Template-Type: ReDIF-Article 1.0 Author-Name: E. Cienciala Author-Workplace-Name: Institute of Forest Ecosystem Research (IFER), Jílové u Prahy, Czech Republic Author-Name: Z. Exnerová Author-Workplace-Name: Institute of Forest Ecosystem Research (IFER), Jílové u Prahy, Czech Republic Author-Name: J. Macků Author-Workplace-Name: Forest Management Institute, Brandýs nad Labem, Czech Republic Author-Name: V. Henžlík Author-Workplace-Name: Forest Management Institute, Brandýs nad Labem, Czech Republic Title: Forest topsoil organic carbon content in Southwest Bohemiaregion Abstract: 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 mineral layer. SOC of organic horizon was on average 1.99 kg C/m2. It differed by stand site type ranging from 0.70 to 3.04 kg C/m2. The organic layer SOC was smallest under beech (1.03 kg C/m2), whereas it was higher under pine (2.19 kg C/m2) and spruce (2.09 kg C/m2). SOC in the mineral layer was in average 7.28 kg C/m2. SOC differed significantly by the major tree species and reached 10.6; 5.67 and 7.5 kg C/m2 for beech, pine and spruce sites, respectively. The average SOC for the total soil layer (0-30 cm) reached 9.33 kg C/m2. The methodological aspects of regional estimation of SOC and the potential of utilization of the national forest inventory program are also discussed. Keywords: soil organic layer, mineral horizon, bulk density, soil carbon stock Journal: Journal of Forest Science Pages: 387-398 Volume: 52 Issue: 9 Year: 2006 DOI: 10.17221/4519-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4519-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200609-0001.txt Handle: RePEc:caa:jnljfs:v:52:y:2006:i:9:id:4519-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Vorčák Author-Workplace-Name: Forestry Trades School, Tvrdošín, Slovak Republic Author-Name: J. Merganič Author-Workplace-Name: Forest Research Monitoring (FORIM), Sobrance, Slovak Republic Author-Name: M. Saniga Author-Workplace-Name: Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovak Republic Title: Structural diversity change and regeneration processes of the Norway spruce natural forest in Babia hora NNR in relation to altitude Abstract: 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 spruces" are typical. Diameter differentiation was significantly higher in the growth stage. Evaluation of this attribute in terms of the altitude detected significant diameter differentiation at an altitude below 1,260 m in the growth stage. According to the Füldner index the virgin forest has generally medium differentiated diameter structure. According to the complex index by Jaehne and Dohrenbusch (1997) the differentiation of the virgin forest decreases with the ascending altitude up to 1,460 m, where the compact forest ends. Evaluation of the seedbed revealed that 46.2% of the naturally regenerated individuals were growing on mineral soil, 52.4% on dead wood and 1.4% on wind-thrown roots. Regarding the developmental stages 46% of the individuals were found in growth stage, 23% in optimum stage and 31% in breakdown stage. Keywords: Norway spruce, virgin forest, structural diversity, natural regeneration Journal: Journal of Forest Science Pages: 399-409 Volume: 52 Issue: 9 Year: 2006 DOI: 10.17221/4520-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4520-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200609-0002.txt Handle: RePEc:caa:jnljfs:v:52:y:2006:i:9:id:4520-JFS Template-Type: ReDIF-Article 1.0 Author-Name: I. Kupka Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech Republic Author-Name: K. Dimitrovský Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech Republic Title: Silvicultural assessment of reforestation under specific spoil bank conditions Abstract: 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 adaptation to anthropogenic substrates for black alder and maple. Keywords: forest reclamation, afforestation of spoil banks, anthropogenic substrates, growth, vitality, black alder, Norway maple, English oak, rowan tree, European ash, linden Journal: Journal of Forest Science Pages: 410-416 Volume: 52 Issue: 9 Year: 2006 DOI: 10.17221/4521-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4521-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200609-0003.txt Handle: RePEc:caa:jnljfs:v:52:y:2006:i:9:id:4521-JFS Template-Type: ReDIF-Article 1.0 Author-Name: L. Šišák Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech Republic Title: Importance of non-wood forest product collection and use for inhabitants in the Czech Republic Abstract: 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 importance consists in the material value of picked commodities on the average annual level higher than 3,000 mil. CZK. Nevertheless, collecting NWFP is considered as a very important recreational activity. Only a small part of the population collecting NWFP (about 12%) collects NWFP to save money. Keywords: non-wood forest products, collection, socio-economic importance, Czech Republic Journal: Journal of Forest Science Pages: 417-426 Volume: 52 Issue: 9 Year: 2006 DOI: 10.17221/4522-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4522-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200609-0004.txt Handle: RePEc:caa:jnljfs:v:52:y:2006:i:9:id:4522-JFS Template-Type: ReDIF-Article 1.0 Author-Name: K. Pulkrab Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech Republic Title: Economic effectiveness of sustainable forest management Abstract: 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. Keywords: economic effectiveness, sustainable forestry management, management intensity, forestry production gross profit, evaluation Journal: Journal of Forest Science Pages: 427-437 Volume: 52 Issue: 9 Year: 2006 DOI: 10.17221/4523-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4523-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200609-0005.txt Handle: RePEc:caa:jnljfs:v:52:y:2006:i:9:id:4523-JFS