Journal of Forest Science, 2004 (vol. 50), issue 3
Structure and accumulation of litterfall under Norway spruce stands in connection with thinnings
J. Novák, M. Slodičák
J. For. Sci., 2004, 50(3):101-108 | DOI: 10.17221/4605-JFS 
The effect of thinning on the structure and accumulation of litterfall and holorganic horizons (L, F, H) in young Norway spruce stands was investigated. The research was conducted on a Norway spruce thinning experiment Polom (established in 1980) in the Orlické hory Mts. (north-eastern part of the Czech Republic). In 1992, the monitoring of litterfall started on an unthinned control stand (plot 1) and on a comparative stand with very heavy thinning from below (plot 3). During the period of observation (age of the stand 27-37 years), the total weight of litterfall ranged between 1,800 and 4,800 kg/ha. The amount of litterfall was partly influenced by...
Feeding of the willow leaf beetle Lochmaea capreae L. (Coleoptera, Chrysomelidae) on leaves of birch (Betula pendula Roth) contaminated by heavy metals
L. Rokytová, E. Kula, L. Kodarová, A. Pešlová
J. For. Sci., 2004, 50(3):109-117 | DOI: 10.17221/4606-JFS
The effect of contamination of birch (Betula pendula Roth) leaves with heavy metals on the feeding of imagoes of the willow leaf beetle (Lochmaea capreae L.) was studied under laboratory conditions. The imagoes preferred feeding on leaves less contaminated by Cd, Mn and Zn. The Pb content was tolerated on all the studied levels. The repellent effect of Zn 8,000 µg/mlin the Pb + Zn regime was compensated by Pb 500 in relation to Mn 10,000
Dead wood and mycoflora in Nature Reserve Polom, Protected Landscape Area Železné hory
L. Jankovský, J. Beránek, A. Vágner
J. For. Sci., 2004, 50(3):118-134 | DOI: 10.17221/4607-JFS
Activity of fungi participating in the dead wood decomposition was studied in the Velký Polom Nature Reserve, Protected Landscape Area Železné hory. Two game-proof fences of an area of 0.30 ha (570 m alt.) and 0.19 ha (620 m alt.) were used as permanent sample plots. In both the plots, activities were monitored of wood-destroying fungi in 126.82 m3 dead wood, 104.05 m3 of which were in beech. After conversion to an area, the volume amounts to 258.82 m3 per ha. In the whole reserve, almost 220 species of macromycetes were recorded in the course of a mycological survey. Wood-destroying fungi are the dominant component...
Variation of the tree ring micro-hardness demonstrated on spruce wood
V. Mareš, J. Blahovec
J. For. Sci., 2004, 50(3):135-141 | DOI: 10.17221/4608-JFS
Micro-hardness was used for the study of wood structure (Norway spruce) in the line perpendicular to tree rings (radial surface). The steel indentor 0.25 mm in diameter with flat head was used for this purpose. The individual penetration tests were performed at constant velocity 0.0167 mm/sinto a depth of 0.3 mm. Local wood strength was defined as the mean pressure on the indentor head at 0.02 mm penetration. The set of tests (~ 320) gave information about stress variation in dependence on the location of the test place in the tested surface. The stress was understood as a parameter describing the growth properties of wood similarly like the density...
Application of logistics in woodworking industry
J. Štůsek
J. For. Sci., 2004, 50(3):142-148 | DOI: 10.17221/4609-JFS
The paper is focused on logistics. The importance of the logistic chain management is emphasized as it becomes a crucial competitive success factor. The total corporate costs and customer service quality are dependent on the structure and communication within this chain. Using a concrete example, several results of the establishment of the logistic approach in the woodworking industry are mentioned in the paper. It has to be emphasized that the application of the logistic principles in the industry has its own specificities arising mainly from the biological character of processes providing and manufacturing the basis resource. A solution of the supply...