Template-Type: ReDIF-Article 1.0 Author-Name: editors Title: Index of Volume 54 Journal: Journal of Forest Science Pages: I-VI Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/2917-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2917-JFS.html File-Format: text/html Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:2917-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Barna Author-Workplace-Name: Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia Title: The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance Abstract: The paper summarizes the results of 15-year natural regeneration for beech of five plots with different densities situated in the Western Carpathians Mts. Three of the plots were subjected to differently intensive shelterwood cuttings (plots L, M, H), one plot was clear-cut (CC), and one was left without intervention - as a control (C). The number of one-year-old seedlings decreased proportionally with increasing cutting intensity. The ANOVA results document a significant influence of cutting intensity on the abundance of both one-year-old and older seedlings. The abundance of beech seedlings was initially increasing with increasing cutting intensity, and, having reached the peak on plot M (medium intensity), there followed a decrease in the seedling abundance. Lower numbers of beech seedlings on plots subjected to less intensive cutting (C, L) result from less favourable growth conditions in comparison with plot M. On the other hand, cutting of higher intensity (H, CC) resulted in lower numbers of fructifying parent trees. The medium cut intervention having provided the plot M with stocking of 0.5 (50% of the stand) resulted in a lower number of seed resources (limiting factor for natural regeneration). However, for the other factor - seedling establishment (survival and recruitment) this plot (M) represents an ecological optimum in beech regeneration in the given conditions. Keywords: regeneration development, stand density, shelterwood cutting, clear cutting, Fagus sylvatica L Journal: Journal of Forest Science Pages: 533-544 Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/42/2008-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/42/2008-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200812-0002.txt Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:42-2008-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Pittner Author-Workplace-Name: Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia Author-Name: M. Saniga Author-Workplace-Name: Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia Title: A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitude Abstract: This report assesses the structural diversity of the spruce virgin forest in Nefcerka NNR in the Tatra National Park (TANAP). The structure of the virgin forest is evaluated by the indices proposed by Clark & Evans, Füldner and Jaehne & Dohrenbusch. Concerning the spatial distribution of trees (Clark & Evans index), a statistically significant difference was confirmed between the growth stage and the optimum and the breakdown stages. The influence of altitude on the tendency of concentration of virgin forest trees was also confirmed. In the case of complex diversity evaluation by the JAEHNE & DOHRENBUSCH index (1997), a statistically significantly different diversity of the spruce virgin forest between the growth stage and the other stages was found. The analysis of the regeneration processes revealed their good dynamics even at an altitude above 1,400 m, and with the ascending altitude (above 1,300 m) the dead wood and knolls of wind-thrown roots have the greater importance as seedbeds. Keywords: spruce virgin forest, structural diversity, regeneration processes Journal: Journal of Forest Science Pages: 545-553 Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/21/2008-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/21/2008-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200812-0003.txt Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:21-2008-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Pietrzykowski Author-Workplace-Name: Department of Forest Ecology, Faculty of Forestry, Agricultural University of Cracow, Cracow, Poland Title: Soil and plant communities development and ecological effectiveness of reclamation on a sand mine cast Abstract: The aim of the study was to assess terrestrial ecosystem development (mainly vegetation and soil characteristics) in the area of a sand mine cast (located in southern Poland) that has been either reclaimed or left for natural succession. A total of 20 sites in a chronosequence of 5, 17, 20 and 25 years were set up in two site categories: reclaimed and non-reclaimed sites. Selected properties of initial soils and features of vegetation were measured and they included carbon accumulation in soil; biomass and diversity of communities were also estimated. Next, based on carbon accumulation, the energy trapped in ecosystem components was estimated. Although the results of plant community investigation did not show the same distinct differences between site categories, the case study suggests that reclamation significantly accelerates ecosystem development. In comparison with spontaneous succession, the complete forest reclamation was found to increase the amount of carbon accumulation, thickness of humus horizon, and energy trapped in soil organic carbon and plant biomass in the developing ecosystem 2-3 times and nitrogen accumulation 5 times. Keywords: sand mining, reclamation, succession, initial soils, organic matter, plant development, biodiversity Journal: Journal of Forest Science Pages: 554-565 Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/38/2008-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/38/2008-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200812-0004.txt Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:38-2008-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Y. Lei Author-Workplace-Name: Research Institute of Resource Information and Techniques, Chinese Academy of Forestry, Beijing, China Title: Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis ) Abstract: Weibull distribution was used to fit tree diameter data collected from 86 sample plots located in Chinese pine stand in Beijing. To estimate the Weibull distribution parameters, three methods [namely maximum likelihood estimation method (MLE), method of moment (MOM) and least-squares regression method (LSM)] were compared and evaluated on the basis of the mean square error (MSE) and sample size. For these sample plots, the moment method was superior for estimating the parameters of Weibull distribution for tree diameter distribution. Keywords: Weibull distribution, diameter distribution, parameter estimation Journal: Journal of Forest Science Pages: 566-571 Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/68/2008-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/68/2008-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200812-0005.txt Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:68-2008-JFS Template-Type: ReDIF-Article 1.0 Author-Name: E. Kula Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry in Brno, Brno, Czech Republic Title: Response of birch (Betula pendula Roth) phytophages to liming Abstract: : In the course of 2004-2007, the effects of compensation liming at the application dose of 1.5-3-6 t/ha dolomitic limestone on the elimination or activation of phytophages or other types of damage resulting in the loss of assimilatory organs did not become evident yet. A shift was noted in the fluctuation expressed indirectly by the extent of damage to the assimilatory area in feeding caused by an undetermined hymenopterous larva (summer increase), weevils (spring and summer decline and increase in 2007), Coleophora serratella (decline), Eriocrania sp. (increase), mites Acalitus rudis (increase), Eriophyes leionotus (increase in 2006-2007). Only signs of a positive response to higher doses of dolomitic limestone characterized the mite Eriophyes leionotus. Keywords: birch Betula pendula Roth, liming, dolomitic limestone, phytophages, Eriophyes leionotus Journal: Journal of Forest Science Pages: 572-578 Volume: 54 Issue: 12 Year: 2008 DOI: 10.17221/43/2008-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/43/2008-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200812-0006.txt Handle: RePEc:caa:jnljfs:v:54:y:2008:i:12:id:43-2008-JFS