Journal of Forest Science, 2006 (vol. 52), issue 9

Forest topsoil organic carbon content in Southwest Bohemiaregion

E. Cienciala, Z. Exnerová, J. Macků, V. Henžlík

J. For. Sci., 2006, 52(9):387-398 | DOI: 10.17221/4519-JFS  

The aim of this study was to evaluate organic carbon content (SOC) in the surface layers of forest soils in the two Natural Forest Regions situated in Southwest Bohemia, namely Západočeská pahorkatina (NFR 6) and Český les (NFR 11). The study is based upon on two consecutive soil sampling campaigns during autumn 2003 and 2004. While the sampling of 2003 was inadequate to estimate bulk density, the consecutive campaign used a defined sample volume to permit an estimation of bulk density and quantification of soil organic carbon (SOC) for soil organic layers and the upper mineral horizon. The total sampling depth was 30 cm including both organic and...

Structural diversity change and regeneration processes of the Norway spruce natural forest in Babia hora NNR in relation to altitude

J. Vorčák, J. Merganič, M. Saniga

J. For. Sci., 2006, 52(9):399-409 | DOI: 10.17221/4520-JFS  

The research was focused on exploring the dynamics and forms of regeneration processes and structural diversity of the Norway spruce virgin forest in Babia hora NNR in relation to altitude. In each developmental stage 19 sample plots were established. The structural diversity was assessed by the indices proposed by Clark and Evans (1954), Füldner (1995) and Jaehne and Dohrenbusch (1997). Concerning the spatial distribution of the trees in the virgin forest no tendency to their clustering with the increasing altitude was found in the zones below 1,460 m. The influence of the altitude was confirmed in the zone above 1,461 m where the groups of "family...

Silvicultural assessment of reforestation under specific spoil bank conditions

I. Kupka, K. Dimitrovský

J. For. Sci., 2006, 52(9):410-416 | DOI: 10.17221/4521-JFS  

Forestreclamation of spoil banks in mining areas in the North-West of the country started in the second half of the last century. Nowadays forest stands growing on anthropogenic substrates which are still unlike to forest soils, are getting in the phase of possible natural and/or artificial regeneration. The basic characteristics of substrate in the area and ecological attitude of used tree species are driving variables for successful regenerations. The study summarizes the vitality and growth of selected species on anthropogenic substrates in the area with the recommendations of key tree species used for forest reclamation. The results show the best...

Importance of non-wood forest product collection and use for inhabitants in the Czech Republic

L. Šišák

J. For. Sci., 2006, 52(9):417-426 | DOI: 10.17221/4522-JFS  

The article investigates the socio-economic importance of collection and use of non-wood forest products (NWFP) for inhabitants in the Czech Republic (CR) in 2005 and brings a comparison with former investigations and research projects. The research project consisted of these parts in 2005: 1. Analysis of hitherto performed research projects and their results in 1999-2003, 2. Investigation of quantities and values of NWFP collected in 2004 and 2005, 3. Specific investigation of socio-economic importance of NWFP collection and use. The results of respective investigations prove NWFP collection being quite important for the inhabitants of the CR. The...

Economic effectiveness of sustainable forest management

K. Pulkrab

J. For. Sci., 2006, 52(9):427-437 | DOI: 10.17221/4523-JFS  

The article deals with economic aspects of sustainable forest management. The analysis stems from Plíva's typological system. Several hundreds of variants were calculated for forest silviculture profitability classified according to management intensity, target management system, proportion of ameliorating and improving species, proportion of natural regeneration, and set of forest types. The results show a possibility of labour saving and also marked differentiation of the effect of wood production function depending on natural and production conditions and management intensity.