Journal of Forest Science, 2010 (vol. 56), issue 10
Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic
I. Drápelová, L. Menšík, J. Kulhavý, I. Marková
J. For. Sci., 2010, 56(10):429-441 | DOI: 10.17221/99/2009-JFS 
Concentrations and fluxes of sulphur and nitrogen compounds in bulk precipitation and in throughfall were evaluated and compared for two experimental sites in the Czech Republic: one situated at Rájec (Drahanská upland, 610 m a.s.l.) and the second one at Bílý Kříž (Moravian-Silesian Beskids, 908 m a.s.l.) both with similar stands of young Norway spruce. The three-year study performed during 2006-2008, revealed statistically significant differences in nitrate nitrogen concentrations in bulk precipitations and in ammonium nitrogen concentrations both in bulk precipitation and in throughfall between the two sites. Higher nitrogen compounds concentrations...
Growth and physiological state of beech seedlings grown in a nursery in different light conditions
A. Jurásek, J. Leugner, J. Martincová
J. For. Sci., 2010, 56(10):442-450 | DOI: 10.17221/8/2010-JFS
Seedlings of European beech of two populations (from the 4th and 7th forest altitudinal zone) were grown in a shaded and unshaded plastic greenhouse. The objective was to compare seedling growth and the function of assimilatory organs and to determine their reactions after transfer to different light conditions.Seedlings grown in the unshaded plastic greenhouse (the sun variant) were taller and stronger at the end of the first growing season and had the higher weight and volume of shoots and root systems than seedlings grown in the shade. A higher number of leaves, larger total leaf area and higher dry matter of leaves per 1 plant...
Growth of hybrid poplars in silviculture at the age of 6 years
L. Čížková, V. Čížek, H. Bajajová
J. For. Sci., 2010, 56(10):451-460 | DOI: 10.17221/26/2010-JFS
Growth and timber production of 28 poplar clones were evaluated. A set of clones was derived from14 clones newly bred in Forestry and Game Management Research Institute in the Czech Republic, eight well-known cultivars of Populus × euroamericana planted in Europe and imported to the Czech Republic, two standard cultivars 'I-214' and 'Robusta' (Populus × euroamericana). Four clones of Populus deltoides were added to the test set. Tree spacing was 4 × 4 m. Stem diameter, tree height and stem volume production were evaluated in 6-years-old trees. Based on the results, it was concluded that the yield of four clones was higher...
The effect of different stand density on diameter growth response in Scots pine stands in relation to climate situations
J. Novák, M. Slodičák, D. Kacálek, D. Dušek
J. For. Sci., 2010, 56(10):461-473 | DOI: 10.17221/14/2010-JFS
The effect of stand density on the resistance of Scots pine (Pinus sylvestris L.) to climatic stress and subsequent response of diameter increment were investigated using data gathered from six long-term experimental series located in the typical pine regions of the Czech Republic (sandy nutrient-poor soils on the Pineto-Quercetum oligotrophicum-arenosum). Diameter growth of dominant individuals (with the largest diameter at the age before the first thinning) was measured in all variants of experimental series (control and thinned). Monthly average temperature and total precipitation were taken from the nearest climatological stations...
Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions
E. Kula, W. Ząbecki
J. For. Sci., 2010, 56(10):474-484 | DOI: 10.17221/33/2010-JFS
Research on merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) was carried out in spruce stands of different age in the area with an endemic population (Moravian-Silesian Beskids, Czech Republic) and in the area with an epidemic population (Beskid Żywiecki, Poland) of the eight-toothed spruce bark beetle Ips typographus (L.). The structure of merocoenoses was characterized separately for standing trees attacked by bark beetles, trees struck by lightning, trees affected by fungal pathogens and wind-felling and trees in the form of snags and fragments. The occurrence of cambioxylophagous insects,...