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Wyświetlanie 1-4 z 4
Tytuł:
Stan wielogatunkowego lasu naturalnego (Abies, Fagus, Picea) regla dolnego w rezerwacie Oszast na tle monokultur świerkowych w Beskidzie Żywieckim i Beskidzie Śląskim
A comparison of lower montane natural forest (Abies, Fagus, Picea) in Oszast Reserve and spruce monocultures in the Zywiecki Beskid and Slaski Beskid
Autorzy:
Jaworski, A.
Pach, M.
Powiązania:
https://bibliotekanauki.pl/articles/1316186.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
lasy gorskie
regiel dolny
rezerwaty przyrody
rezerwat Oszast
las naturalny
drzewostany wielogatunkowe
sklad gatunkowy
swierk pospolity
Picea abies
buk zwyczajny
Fagus sylvatica
jodla pospolita
Abies alba
klon jawor
Acer pseudoplatanus
jarzab pospolity
Sorbus aucuparia
zmiany skladu gatunkowego
zasobnosc drzewostanu
struktura drzewostanu
rozklad piersnic
smiertelnosc
odnowienia lasu
stand volume
dbh distribution
mortality
regeneration
Opis:
The aim of this research was to find out what changes occurred between 1999-2009 in Oszast reserve in the volume, species composition and diameter at breast height (dbh) distribution of the forest stand, and the number and height of regeneration. The objective was to determine what would be condition of these managed lower montane multispecies forest stands (Swiss irregular shelterwood method or selection cuttings) and what role spruce would play in them if they have not been replaced by spruce monocultures. The research was conducted on three permanent circular sample plots (s.p.), each had size of 1/3 ha. Over 10 years, standing volume of the forest stand increased on s.p. 1 (from around 562 m3 ha-1 to 649 m3 ha-1) and s.p. 3. (from 653 m3 ha-1 to 660 m3 ha-1), while decreased on s.p. 2. (from 421 m3 ha-1 to 378 m3 ha-1). The species composition, defined on the basis of volume share (averaged for the three s.p. jointly), did not undergo consistent changes. However, the relative dominance of beech over spruce was determined based on tree numbers. The average spruce mortality (averaged from three s.p.) did not exceed 10% and was slightly higher than that of beech (6%), and lower than fir mortality (15%). Nevertheless, spruce did not show any symptoms of dieback. The reasons behind its mortality were fallen trees and windbreaks. In regeneration, on the whole, beech or sycamore predominated, and the proportion of spruce and fir was small. In the future spruce and fir may even decrease further by competitive ability of dynamically regenerating beech. Abandonment of forest management to promote greater diversity of species, may favour the formation of beech monocultures, or forest stands dominated by beech, everywhere that beech is already present or will be introduced. The maintenance of stable, multispecies forest stands, with co-dominant fir, beech and spruce of native origin, requires natural or artificial regeneration of spruce and fir, manipulated to restore fir up to about 30%, and reduce spruce down to about 40%. This would be possible through the use of the Swiss irregular shelterwood method and selection system, and by continuous tending of regeneration.
Źródło:
Leśne Prace Badawcze; 2014, 75, 1; 13-23
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany udziału buka, jodły i świerka w dolnoreglowych drzewostanach naturalnych w rezerwacie "Dolina Łopusznej" (Gorczański Park Narodowy)
Changes in the proportion of beech, fir and spruce in the natural stands of the lower-montane zone in the 'Łopuszna Valley' Reserve (Gorczanski National Park)
Autorzy:
Jaworski, A.
Pach, M.
Powiązania:
https://bibliotekanauki.pl/articles/991817.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Gorczanski Park Narodowy
regiel dolny
rezerwaty przyrody
rezerwat Dolina Lopusznej
drzewostany naturalne
sklad gatunkowy
zmiany skladu gatunkowego
buk zwyczajny
Fagus sylvatica
jodla pospolita
Abies alba
swierk pospolity
Picea abies
liczba drzew
zasobnosc drzewostanu
klasy grubosci
number of trees
stand volume
species composition
mortality
regeneration
Opis:
In the natural stands of the lower−montane zone in the 'Łopuszna Valley' Reserve (Gorczański National Park) consisting of beech, fir and spruce, a specific phenomenon was observed, which in other natural forests of the Western Carpathians occurred only occasionally. In the years 1981−2011, along with the increase in the proportion of beech in stands and in regeneration, which is now common issue in the forests of Central Europe, an increase or stability in the proportion of fir in stands and an increase in the proportion of fir in the undergrowth was reported. At the same time, the number of spruces in stands clearly decreased, while in the regeneration they occurred sporadically. Reduction in the proportion of spruce leads to a change in the species composition of multi−species stands i.e. from stands with co−dominant beech, fir and spruce to stands with dominant beech or co−dominant beech and fir. In managed forests, it is necessary to maintain the prevalence of all tree species for their productivity, which requires the application of the best silvicultural practices (regeneration and tending).
Źródło:
Sylwan; 2013, 157, 03; 213-222
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mortality, recruitment, and increment of trees in the Fagus-Abies-Picea stands of a primeval character in the lower mountain zone
Autorzy:
Jaworski, A
Kolodziej, Z.
Lapka, M.
Powiązania:
https://bibliotekanauki.pl/articles/41489.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Dentario glandulosae-Fagetum association
forest
Abies alba
Fagus sylvatica
development stage
developmental phase
tree
mortality
recruitment
increment
lower mountain zone
Opis:
From among three stands, situated in the lower mountain zone, and representing the association Dentario-glandulosae Fagetum, the Łopuszna I stand, being in the growing up stage and phase of selection forest, reached the highest increment (8.5 m3/ha/year, i.e. 1.3% of actual stand volume/ha measured at the end of the control period). Stands, Łopuszna II, being in the stage of an intensive break-up, and Łopuszna III, being in the stage of an initial break-up, reached smaller increments (5.4 and 6.3 m3/ha/year respectively, i.e. each 0.9% of actual stand volume/ha). The greatest tree mortality occurred in stands Łopuszna II and III (14.1 and 10.5 m3/ha/year respectively), and the smallest in the stand Łopuszna I (4.8 m3/ha/year). The knowledge about the value of mortality, recruitment, and increment, expressed in the number of trees and in volume units, may greatly help in planning the amount of cut which would secure sustainability of the forest ecosystem in the layer of trees in the economic as well as in the protection forests, under similar stand and site conditions, managed by the selection cutting permitting to realize the conception of a close-to-nature silviculture.
Źródło:
Dendrobiology; 2007, 57; 15-26
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budowa, struktura i dynamika drzewostanow o charakterze pierwotnym w rezerwacie 'Dolina Lopusznej' [Gorczanski Park Narodowy]
Structure and dynamics of stands of a primeval character in the 'Dolina Lopusznej' nature reserve [Gorce National Park]
Autorzy:
Jaworski, A.
Kolodziej, Z.
Lapka, M.
Bartkowicz, L.
Powiązania:
https://bibliotekanauki.pl/articles/45830.pdf
Data publikacji:
2006
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
drzewa martwe
sklad gatunkowy
rozklad piersnic
drzewostany pierwotne
Picea abies
lesnictwo
parki narodowe
struktura drzewostanu
nekromasa
zasobnosc drzewostanu
budowa drzewostanu
fazy rozwojowe
Gorczanski Park Narodowy
zmiany skladu gatunkowego
jodla pospolita
buk zwyczajny
Abies alba
odnowienia naturalne
Fagus sylvatica
rezerwat Dolina Lopusznej
swierk pospolity
drzewa lesne
Źródło:
Leśne Prace Badawcze; 2006, 4; 35-59
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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