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Allometric relationships between stem volume and the biomass of Norway spruce
1998
Pokorny, R. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
The objectives of this study were (I) to establish allometric relationships between the stem volume and biomass of the stem, branches, leaves and the leaf area, and crown dimensions of individual trees, (II) to determine the relative aboveground biomass distribution, (III) to determine the vertical gradient of the specific leaf area and (IV) to estimate the aboveground stand biomass and the leaf area. Diameter at 0.3m height above ground and height of each tree were measured as the basic biometrical characteristics. The coefficient of the shape of the trunk was found by Huber's method.
Afficher plus [+] Moins [-]Comparison of soil thermal regimes in a deforested area with various grass cover in the Beskids Mts. [Czech Republic]
1998
Tuma, I. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
The studies of grass communities, which spread in deforested areas, also involved observations of soil thermal regimes. Three sites were chosen in order to determine differences in diurnal and seasonal variations of soil temperatures: (1) open site (barren) without plant cover, (2) site covered by a young, lower and thinner stand of Avenella flexuosa, and (3) old, dense stand of Calamagrostis villosa with a layer of plant litter on the soil surface. Soil temperatures were measured at the soil surface and in the soil depth of 5 and 10 cm. In summer months, the greatest differences in maximal temperatures recorded at the soil surface and at the 5, 10 cm depth between the bare site and the old stand of C. villosa represented 21.6, 15.9, 12.4 deg C, respectively. Soil temperatures measured in the bare plot in autumn months were lower than those in grass stands.
Afficher plus [+] Moins [-][Determination of the coefficient of conversion of photosynthetically active radiation in above ground biomass of Norway spruce]
1995
Dvorak, V. | Oplustilova, M. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
Dynamics of shoot growth in two Calamagrostis villosa stands of the Kehyne Mts. [Czech Republic]
1995
Holub, P. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
Distribution of aboveground biomass in a clearcut area as a response to stress factors (the Beskids Mts.) [Czech Republic]
1995
Jakrlova, J. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
Annual production and turnover rate of underground biomass in Calamagrostis villosa and Avenella flexuosa (Bily Kriz, Beskids) [Czech Republic]
1995
Fiala, K. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
The influence of increased nitrogen availability on the growth and content of elements in the aboveground biomass of Calamagrostis villosa
1999
Holub, P. (Akademie Ved, Brno (Czech Republic). Botanicky Ustav)
