaneously regenerated vegetation types. Reed grass preferred fine grained soils with higher SOC and Ntot content. Content of clay, sand and available K were statistically significant for decline and prosperous sampling sites. However any soil property could be called as a cause of prosperity or decline.

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The work is focused on finding production affinity of selected typological units, which are the basis for creating management stand sets. The work is based on data processing taken from repeatedly performed statistical operational inventory at the School Forest Enterprise Masarykův les Křtiny - forestry section Borky. In the course of work, three tree species were examined: beech (Fagus sylvatica), Norway spruce (Picea abies) and larch (Larix decidua). On the basis of examination during the height growth and parameters of height growth functions of the the given trees, the significantly similar groups by production affinity were created, separately for each tree species. The resulting groups were compared with the standard system of classification of forest types group to the target management groups. It was created 30 significantly similar groups. None of the groups formed within the three evaluated groups of tree species does not exceed 60% compliance with any management target file.

The focus of this work is on the economic aspects of using dendromass (logging residues) for energy purposes in the production of energy chips. In defining economic factors, the paper employs as a basis actual manufacturing and sales data from 247 business cases in 2011-2012 at nine forest properties. The data reflect 44,971 m3 of harvested wood, 6671 tons of energy chips with a total energy content of 63.92 TJ. The initial objective of the paper is to derive average and proportional variables using data from actual business cases and then use these to discover the limiting production values, particularly those of the purchase price and energy chips, as well as logging residues and the limiting transport distance. The relationships derived are shown both mathematically and graphically. Results found in the paper are primarily designated for preproduction calculation by economic entities, the valuation of logging residues and as a basis for national policy regarding both forests and energy.