Journal of Forest Science, 2009 (vol. 55), issue 8
Humus conditions of stands with different proportion of Douglas fir in the Hůrky Training Forest District and Křtiny Training Forest Enterprise
L. Menšík, J. Kulhavý, P. Kantor, M. Remeš
J. For. Sci., 2009, 55(8):345-356 | DOI: 10.17221/9/2009-JFS 
The paper presented evaluates reserves and chemical composition of forest floor of three stands of Douglas fir, spruce and spruce with beech at acid sites (3K) in the Hůrky Training Forest District (TFD) and at a meso-trophic site (4H) in the Křtiny Training Forest Enterprise (TFE). The aim of the study was to evaluate: (i) reserves of forest floor, (ii) soil reaction, (iii) total content of carbon and nitrogen for the forest floor layers, iv) C/N ratio, and (v) the content of dissolved organic carbon (DOC). The lowest reserve occurs in the Douglas fir stand at a mesotrophic site (25.0 t/ha), the highest accumulation...
Different technologies of floodplain forest regeneration from the aspect of soil changes
N. Pernar, E. Klimo, S. Matić, D. Bakšić, H. Lorencová
J. For. Sci., 2009, 55(8):357-367 | DOI: 10.17221/8/2009-JFS
Like in other types of forests the greatest changes in the soil of floodplain forest stands occur during their regeneration. These changes are manifested as changes in the content and dynamics of organic matter in the soil. Research was conducted in oak and ash floodplain forests in the eastern part of Croatia and in southern Moravia in the Czech Republic. The results showed that the type and extent of these changes depended, in addition to environmental factors, also on the technology of forest regeneration. The natural regeneration of oak in floodplain forests of Spačva (eastern Croatia) protects soil from dramatic changes in soil by successive regeneration...
Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West Carpathian Mts.)
D. Kellerová
J. For. Sci., 2009, 55(8):368-375 | DOI: 10.17221/1/2009-JFS
We studied air quality in a sub-mountain beech ecosystem in the Kremnické vrchy Mts., Central Slovakia. We chose the method of passive sampling. The amounts of airborne pollutants (H+ and O3) were determined at regular time intervals, covering the whole vegetation period, on four plots with different stocking. The original stand was subjected to two cuts with a purpose to simulate the phases of a common silvicultural process. The first research period (1999-2003) started 10 years after the first cutting, the second (2004-2006) was launched immediately after the second cut. Ten years after applying the first cut, the differences...
Current possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts.
P. Kubík, O. Mauer
J. For. Sci., 2009, 55(8):376-386 | DOI: 10.17221/75/2008-JFS
The paper analyses possibilities of repeated use of Norway spruce (Picea abies [L.] Karst.) in the regeneration of existing Norway spruce stands, in the regeneration of large-area clearcuts, and in the reconstruction of the stands of substitute tree species (European white birch [Betula verrucosa Ehrh.]) after a change in the emission situation in the northeastern Krušné hory Mts., comparing the prosperity of these plantations with plantations in the unpolluted Bohemian-Moravian Upland. The survey included 26 research plots aged 1-12 years, situated predominantly on acidic sites in Forest Altitudinal Vegetation Zones (FAVZ) 6 and 7 in...
The effect of shelterwood silvicultural method on the plant species diversity in a beech (Fagus orientalis Lipsky) forest in the north of Iran
H. Poorbabaei, A. Poor-Rostam
J. For. Sci., 2009, 55(8):387-394 | DOI: 10.17221/40/2008-JFS
To clarify the effect of shelterwood silvicultural method on the diversity of plant species in a beech (Fagus orientalis) forest in the north of Iran, we compared the plant species diversity in three compartments (treatments) where regeneration cuttings were performed with that in a primary compartment. The sampling procedure was a systematic random method and the tree, tree regeneration, shrub and herbaceous species were identified and measured within sampling plots. Results indicated that the mean tree richness in compartment No. 1 (only with one seed cutting) was higher than in the other compartments. The mean richness of understorey species...