Template-Type: ReDIF-Article 1.0 Author-Name: A. Jaworski Author-Workplace-Name: Department of Silviculture, Faculty of Forestry, Agricultural University of Cracow, Cracow, Poland Author-Name: Z. Kołodziej Author-Workplace-Name: Department of Silviculture, Faculty of Forestry, Agricultural University of Cracow, Cracow, Poland Author-Name: L. Bartkowicz Author-Workplace-Name: Department of Silviculture, Faculty of Forestry, Agricultural University of Cracow, Cracow, Poland Title: Structure and dynamics of stands of primeval character composed of the little-leaf linden (Tilia cordata Mill.) in the "Las lipowy Obrożyska" reserve (southernPoland) Abstract: The little-leaf linden stand, investigated in this study, is a relict of the Atlantic period. On three permanent sample plots, situated in a strictly protected reserve, trees were measured and classed in 1990 and 2000. Stands in these areas represented the growing up stage in transition to the optimum stage (Obrożyska 1), the optimum stage (Obrożyska 2), and the growing up stage, the selection structure phase (Obrożyska 3). In 2000 the percentage of linden by volume was 97% in Obrożyska 1 and 2, and 77% in Obrożyska 3, while the stand volume was 768, 861, and 761 m3/ha, and basal area 60, 62, and 55 m2/ha,respectively. These stands have the highest per hectare volume among stands of primeval character in the Polish part of the Carpathians. Keywords: development stages and phases, stand volume, basal area, regeneration, volume of necromass Journal: Journal of Forest Science Pages: 283-304 Volume: 51 Issue: 7 Year: 2005 DOI: 10.17221/4565-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4565-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200507-0001.txt Handle: RePEc:caa:jnljfs:v:51:y:2005:i:7:id:4565-JFS Template-Type: ReDIF-Article 1.0 Author-Name: R. Gebauer Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Author-Name: M. Martinková Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Title: Structure and functions of the types of Norway spruce (Picea abies[L.] Karst.) roots Abstract: The aim of the study was to describe variability of the structure of roots in Norway spruce (Picea abies [L.] Karst.) from their growth tips to the stem foot, i.e. anchor roots in relation to their changing functions. Histology and anatomy of plant organs were dealt with by the innumerable number of authors and fundamentals of knowledge in these disciplines have become the self-evident part of botany textbooks. The description of primary and secondary structure of roots is explained in many textbooks by means of drawings depicting the mutual position of particular systems of tissues. However, it refers mostly to the structure of herb roots in either Magnoliophytes or Liliophytes. Naturally, the structure of tree roots does not substantially differ from herb species. A certain problem is related to the secondary thickening of roots, their ramification, anastomosis and changes in the structure which are enforced by tension and pressure forces; these forces affect the roots during their mechanical load, e.g. by solifluction, soil load and compaction or through their above-ground systems. Trees can be stressed by wind gusts, snow cover, glazed frost and a number of other factors. Therefore, the structure of roots changes in the course of time as well as due to the increasing weight of the stem and crown. In terms of histological structure Norway spruce roots were studied within a forest stand in the area of the Křtiny Training Forest Enterprise, viz. Vranov Forest District (49°19´484´´N, 16°47´629´´E). Root systems were exposed with an air blast using the AIR-SPADE tool (nadezhdina, čermák 2003) and cuts of buttress roots, horizontal roots, root anastomosis and fine roots were selected. Histological studies were focused on manual transversal cuts of fine roots. Keywords: histology, primary roots, secondary structure, Picea abies (L.) Karst Journal: Journal of Forest Science Pages: 305-311 Volume: 51 Issue: 7 Year: 2005 DOI: 10.17221/4566-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4566-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200507-0002.txt Handle: RePEc:caa:jnljfs:v:51:y:2005:i:7:id:4566-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Gross Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Agriculture in Prague, Prague, Czech Republic Title: Domestic rare forest tree species - help to the processing industry? Abstract: Rare forest tree species that are necessary for the domestic processing industry, especially for the furniture industry, currently occur as scattered trees in many forest stands in theCzechRepublic. For their harvest and supply to the processing industry it is necessary to measure their dimensions and growing stock. Logging technologies are proposed that will enable to harvest and transport this scattered wood mass to buyers. These technologies and used conveyances must not cause any damage either to forest soil or to adjacent stands and they should be economic, i.e. increased costs of processing must be covered by selling price. Keywords: rare tree species, wild cherry, logging system, sorting Journal: Journal of Forest Science Pages: 312-317 Volume: 51 Issue: 7 Year: 2005 DOI: 10.17221/4567-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4567-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200507-0003.txt Handle: RePEc:caa:jnljfs:v:51:y:2005:i:7:id:4567-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Minďáš Author-Workplace-Name: Department of Forest Ecology and Biodiversity, Forest Research Institute Zvolen, Zvolen, Slovak Republic Title: Evaluation of the temporal and spatial distribution of non-methane hydrocarbon emissions from the forests inSlovakia Abstract: The paper presents the first detailed inventory of non-methane hydrocarbon emissions from forest vegetation in Slovakia. Emissions rates of monoterpene, isoprene and other volatile organic compounds (VOC) were calculated for each main tree species separately using the relevant parameters such as temperature and leaf biomass density. The GIS technology was used for the analysis of spatial distribution of VOC emissions. The annual total VOC emissions from forests in Slovakiaranged from 77 to 98 ktonnes during the period 1990-2000. The percentage of isoprene, mono-terpene, and other VOC emissions is relatively stable and varies in the narrow intervals: isoprene emissions (17-23%), monoterpene emissions (65-73%), and other VOC emissions (10-15%). The major contribution of VOC (especially monoterpenes) comes from the Norway spruce (Picea abies) forests (45.7% in 2000) due to their abundance and high leaf biomass density with domination in the montane belt. The oak species (Quercus sp.) are the second important VOC emittors (18.2%) with domination in the thermo-colline and colline belt of the Carpathian Mts. Keywords: biogenic emissions, isoprene, monoterpenes, volatile organic compounds, Slovak forests Journal: Journal of Forest Science Pages: 318-326 Volume: 51 Issue: 7 Year: 2005 DOI: 10.17221/4568-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4568-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200507-0004.txt Handle: RePEc:caa:jnljfs:v:51:y:2005:i:7:id:4568-JFS