Journal of Forest Science, 2011 (vol. 57), issue 10
Site classification vs. wood production: a case study based on Silver fir growth dynamics in the Western Carpathians
M. Bošeľa, R. Petráš, Š. Šmelko
J. For. Sci., 2011, 57(10):409-421 | DOI: 10.17221/34/2011-JFS 
We analysed wood production on an example of Silver fir growth ability within site units defined in the site classification that is currently used in the Western Carpathians. It has arisen as a very important issue, since the site units have been widely used in forestry practice and, moreover, it represents one of the input variables of growth model. Research plots established for development of a yield model for Silver fir in the sixties were used. The Korf growth equation was used to model the Silver fir growth, since it showed the best fit to the data compared to other equations. The test of residual variance of the growth models and the test of...
Expected impacts of climate change on forests: Czech Republic as a case study
T. Hlásny, J. Holuša, P. Štěpánek, M. Turčáni, N. Polčák
J. For. Sci., 2011, 57(10):422-431 | DOI: 10.17221/103/2010-JFS
We provide fundamental information about the future development of selected climate elements in relation to anticipated threat to forests in the Czech Republic. All analyses were carried out in relation to four elevation zones with specific potential forest vegetation - up to 350 m a.s.l. (oak dominance), 350-600 m a.s.l. (beech dominance), 600-900 m a.s.l. (beech-fir dominance), 900-1,100 m a.s.l. (spruce dominance). We found out that while the projected increase in mean annual air temperature is almost constant over the Czech Republic (+3.25-3.5°C in the distant future), the frequency of heat spells at lower elevations is expected to increase dramatically...
Broadleaved regeneration dynamics in the Pine plantation
K.K. Islam, S. Patricia, Y. Rinchen
J. For. Sci., 2011, 57(10):432-438 | DOI: 10.17221/78/2010-JFS
In an Island of the Netherlands, Pine (Pinus nigra) was planted to stabilize the dunes and to protect the arable lands from the blowing sand. This research was conducted to understand the most important environmental factors responsible for a vegetation change in the Pine plantation and effect of this change on the rare orchid population: Goodyera repens and Listera cordata. Vegetation sampling was carried out according to the Braun-Blanquet phytosociologic method within the three sites of this Island. Twinspan analysis confirmed the definition of three site types and redundancy analysis showed a significant difference between...
Results of dynamic penetration test - an indicator of the compaction of surface soil horizons by forestry machinery
K. Rejšek, J. Buchar, I. Vaníček, L. Hromádko, V. Vranová, K. Marosz
J. For. Sci., 2011, 57(10):439-450 | DOI: 10.17221/4/2011-JFS
The objective of research was, on the basis of the exactly predefined input parameters of upper soil horizons of selected forest soils, to perform accurate measurements of the impact of soil loading by tested forestry machinery using the dynamic penetration test. The measurements by the dynamic penetration test in conditions changed by the wheel traffic of forestry mechanization were performed at three localities of the Křtiny Training Forest Enterprise, Masaryk Forest, a special-purpose facility of Mendel University in Brno. The dynamic penetration test was performed with a lightweight dynamic penetrometer. The methodology of the research is based...
Establishment and selected characteristics of the Hády coppice and coppice-with-standards forest research plot (TARMAG I)
J. Kadavý, M. Kneifl, R. Knott
J. For. Sci., 2011, 57(10):451-458 | DOI: 10.17221/3233-JFS
The paper deals with the establishment of the coppice and coppice-with-standards research object under the project Biodiversity and Target Management of Endangered and Protected Species in Coppices and Coppices-with-Standards Included in the System of NATURA 2000. It summarizes reasoning which preceded the selection of the site and provides a detailed description of the methodology of experimental site establishment. It specifies the rules of felling which was planned with the objective to simulate the impact of coppice and coppice-with-standards on biodiversity of endangered and protected species. It also describes the stand condition prior to and...
Effects of selection and shelterwood method on quality and quantity of trees along skid trails in beech (Fagus orientalis, Lipsky) forests
R. Naghdi, A.M. Jalali, K. Mohamadi, M. Akbarimehr
J. For. Sci., 2011, 57(10):459-465 | DOI: 10.17221/132/2010-JFS
The effects of two silvicultural methods on quality and quantity of forest trees (along skid trails) were studied. The aim of this study was to compare the effects of shelterwood and selection methods on forest stand, and to compare the results with intact stand. Asalem forests were selected for this research. The belt transects of 10 × 100 m were used to collect the data. The plots were classified as those with low traffic, medium traffic, high traffic and control. The analysis of data showed that the degree of damage to forest stand, quality and quantity of trees on control plots was lower than along skid trails. In addition, there was a significant...