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Svihla V.,Fugnerova 809 | Cernohous V.,Vyzkumny ustav lesniho hospodarstvi | Sach F.,Vyzkumny ustav lesniho hospodarstvi
Zpravy Lesnickeho Vyzkumu | Year: 2010

The study aims to contribute to knowledge of hydrodynamic processes in a soil profile of mountain-humic podzol under small-pole spruce stand. Method is based on investigation of hydrological balance of 60cm topsoil. Totally 144 tensiometers placed in different depths (15, 30, 45 and 60 cm) were used to measure suction pressure within square plot of 1are area. Behaviour of gravitation water in macropores (hydraulic head of groundwater table) was investigated using a piezometer pipe put into a drill well. Thorough hydropedological investigation was conducted to obtain parameters needed for hydrological balance calculation. The study quantifies regime of hydrodynamic processes in the mountain podzol during growing period 2007 and reveals a dominant influence of rainfall on water flow in an aerated zone of the soil.


Dusek D.,Vyzkumny ustav lesniho hospodarstvi | Slodicak M.,Vyzkumny ustav lesniho hospodarstvi | Novak J.,Vyzkumny ustav lesniho hospodarstvi
Zpravy Lesnickeho Vyzkumu | Year: 2010

The Scots pine (Pinus sylvestris L.) stands occupy about 17% of the forests area of the Czech Republic. In order to find out the effect of positive selection from above on growth and development of Scots pine stands, the experiment was founded in 25-year old even-aged stand in 1962. The stand lies in south part of Moravia near Bzenec village at an altitude of 205 m above sea level. Geological bed is sand, soil type was determined as haplic podzol arenic, forest type group was determined as nutrient-poor pine-oak (Pineto-Quercetum oligotrophicum arenosum). Research was done on two comparative plots: control plot without thinning and thinned plot with positive selection from above. The data were collected from 1962 to 2008 every fifth year. The results showed that thinning led to higher diameter of mean stem and dominant trees and also higher stand volume. Thinning also favourably influenced stability of the stand, whereas disintegration of control plot started after the age of fifty years.


Bartos J.,Vyzkumny ustav lesniho hospodarstvi | Kacalek D.,Vyzkumny ustav lesniho hospodarstvi
Zpravy Lesnickeho Vyzkumu | Year: 2010

Prosperity of six tree species was investigated in juvenile-stage forest stand. An experimental plot was established at an altitude of 520 m a. s. l. on Fagetum acidophilum site which had been used as meadow till 2001. Coniferous species mortality did not exceed 5% and broadleaves species mortality was less than 9% in the 8th year after planting. Douglas fir was the only unmixed conifer which was significantly higher (456 cm) compared to Douglas fir mixed with other species. On the other hand, sycamore maple was significantly higher (325 cm) in mixture. Unmixed spruce, beech and fir did not differ from mixed variants. As for DBH, mixed larch, unmixed Douglas fir and mixed sycamore maple are the thickest species (67, 57 and 22 mm respectively). Studied conifers seem to be much more efficient in terms of forest environment restoration.


Monitoring of successive stages of alder stands (Alnus glutinosa) from natural regeneration on abandoned agricultural lands was realized in 2008 and 2009. Analysed alder stands arose on silt deposition after local flooding in 1998. Stand analysis were realized on the circular plots (10 m2 each) in regular networks. Alder dominated in both stands. Basic stand characteristics differed due to different stand density, dimensions of the mean stems were similar. Density of living trees varied from 11.6 to 24.4 thousand pcs per ha, stand basal areas were 20 a 43 m2/ha. Thin trees dominated in both stands, high production potential indicates the thickest trees (over 10 cm). High number of trees positively influenced tree quality. Measurement did not confirm the relationship between light and stand density on circular plots. Vital weed occurred on both stands.


Content of presented paper consists in detailed description of findings having been obtained up to now during evaluation of national European beech provenance plots series 1995. Mortality, height growth, stem form and phenology of individual tested beech provenances, have been evaluated at the age of 5 - 9 years.


Biba M.,Vyzkumny ustav lesniho hospodarstvi | Vicha Z.,Vyzkumny ustav lesniho hospodarstvi | Janova K.,Vyzkumny ustav lesniho hospodarstvi | JarabaC M.,Vyzkumny ustav lesniho hospodarstvi
Zpravy Lesnickeho Vyzkumu | Year: 2010

Since 1953 hydrological effects of forest have been investigated in the catchment Červík in the Moravskoslezské Beskydy Mts. Also influence of forest regeneration on water run-off and water balance has been studied. No significant impact of logging and silviculture was proved on water run-offs both for minimal flows and for culmination during enhanced discharges. Relationship between precipitation and run-offs is very tight and together with orographic and soil conditions reduce the possible influence of forest stands on run-offs. Forest is not able to prevent from floods during extreme precipitation, but its principal importance is during lower precipitation when surface run-off is transformed to subsurface one.


The paper recapitulates history, knowledge and legal-economic fulfilment of the research-application project for complex management of two demonstration watersheds Řehucí and Vilčok within perimeter of water-supply reservoir Šance in the Beskydy Mts. The principal project of top world level proved feasibility of complex hydrologic service of forest management in protection zones of water resources and its continual sustainability. The project concurrently added to presentation of detention hydrologic service of forest management in mountainous protected region of natural water accumulation.

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