Journal of Forest Science, 2005 (vol. 51), issue 7
Structure and dynamics of stands of primeval character composed of the little-leaf linden (Tilia cordata Mill.) in the "Las lipowy Obro¿yska" reserve (southernPoland)
A. Jaworski, Z. Ko³odziej, L. Bartkowicz
J. For. Sci., 2005, 51(7):283-304 | DOI: 10.17221/4565-JFS 
The little-leaf linden stand, investigated in this study, is a relict of the Atlantic period. On three permanent sample plots, situated in a strictly protected reserve, trees were measured and classed in 1990 and 2000. Stands in these areas represented the growing up stage in transition to the optimum stage (Obro¿yska 1), the optimum stage (Obro¿yska 2), and the growing up stage, the selection structure phase (Obro¿yska 3). In 2000 the percentage of linden by volume was 97% in Obro¿yska 1 and 2, and 77% in Obro¿yska 3, while the stand volume was 768, 861, and 761 m3/ha, and basal area 60, 62, and 55 m2/ha,respectively. These stands...
Structure and functions of the types of Norway spruce (Picea abies[L.] Karst.) roots
R. Gebauer, M. Martinková
J. For. Sci., 2005, 51(7):305-311 | DOI: 10.17221/4566-JFS
The aim of the study was to describe variability of the structure of roots in Norway spruce (Picea abies [L.] Karst.) from their growth tips to the stem foot, i.e. anchor roots in relation to their changing functions. Histology and anatomy of plant organs were dealt with by the innumerable number of authors and fundamentals of knowledge in these disciplines have become the self-evident part of botany textbooks. The description of primary and secondary structure of roots is explained in many textbooks by means of drawings depicting the mutual position of particular systems of tissues. However, it refers mostly to the structure of herb roots...
Domestic rare forest tree species - help to the processing industry?
J. Gross
J. For. Sci., 2005, 51(7):312-317 | DOI: 10.17221/4567-JFS
Rare forest tree species that are necessary for the domestic processing industry, especially for the furniture industry, currently occur as scattered trees in many forest stands in theCzechRepublic. For their harvest and supply to the processing industry it is necessary to measure their dimensions and growing stock. Logging technologies are proposed that will enable to harvest and transport this scattered wood mass to buyers. These technologies and used conveyances must not cause any damage either to forest soil or to adjacent stands and they should be economic, i.e. increased costs of processing must be covered by selling price.
Evaluation of the temporal and spatial distribution of non-methane hydrocarbon emissions from the forests inSlovakia
J. Minïá¹
J. For. Sci., 2005, 51(7):318-326 | DOI: 10.17221/4568-JFS
The paper presents the first detailed inventory of non-methane hydrocarbon emissions from forest vegetation in Slovakia. Emissions rates of monoterpene, isoprene and other volatile organic compounds (VOC) were calculated for each main tree species separately using the relevant parameters such as temperature and leaf biomass density. The GIS technology was used for the analysis of spatial distribution of VOC emissions. The annual total VOC emissions from forests in Slovakiaranged from 77 to 98 ktonnes during the period 1990-2000. The percentage of isoprene, mono-terpene, and other VOC emissions is relatively stable and varies in the narrow intervals:...