Journal of Forest Science, 2003 (vol. 49), issue 10
Vegetation changes in beech and spruce stands in the Orlické hory Mts. in 1951-2001
S. Vacek, K. Matějka
J. For. Sci., 2003, 49(10):445-473 | DOI: 10.17221/4718-JFS 
Plant cenological surveys on the basis of Braun-Blanquet's seven-point scale were made on 34 research plots in the course of studies of vegetation changes in beech and spruce stands in the Orlické hory Mts. over period of 1951-2001. The acquired data were processed not only by traditional plant coenological methods but also by numerical analyses (agglomerative and divisive classification, ordination, species diversity). The results document marked changes that occurred in species-rich spruce communities of the association Athyrio alpestre-Piceetum (Aa-P) as well as in species-poorer communities of the associations Vaccinio myrtilli-Piceetum...
Static stability of forest stands in the seventh altitudinal vegetation zone in Slovakia
B. Konôpka, J. Konôpka
J. For. Sci., 2003, 49(10):474-481 | DOI: 10.17221/4719-JFS
Models evaluating static stability (resistance to breaking or uprooting of trees caused by wind, snow or ice) of forest stands in the seventh altitudinal vegetation zone were determined. The empirical material came from 180 research plots (High Tatra and Low Tatra Mountains) established within the research project Research on methods for mountain forest management based on sustainable Development. Static stability was characterized by the slenderness ratio that was calculated from the mean height and diameter of target trees. Then the particular forest stands were categorized with regard to slenderness ratio, mean diameter and absolute site...
Evaluation of the growth and health of different poplars in the Latorica area in Východoslovenská nížina conditions
Š. Kohán
J. For. Sci., 2003, 49(10):482-489 | DOI: 10.17221/4720-JFS
The paper presents the results of evaluating the growth and health of 20 different poplars from the Aigeiros group in 30-year populetum Leles on uninundated alluvia of the Latorica River in ecological conditions of the lowland Východoslovenská nížina. The populetum is situated on medium-heavy loamy soils in the group of forest site types Ulmeto-Fraxinetum carpineum. The results of evaluation document that out of the investigated poplar clones the poplars I-214, I-476, Blanc du Poitou, Flachslanden and P. nigra (Baka 5) had the best height and diameter growth and maximum volume production. Their health status was also very...