Template-Type: ReDIF-Article 1.0 Author-Name: K. Rejšek Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: O. Haveraaen Author-Workplace-Name: Norwegian University of Life Science, Ås, Norway Author-Name: A. Sandnes Author-Workplace-Name: Department of Forest- and Natural Resource Policy, Ministery of Agriculture and Food, Oslo, Norway Author-Name: K. Somerlíková Author-Workplace-Name: Faculty of Regional Development and International Studies, Mendel University in Brno, Brno, Czech Republic Title: Soil characteristics under selected broadleaved tree species in East Norway Abstract: Comprehensive analyses of soil properties of sites of native Scandinavian broadleaved tree species were performed in 36 habitats in East Norway. The material consisted of stands of silver birch (Betula pendula Roth.), white birch (Betula pubescens Ehrh.), black alder (Alnus glutinosa Gaertn.), speckled alder (Alnus incana Moench.), European ash (Fraxinus excelsior L.), pedunculate oak (Quercus robur L.) and sessile oak (Quercus petraea [Matt.] Liebl.). The main objective was to describe the vertical characteristics and variations in some selected soil variables of the soil profiles. Particular soil horizons of 15 Brunisolic soils, 11 Regosolic soils, 6 Gleysolic and 4 Podzolic were sampled and analyzed for soil texture, bulk density, specific density, porosity, oxidizable carbon, total nitrogen content, pH in water, exchangeable acidity, exchangeable cations and anions (Mg, Ca, Mn, Al, S, Fe, B, P and K), cation exchange capacity and base saturation. No regular patterns were found in selected soil properties when tested between various soil units in silver birch stands. Furthermore, silver birch stands were found on sites, which topsoil (i) significantly differed in their cation exchange capacities, (ii) did not differ significantly in their pH values, and (iii) mostly differed in their clay contents and (iv) mostly did not differ in BS. Differences among the Humic Regosols, Luvic Gleysols, Sombric Brunisols, Eutric Brunisols and Humo-Ferric Podzols for silver birch stands in their topmost horizons of humified organic matter intimately mixed with the mineral fraction horizons and differences among particular soil horizons for the main soil properties under all the selected broadleaved tree species stands are discussed. Keywords: broadleaved forest stands, forest soils, soil chemistry, soil classification, soil properties Journal: Journal of Forest Science Pages: 295-306 Volume: 56 Issue: 7 Year: 2010 DOI: 10.17221/86/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/86/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201007-0001.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:7:id:86-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Černohous Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Author-Name: F. Šach Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Author-Name: D. Kacálek Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Title: Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed Abstract: Runoff generation under various natural conditions has often been studied in forested watersheds for a long time. In 1967, Hewlett designed a variable source area model. The model is based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a discharge event. The runoff investigation was carried out in a forested watershed situated in the summit area of the Orlické hory Mts. The watershed has a drainage area of 32.6 ha with the land-surface elevation ranging from 880 to 940 m a.s.l. Runoff components, their amounts and ratios were calculated using a simple graphical-mathematical method of the hydrograph recession limb analysis according to a reservoir model representing the particular components (base flow, subsurface flow and overland flow, in other words slow, accelerated and rapid flows). Comparing the amount of slow and rapid runoff constituents (89.5-99.4% and 0.6-10.5%, respectively), the greater amount of slowly moving water confirmed that overland flow was absent under conditions of forest environment. Not even the drainage treatment altered this positive ratio of the runoff constituents. During the third period, under stabilized hydrology and stand conditions, the accelerated and rapid runoff increased again, however maximally by 10% and 4%, respectively, not reaching the initial size of the calibration period. Keywords: drainage treatment, forested watershed, recession limb, runoff components, stormflow hydrograph Journal: Journal of Forest Science Pages: 307-313 Volume: 56 Issue: 7 Year: 2010 DOI: 10.17221/103/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/103/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201007-0002.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:7:id:103-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Leugner Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Author-Name: A. Jurásek Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Author-Name: J. Martincová Author-Workplace-Name: Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech Republic Title: Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock Abstract: The present paper compares the growth of parent trees and potentially stress-tolerant mixtures of clones of Norway spruce (Picea abies [L.] Karst.) progenies coming from a specific locality near the Černá hora peat bog in the Krkonoše Mts. Growth was studied in generative ortet plantations in Trutnov locality and in a mountain ortet plantation Lesní bouda, in the 1st generation clone plantation Benecko and in the 2nd generation clone plantation in the Černohorská rašelina locality. In the latter locality chlorophyll fluorescence and water losses during controlled desiccation were also measured in selected clones compared to control (generatively propagated) spruces. Partial data acquired until now prove the good growth dynamics and physiological state of some clones in extreme climatic conditions indicating that cuttings were taken from vital parent trees growing in exposed mountain localities. Growth relations among the clones were identical in all evaluated localities. The growth of the 2nd generation clone plantation has been markedly influenced by plantation and specific site conditions until now. The mutual interaction of clone growth and site conditions can change in time and therefore the study of clone plantations will continue in the years to come. Keywords: chlorophyll fluorescence, clonal propagation, growth, mother plantations, mountain conditions, Norway spruce, water losses Journal: Journal of Forest Science Pages: 314-322 Volume: 56 Issue: 7 Year: 2010 DOI: 10.17221/92/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/92/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201007-0003.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:7:id:92-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: R. Petráš Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: J. Mecko Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Title: Stability of the development of basic stand parameters of beech yield tables constructed on the basis of short-term observations on research plots Abstract: We compared the development of yield curves of mean and top height and development of mean diameter according to yield tables of beech which were constructed on the basis of short-term investigations with empirical data of repeated measurements on permanent research plots. We performed our study on 86 permanent research plots with 550 repeated measurements. The length of the interval of repeated measurements on the research plots is in the range of 10-43 years. We quantified differences in the development of model and empirical curves by help of basic statistical characteristics. The results show that the actual growth of mean heights is more intensive than in models of yield tables. An opposite situation is for mean diameters. The development of top heights corresponds to the actual growth of beech stands. Keywords: beech, mean diameter, mean height, top height, yield curves, yield tables Journal: Journal of Forest Science Pages: 323-332 Volume: 56 Issue: 7 Year: 2010 DOI: 10.17221/83/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/83/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201007-0004.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:7:id:83-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: N. Byblyuk Author-Workplace-Name: Ukrainian National Forestry University, Lviv, Ukraine Author-Name: O. Styranivsky Author-Workplace-Name: Ukrainian National Forestry University, Lviv, Ukraine Author-Name: V. Korzhov Author-Workplace-Name: Ukrainian Research Institute for Mountain Forestry, Ivano-Frankivsk, Ukraine Author-Name: V. Kudra Author-Workplace-Name: Ukrainian Research Institute for Mountain Forestry, Ivano-Frankivsk, Ukraine Title: Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them Abstract: The paper contains results of comparative investigations of crawler and wheeled skidders regarding their effect on soil surface, undergrowth and rut formation during mountain timber harvesting. It was shown that the extent of erosion resulting from damage to the soil surface depends on the steepness and length of slopes during both construction of skidding tracks and skidding by tractors. Considering the current condition of development of timber harvesting machinery, the use of crawler machines is the main method for transportation of cargos in regions with difficult access. Keywords: crawler and wheeled skidders, damage to ground surface, rut formation, undergrowth damage Journal: Journal of Forest Science Pages: 333-340 Volume: 56 Issue: 7 Year: 2010 DOI: 10.17221/111/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/111/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201007-0005.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:7:id:111-2009-JFS