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    Wyświetlanie 1-8 z 8
    Tytuł:
    Rodowa uprawa zachowawcza jodły pospolitej z rezerwatu "Tisovik" w Puszczy Białowieskiej
    The ancestral conservative tillage of silver fir in the "Tisovik" reserve of the Bialowieza Primeval Forest
    Autorzy:
    Korczyk, A.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311134.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Bialorus
    rezerwat Tisovik
    drzewa lesne
    jodla pospolita
    Abies alba
    uprawa zachowawcza
    Puszcza Bialowieska
    Polska
    uprawy rodowe
    wartosc hodowlana
    Abies alba Mill.
    progeny test
    Białowieża Primeval Forest
    Polska
    Opis:
    The ‘Tisovik’reserve, located in the Belarusian part of the Białowieża Forest, holds an isolated relic stand of silver fir, situated 120 km to the north-east of the main forest. In order to preserve this relic fir stand, a ancestral conservative tillage consisting of the Jd 92 trial (plot I) and the Jd 94 trial (plots II and III) was established between 1992 and 1994 in the Polish part of the Białowieża Forest on the territory of the Hajnówka Forest District. The growth and development of the progeny of 20 firs were characterized by means of long-term observations made in these trials. In 2000 (at the age of 18), the firs in the Jd 92 trial (plot I) reached an average height of 394.86 cm with a mean diameter at breast height of 42.42 mm and the average rate of survival amounted to 75%. In the Jd 94 trial, the rate of fir survival on plot II was 70% (at the age of 15) with an average height of 277.08 cm and a diameter at breast height of 36.62 mm, while on plot III only 50 trees with an average height of 198.6 cm and a diameter at breast height of 24.49 mm survived. The results of this study show that the fir progeny in the ‘Tisovik’ reserve is of high breeding value. Therefore, the silver fir seed stock of the ‘Tisovik’ reserve is suitable for the establishment of new plantations in the Polish part of the Białowieża Forest and the Mazury-Podlasie Region.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 2; 153-167
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie ciepła spalania i wartości opałowej szyszek wybranych gatunków drzew leśnych
    Comparison of heat of combustion and calorific value of the cones and wood of selected forest tree species
    Autorzy:
    Aniszewska, M.
    Gendek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312894.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    biomasa
    szyszki
    cieplo spalania
    wartosc opalowa
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    swierk pospolity
    Picea abies
    modrzew europejski
    Larix decidua
    jodla pospolita
    Abies alba
    cone
    wood
    biomass
    heat of combustion
    calorific value
    Opis:
    Every year, scaling plants buy (up to tens of tons) cones which needs to be peeled. After the process of scaling, the cones themselves are waste, which is partly sold. The problem of waste disposal is especially severe in plants where the processing is performed by electrically-powered scaling cabinets, but the problem does not apply to facilities where pellets are burned to produce heat. We examined the heat of combustion and calorific value of the residues from scaling plants that can be used in the production of refined wood fuels. The residues consist of the empty cones of pine, spruce, larch as well as husks and stems of silver fir. Additionally, we conducted measurements of the heat of combustion for wood and cones of each species and compared them to their respective calorific values The results revealed that the average calorific value of the cones is in the range 17.81–19.86 MJ/kg. Our work showed that empty cones have a significantly higher calorific value and heat of combustion than the wood of spruce, larch and fir. In the case of pine, cones and wood did not differ significantly. These results led us to the conclusions that empty de-scaled cones can be utilized as a valuable primary solid fuel or fuel additive for the production of refined products for the local market. Due to the low annual production of cones in comparison to other materials such as sawdust and wood chips, pine cones should be used as a supplement, to enrich fuels of inferior quality by enhancing their energetic properties.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 231-236
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Symulacja dynamiki drzewostanów sosnowych polskiej i ukraińskiej części Roztocza w warunkach zmian klimatu
    Simulation of Scots pine stand dynamics under climate change conditions in the Polish and Ukrainian parts of Roztocze
    Autorzy:
    Kozak, I.
    Czekajska, P.
    Kozak, H.
    Stępień, A.
    Kociuba, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318626.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Roztocze [geogr.]
    Polska
    Ukraina
    drzewostany sosnowe
    dynamika drzewostanu
    gatunki lasotworcze
    sosna zwyczajna
    Pinus sylvestris
    gatunki domieszkowe
    buk zwyczajny
    Fagus sylvatica
    jodla pospolita
    Abies alba
    swierk pospolity
    Picea abies
    grab pospolity
    Carpinus betulus
    czynniki klimatyczne
    suma temperatur efektywnych
    roczna suma opadow
    zmiany klimatyczne
    symulacja komputerowa
    modele symulacyjne
    model FORKOME
    Scots pine
    beech
    fir
    spruce
    FORKOME computer model
    Roztocze
    prognosis
    Opis:
    The study was conducted in the Polish (Roztoczanski National Park) and Ukrainian (Rava-Rus'ka Landscape Reserve and Yavorivskyi National Park) parts of the Roztocze region. In each of these locations three research areas were established in Scots pine (Pinus sylvestris L.) stands under similar ecological conditions. The purpose of this study was to carry out a survey of possible scenarios for pine stand dynamics in the Polish and Ukrainian parts of Roztocze using the FORKOME model. A control scenario was compared with four other climate change scenarios (warm dry and warm humid; cold dry and cold humid) for a period of covering the next 100 years. Using the control scenario, the FORKOME model predicted that for the next 100 years pine stands will dominate in terms of biomass and number of trees. The warm-dry and warm-humid climate scenarios resulted in slightly reduced biomass of pine stands. However pine would still maintain its dominance, although with a noticeable increase in beech and fir biomass. Nevertheless, in term of the number of trees during the second half of the simulation, it is beech and fir that dominate stand 1 in Roztoczanski National Park. Under the climate cooling scenario (cold dry and cold humid), the biomass of pine and spruce would increase during the next 100 years. Pine trees that would dominate in terms of their numbers, although the number of spruce individuals also tends to increase. The results presented in the paper indicate that the FORKOME model is very useful when investigating different climate changes scenarios in the Roztocze region.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 215-226
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ wybranych elementów charakterystyki drzewostanów na intensywność występowania kornika drukarza Ips typographus (L.) w Beskidzie Żywieckim
    Impact of selected stand characteristics on the occurrence of the bark beetle Ips typographus (L.) in the Beskid Zywiecki Mountains
    Autorzy:
    Grodzki, W.
    Starzyk, J.R.
    Kosibowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317562.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Beskid Zywiecki
    siedliska lesne
    drzewostany
    miazszosc drzew
    wydzielanie sie posuszu
    szkodniki roslin
    kornik drukarz
    Ips typographus
    wystepowanie
    insect outbreak
    site
    stand characteristics
    spatial analysis
    Picea abies
    Opis:
    Recently, Norway spruce stands in Beskid ¯ywiecki (Western Carpathians) have been plagued by bark beetle outbreak affecting an extensive area over a large range of altitudes. Georeferenced data (2356 records) from 2009–2011 of the volume of felled spruces showing insect infestation in forest sub-compartments were analysed with respect to selected site and stand characteristics. The infestation intensity varied between individual parts of the examined area. Spruce mortality, recorded evenly across all slope expositions, was higher in the zones 800 m – 1000 m and above 1000 m than in the zone below 800 m. The infestation intensity increased slightly with spruce representation in the stands and was higher in stands older than 80 years. There was no clear correlation between spruce mortality and site quality. However, in areas with more diverse and fertile sites mortality was lower. In overall, the results obtained in this study are in line with previous knowledge on the subject, but patterns describing bark beetle preferences in infested areas appear to be less pronounced than those found in earlier publications. Risk assessment and current planning of forest protection measures in stands affected by bark beetle outbreaks should be based on the here described characteristics of spruce susceptibility to insect infection.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 159-169
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie zgnilizny odziomkowej jodły pospolitej (Abies alba Mill.) w obszarach chronionych
    Occurrence of the silver fir (Abies alba Mill.) butt rot in protected areas
    Autorzy:
    Niemtur, S.
    Chomicz, E.
    Kapsa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1313044.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    fitopatologia lesna
    drzewa lesne
    jodla pospolita
    Abies alba
    choroby roslin
    zgnilizna odziomkowa
    wystepowanie
    obszary chronione
    parki narodowe
    rezerwaty przyrody
    silver fir
    butt rot
    nature reserve
    national park
    acoustic tomography
    Picus Sonic
    Carpathians
    Opis:
    The aim of the study was to analyze butt rot incidences in silver fir stands of selected nature reserves and national parks. The study included 11 stands in Carpathian forests and for comparison 4 stands outside the Carpathians. To identify butt rot in fir trees, we used the non-invasive method of acoustic tomography. We tested 30 randomly selected fir trees in each of the 15 stands using Picus Sonic tomography to determine butt rot occurrence and to assess the proportion (%) of healthy wood in cross-sections of the tree trunk. The results indicate significant differences in the frequency of butt rot in silver fir at the individual level as well as the population level. This variability in frequency was not dependent on geographical location of the investigated stands.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 4; 343-352
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sygnał klimatyczny w przyroście radialnym wybranych iglastych gatunków drzew w Leśnym Zakładzie Doświadczalnym Rogów
    Climate signal in the radial growth of selected coniferous species from the Forest Experimental Station in Rogow
    Autorzy:
    Bijak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339908.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    dendroklimatologia
    drzewa lesne
    jodla pospolita
    Abies alba
    modrzew europejski
    Larix decidua
    sosna zwyczajna
    Pinus sylvestris
    daglezja zielona
    Pseudotsuga menziesii
    przyrosty radialne
    czynniki klimatyczne
    dendroclimatology
    Scots pine
    silver fir
    European larch
    Douglas fir
    central Poland
    Opis:
    I present dendroclimatological analysis of coniferous tree species growing under the same environmental conditions in the WULS-SGGW Forest Experimental Station in Rogów (51° 49' N, 19° 53' E, ca. 190 m a.s.l). The study focuses on silver fir, European larch, Scots pine and Douglas fir. For each species, tree-ring width and annual sensitivity chronologies were developed for the period 1931–2010. Analysed species show considerable similarity of their radial increment course (GLK up to 67%, the t-value of 3,5–9,5). The relationship obtained for of the influence of climate conditions on radial growth of these species is typical of the relationships reported from other locations in lowland Poland. Late winter and early spring temperature, especially during February-March, is the main factor affecting tree-ring formation. The general relationship demonstrates that this seasonal thermal limitation operates at an inter-regional and interspecific level in determining the growth of coniferous tree species in Poland. Whereas, the dependence of these species on precipitation is much less significant.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 101-110
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ podłoża na wzrost jednoletnich i dwuletnich sadzonek jodły pospolitej i buka zwyczajnego produkowanych w kontenerach styropianowych
    Substrate influences the height of one- and two-year-old seedlings of silver fir and European beech growing in polystyrene containers
    Autorzy:
    Banach, J.
    Skrzyszewska, K.
    Świeboda, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318718.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    szkolkarstwo lesne
    szkolki lesne
    szkolki kontenerowe
    produkcja sadzonek
    drzewa lesne
    jodla pospolita
    Abies alba
    buk zwyczajny
    Fagus sylvatica
    sadzonki
    wzrost roslin
    podloza uprawowe
    dodatki do podlozy
    grzyby mikoryzowe
    Hebeloma crustuliniforme
    substrate
    peat
    sawdust
    seedling quality
    container seedling
    Opis:
    The effectiveness of different peat-based substrates was compared for the propagation of two mountain tree species (silver fir and European beech). The experiment was set up in spring of 2006, and seedlings were grown in polystyrene multipots for 2 years. Four types of substrate were applied: (1) newly prepared 1:1 peat-sawdust mixture ; (2) a peat-sawdust mixture which had already been used for five production periods; (3) a peat substrate produced in the ‘Nêdza’ container nursery (Rudy Raciborskie Forest District), consisting of peat and perlite; (4) a peat substrate, as described for (3), with added mycorrhizal fungus Hebeloma crustuliniforme. After sowing, polystyrene multi-pots were placed in a transparent tent. During the autumns of 2006 and 2007, for both species and each substrate type, 25 seedlings were randomly selected for measurement of their above-ground height, root length, root collar diameter, above- and below-ground fresh weight. Growth of one-year old and two-year-old seedlings of both species differed depending on their substrate. The application of a mycorrhizal inoculum positively affected seedling establishment, since the best height growth and largest seedlings of both species were grown on substrate (4). The growth of one-year-old fir seedlings in the ‘old’ peat and sawdust mixture (2) was similar to those seedlings on the turf substrate (3). Root:shoot allocation differed among the substrates. In fir root:shoot allocation was approximately equivalent at 1:0.9, whereas for beech it was 1:2 in oneyear-old seedlings and 1:1.5 in two-year-old seedlings.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 117-125
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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