Journal of Forest Science, 2013 (vol. 59), issue 9
Considering the relationship of slope and soil loss on skid trails in the north of Iran (a case study)Original Paper
M. Akbarimehr, H. Jalilvand
J. For. Sci., 2013, 59(9):339-344 | DOI: 10.17221/34/2013-JFS 
With increasing mechanization of forest harvesting operations the impacts on soil have increased quite dramatically. The objective of this paper was to examine the relationship of slope and soil loss. This research was carried out in parcels 14 and 26 of the third district of Nav-Asalem forest in the north of Iran. Erosion plots were 75, 150 and 225 m2 with two slope classes. After each rainfall event the amount of runoff was measured; then, a sample was taken to determine the weight of soil loss. The results of correlation analysis by Pearson's test between soil loss and slope classes, soil loss and slope length showed that there was a...
Soil-forming effect of Douglas fir at lower altitudes - a case studyOriginal Paper
I. Kupka, V. Podrázský, J. Kubeček
J. For. Sci., 2013, 59(9):345-351 | DOI: 10.17221/27/2013-JFS
Forest ecosystem and in particular forest soil biodiversity and stability could be jeopardised by the impropriate tree species composition. Douglas fir is a species which has a high potential in Europe both from economic and biodiversity aspects of forest management. A more detailed analysis of Douglas fir effects on the humus forms and forest soil under different conditions is needed to evaluate the future use of this species in central European forests. The study plots cover acid sites with natural hardwood, spruce monoculture and Douglas fir stands. The soil analysis proved favourable effects of this species on soil chemistry, organic matter as...
Prosperity of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) plantations in relation to the shelterOriginal Paper
D. Sychra, O. Mauer
J. For. Sci., 2013, 59(9):352-358 | DOI: 10.17221/84/2012-JFS
The study evaluates the mortality, growth and qualitative characteristics of Douglas fir transplants planted out on clear-cut areas with different shelter. We assessed 11 clearings situated in the Forest Site Complex 4K - acidic beech (Fagetum acidophilum). The young trees were assessed 3 years after planting for the following parameters: total shoot length, increment, root collar diameter, number of multiple stems, stem curvature, crown form, length of needles, colour of needles and frost damage. The lowest mortality and the best growth of Douglas fir plants were recorded in small, sheltered gaps. Large, unsheltered gaps showed low survival,...
The health and nutritional status of Norway spruce stands in the Krušné hory Mts. 15 years subsequent to the extreme winter of 1995/96Original Paper
B. Lomský, V. Šrámek, R. Novotný
J. For. Sci., 2013, 59(9):359-369 | DOI: 10.17221/37/2013-JFS
Since 1994, the nutritional status and the air pollution load have been evaluated on 20 research plots, located in young Norway spruce stands in the ridge area of the Krušné hory Mts. The most recent acute damage to the spruce stands, in the winter of 1995/96, was connected with a long-lasting inversion situation in the eastern area of the Krušné hory Mts. Today, the health status of the spruce stands, expressed in terms of the crown defoliation, has recovered and is comparable to that found in other regions of the Czech Republic. The sulphur and fluorine content of the needles has decreased significantly. The long-term negative effect of acid deposition...
Partial evaluation of questionnaires monitoring the need of knowledge in forest workers from selected EU countriesOriginal Paper
A. Skoupý, J. Vanbelle, J. Zöscher, T. Lampe, F. Esser, V. Turpeinen, P. Caseau, P. Máchal, R. Klvač, V. Nový, T. Embo
J. For. Sci., 2013, 59(9):370-375 | DOI: 10.17221/36/2013-JFS
The paper informs about partial results gathered and processed in the framework of the international research project "Learn for Work", Leonardo da Vinci programme. The goal of the research project was to acquire information about the subjective perception of importance and subsequent use of theoretical knowledge in practical use in the forest worker occupation. The research, monitoring the practical need of theoretical knowledge of workers in the forest, was realized in selected six countries of the European Union - Belgium, Austria, France, Finland, Germany and Czech Republic. Another objective of this research was to find out whether there are significant...