خيارات البحث
النتائج 301 - 310 من 333
Hydric regime of mountainous spruce forest stand
1998
Tuzinsky, L. (Technicka Univ., Zvolen (Slovak Republic). Lesnicka Fakulta)
Analysis of incidence of extraordinary sums of precipitation at the Bily Kriz station [the Moravian-Silesian Beskids Mts., Czech Republic] in 1997
1998
Roznovsky, J. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic))
The growth of Calamagrostis villosa at different localities in the Moravian-Silesian Beskids Mts. [Czech Republic]
1998
Holub, P. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny) | Pande, K.
Natural regeneration of beech under ecologically difficult conditions
1998
Penaz, J. | Martinek, J. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Fakulta Lesnicka a Drevarska)
In the region of Knehyne-Velka Stolova in the Moravian-Silesian Beskids, where there are ecologically difficult conditions for functioning forest ecosystems, possibilities were studied for the naturat regeneration of beech. The study of problems was particularly related to generative propagation, however, cases of vegetative propagation were also found. Potential possibilities of regeneration are related to the seed year 1995. Rooting ability of layered branches or lying beech trees wes studied. Analysis is given of a rooting beech branch.
اظهر المزيد [+] اقل [-]Norway spruce fine roots investigation in the West Beskids Mts.
1998
Kodrik, M. (Slovenska Akademia Vied, Zvolen (Slovak Republic). Ustav Ekologie Lesa)
Long-term influence of enhanced UV-B irradiation on photosynthetic characteristic of Norway spruce (Picea abies) in the conditions of the Beskids Mts. [Czech Republic]
1998
Sprtova, M. | Marek, M.V. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
The cloned saplings of Norway spruce (7 years old) were exposed to ambient UV-B irradiation or enhanced BV-B irradiation (+25 %) continuously over three growing seasons. Comprehensive analysis of CO2 assimilation and chlorophyll a fluorescence was performed at the end of the third growing season to evaluate the influence of enhanced UV-B irradiation. The analysis resulted in observations of decreased photosynthetic activity, mainly of RUBISCO activity, as a result of long-term influence of enhanced UV-B irradiation. Morever, the deep impact of enhanced UV-B irradiance on the level of electron transport and thus enhanced sensitivity to photo-inhibition was demonstrated.
اظهر المزيد [+] اقل [-]A study of growth and morphology of Athyrium distentifolium growing in different environmental conditions in the Beskydy Mts. [Czech Republic]
1998
Pande, K. (Ithaca College, New York (USA). Dept. of Biology)
A study of the effect of the growth activity of grasses on accumulation and losses of organic matter and nutrients on deforested sites [Czech Republic]
1998
Fiala, K. | Tuma, I. | Holub, P. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
Norway spruce increment as related to the type of branching in the Moravian-Silesian Beskids Mts. [Czech Republic]
1998
Hauck, O. | Palat, M. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic))
Data necessary for the determination of the proportion of various types of branching in stands under study, their variability within a tree, accuracy of classification of the type of branching, damage to particular types of branching due to breakage and initial age for their reliable recognition were obtained according to method from 1,336 trees situated in 11 trial plots in the region of the Beskids. Statistically significant differences were determined in the diameter and height increments for particular types of branching.
اظهر المزيد [+] اقل [-]Water balance and erosion intensity in mid-European small forested basins
1998
Jarabac, M. | Chlebek, A. (Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Frydek-Mistek (Czech Republic))
