Template-Type: ReDIF-Article 1.0 Author-Name: Ľ. Ditmarová Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovak Republic Author-Name: J. Kmeť Author-Workplace-Name: Faculty of Forestry, Technical University Zvolen, Zvolen, Slovak Republic Author-Name: M. Ježík Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovak Republic Author-Name: J. Váľka Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovak Republic Title: Mineral nutrition in relation to the Norway spruce forest decline in the region Horny Spis (Northern Slovakia) Abstract: In this contribution we present the results of analyses of selected mineral nutrients in assimilatory tissues of spruce trees at different developmental phases (plants, adult trees) in the region Horný Spiš. The very close connection between mineral nutrient cycling and other physiological processes in the plants has been well recognised. The presented analyses of mineral nutrient cycling were done within comprehensive eco-physiological research assessing the physiology and health status of spruce stands in the study area. The research was conducted directly in the stand (Hliníky locality, Horný Spiš - two research plots: 1. plot with spruce stand in advanced decline, 2. control plot - without visible decline symptoms) and, at the same time as a pot experiment. The objective of the pot experiment was to verify the supposed negative influence of soil environment (in the locality with advanced decline of spruce stands) on the growth of spruce trees and their mineral nutrient conditions. The analyses of the material sampled from the stands revealed high amounts of manganese (MnT) that were in the toxicity range on both examined plots. Another negative finding was high amounts of toxic aluminium, primarily in needles of adult trees growing on the plot with symptoms of acute stand decline. This reflects a very low value of pH/H2O - 3.7 (pH/KCl - 3 to 2.8) and total exhaustion of the soil suffering, moreover, from the lack of soil water. As for the differences in amounts of individual macronutrients between the plot with intensive decline and the control plot, no significant differences were found, with the exception of Fe. On the other hand, evident significant differences in risk elements Pb, Hg and Al were found. As for the differences in nutrient contents in spruce seedlings in the pot experiment (variants 1 to 6), we can see significant differences in macronutrient contents (N, P, Ca, K, Mn), in some cases also in risk element contents (Al). Keywords: nutrition, Norway spruce, stress, spruce decline Journal: Journal of Forest Science Pages: 93-100 Volume: 53 Issue: 3 Year: 2007 DOI: 10.17221/2148-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2148-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200703-0001.txt Handle: RePEc:caa:jnljfs:v:53:y:2007:i:3:id:2148-JFS Template-Type: ReDIF-Article 1.0 Author-Name: P. Samec Author-Workplace-Name: Forest Management Institute Brandýs nad Labem, Frýdek-Místek branch, Frýdek-Místek, Czech Republic Author-Name: D. Vavříček Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Author-Name: P. Šimková Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Author-Name: J. Pňáček Author-Workplace-Name: Forests of the Czech Republic, State Enterprise, Jeseník Forest District, Jeseník, Czech Republic Title: Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands Abstract: The soil is an irreplaceable component of forest ecosystems. Soil-forming processes directly influence element cycling (EC). Plant-soil interaction is a specific part of EC. Plant-soil interactions were observed on an example of natural spruce stand (NSS), semi-natural spruce stand (SNSS) and allochthonous spruce stand (ASS) in conditions of the spruce forest altitudinal zone (1,140-1,260 m a.s.l.; +3.0°C; 1,200 mm) of the Hrubý Jeseník Mts. (Czech Republic, Central Europe), where Norway spruce (Picea abies [L.] Karst.) is the main edificator and stand-forming tree species. We evaluated the soil properties of H- and Ep-horizons at selected sites with Haplic and Skeletic Podzols and they were compared with the nutrient status of spruce. A method of the principal component analysis was used for definition of the basic hypotheses: (1) each forest stand is in specific and topically individual interactions with soil and these interactions influence its state, (2) the influence of forest management reflects in humification and in the nutrient status in plant assimilatory tissues. Cluster analysis calculated results comparable with the multivariate analysis of variance. The results show that the continuity of linear and multivariate statistical methods gives the approach to detection of the forest stage based on soil and plant tissue data. Keywords: Norway spruce (Picea abies [L.] Karst.), humification, nutrition, cation exchange capacity (CEC), principal component analysis Journal: Journal of Forest Science Pages: 101-112 Volume: 53 Issue: 3 Year: 2007 DOI: 10.17221/2173-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2173-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200703-0002.txt Handle: RePEc:caa:jnljfs:v:53:y:2007:i:3:id:2173-JFS Template-Type: ReDIF-Article 1.0 Author-Name: I. Kupka Author-Workplace-Name: Faculty of Forestry and Environment, Czech University of Life Sciences Prague, Prague, Czech Republic Title: The root-plant ratio changes in the first growing periods of wild cherry (Prunus avium L.) plantations Abstract: The root-plant ratio is one of the important parameters for planting stock quality. We suppose that the ratio is one of the driving variables for the growth performance of new plantation in the forest. The study summarises data on the volume of major parts of 4 years old wild cherry trees. An allometric analysis of different parts of plants in relation to the growth performance of wild cherry trees was done. The results show a close positive relationship between the volume of the whole root system and aboveground biomass. The same is true of the fine root proportion in the root system. Data also document that the efficiency of root system is not decreasing during the root development - at least in the investigated period. The same results were obtained for fine root efficiency. Data confirm the importance of the root-plant ratio for the growth performance of new plantation in the forest provided that harmful factors are not at a limiting level. Keywords: regeneration, root system, growth performance of young plantation, wild cherry Journal: Journal of Forest Science Pages: 113-118 Volume: 53 Issue: 3 Year: 2007 DOI: 10.17221/2147-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2147-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200703-0003.txt Handle: RePEc:caa:jnljfs:v:53:y:2007:i:3:id:2147-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Kupčák Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Title: Analysis of some dynamic series of forest production and trends of forest economics in the Czech Republic Abstract: Functions of wood production in forestry are historically determined by felling possibilities of forest resources. Revenues from timber sales create a financial space for silvicultural operations thus providing for management continuity. These determinations have however recently shown a rather negative trend of development due to the development of timber prices on the one hand and due to increasing inputs on the other hand, last but not least also due to the projections of near-natural forest management methods and increasing area under special management regimes. In their synergy, all these factors lead to economic impacts reflected not only in the profit of forest owners but also in economic results of other entities. The paper presents an analysis into the trends of forest management primary economic variables in the Czech Republic in the period from 1998-2004. Keywords: production in forestry, economics of forest management, dynamic (time) series, trend Journal: Journal of Forest Science Pages: 119-128 Volume: 53 Issue: 3 Year: 2007 DOI: 10.17221/2172-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2172-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200703-0004.txt Handle: RePEc:caa:jnljfs:v:53:y:2007:i:3:id:2172-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Gryc Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Author-Name: P. Horáček Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry Brno, Brno, Czech Republic Title: Variability in density of spruce (Picea abies [L.] Karst.) wood with the presence of reaction wood Abstract: The study was aimed to assess the integral value that determines wood properties - wood density at a moisture content of 0% and 12%. The wood density was researched in a sample tree with the presence of reaction compression wood. The density was determined for individual zones (CW, OW, SWL and SWR). The zone where compression wood (CW) is present has a higher density than the remaining zones. On the basis of the acquired data, 3D models were created for individual zones; they describe the variability of wood density along the stem radius and stem height. The influence of the radius seems to be a statistically highly significant factor. The wood density is significantly higher in samples with the presence of compression wood. When the proportion of compression wood in the sample was 80%, the wood density was 1.5 times higher compared to wood without compression wood. Keywords: spruce, density, compression wood Journal: Journal of Forest Science Pages: 129-137 Volume: 53 Issue: 3 Year: 2007 DOI: 10.17221/2146-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2146-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200703-0005.txt Handle: RePEc:caa:jnljfs:v:53:y:2007:i:3:id:2146-JFS