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    Wyświetlanie 1-44 z 44
    Tytuł:
    Wplyw odleglosci od sciany drzewostanu na zageszczenie i przezywalnosc nalotow sosny zwyczajnej [Pinus sylvestris L.] na zrebach zupelnych i gniazdach
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/819279.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    przezywalnosc
    hodowla lasu
    naloty
    czynniki siedliska
    sosna zwyczajna
    lesnictwo
    siewki
    odnowienia naturalne
    zrab gniazdowy
    zrab zupelny
    odleglosc od sciany drzewostanu
    Pinus sylvestris
    Źródło:
    Sylwan; 2000, 144, 01; 27-42
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ przerzedzenia okapu górnego na rozwój podrostów sosny zwyczajnej (Pinus sylvestris L.) w pogradacyjnych drzewostanach w Lasach Pilskich
    Response of Scots pine [Pinus sylvestris L.] young-growth stands to an overstorey canopy in the postoutbreak stands in Pila Forests
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016341.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    stopien przerzedzenia okapu gornego
    rozwoj roslin
    odnowienia lasu
    hodowla lasu
    podrost
    sosna zwyczajna
    lesnictwo
    odnowienia naturalne
    odnowienia podokapowe
    Pinus sylvestris
    drzewa lesne
    scots pine
    pinus sylvestris l.
    natural regeneration
    undercanopy young−growth stands
    postoutbreak
    stands
    poland
    Opis:
    In the paper the density, height, diameter, slenderness and vitality of the 17 year−old pine young−growth stands depending on the basal area of the shelterwood (four thinning variants: G1−G4). The studies were carried out in eleven 70−90 year−old pine stands heavily damaged in the 80s of the past century by the nun moth (Lymantria monacha L.). With the development of the overstorey the growth, the vitality and the stability of young stands declined. In addition, a decrease in the survival of the young−growth stands under the dense canopy (variant G4) was recorded. A long−term maintenance of young stands under the shelter of the canopy in the areas of low annual precipitation (below 600 mm) requires the reduction of the dbh basal area to the level of at least 15 m3/ha before attaining the age of 15 years.
    Źródło:
    Sylwan; 2007, 151, 01; 20-29
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rębnia przerębowa w drzewostanach sosnowych
    Selection-management in pine stands
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1018245.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    rebnie
    rebnie przerebowe
    lesnictwo
    scots pine
    pinus sylvestris
    multi−generation
    selection−cutting system
    Opis:
    This study presents the results on the structure and volume of many−aged pine stands in private forest holdings managed under semi−selection system. Their volume was ca 150 m3/ha and the basal area ca 20 m3/ha. Pine stands reveal all−age structure. The conditions of reaching the multi−generation pine stands is poor habitat where pine regeneration shows high competitive ability and density distribution of trees, including the occurrence of gaps and openings in stand overstorey ensuring proper conditions for the appearance and development of new regenerations of pine.
    Źródło:
    Sylwan; 2006, 150, 08; 52-60
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ osłony drzewostanu górnego i cięć odsłaniających na wzrost i przyrost wysokości podrostów podokapowych sosny w Lasach Pilskich
    Effect of the upper canopy and removal cutting on the height growth of the pine advance regeneration in Pila Forests
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/973175.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    susza
    drzewostany sosnowe
    podrost
    czynniki wzrostu
    odnowienia podokapowe
    wzrost roślin
    osłona górna drzewostanu
    cięcia odsłaniające
    leśnictwo
    przyrost wysokości
    advance regeneration
    height growth
    response to drought
    Pinus sylvestris
    Opis:
    The paper analyses the height growth and the of height increment of the 18 year−old pine advance regeneration under the shelter of varying canopy densities. A significant effect was found of the stocking of the parental stand on the growth of generation. The height increment increased in response to removal cutting (60% in the second year and 80% in the third year after treatment). In drought years, the greatest relative decrease in height growth of the young−growth stands (by ca 40−60%) occurred in the stands of the greatest canopy closure while it did not occur in the stands to which a removal cutting was applied immediately before the drought year.
    Źródło:
    Sylwan; 2007, 151, 03; 43-51
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw brzozy brodawkowatej [Betula pendula L.] na wzrost i pokroj debu szypulkowego [Quercus robur L.] w uprawach na przykladzie Nadlesnictwa Krynki
    Influence of silver birch [Betula pendula L.] admixture on growth and shape of pedunculate oak [Quercus robur L.] in plantations in Krynki Forest District
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/45841.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    brzoza brodawkowata
    oddzialywanie na rosliny
    pokroj
    hodowla lasu
    Quercus robur
    lesnictwo
    dab szypulkowy
    uprawy lesne
    oslony naturalne
    wzrost roslin
    Betula pendula
    oslony lesne
    uprawy debowe
    drzewa lesne
    Źródło:
    Leśne Prace Badawcze; 2008, 69, 3; 203-209
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość strzał modrzewi różnych pochodzeń na powierzchni proweniencyjnej w LZD Rogów
    Kachestvo stolov listvennicy raznykh proiskhozhdenijj na ehksperimentalnojj ploshhadi v Opytnom lesnichestve v Rogove
    Quality of stems various larch provenances on experimental area in Forest Experimental Station in Rogow
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/811109.pdf
    Data publikacji:
    1989
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewa lesne
    proweniencje
    modrzew
    Larix
    doswiadczenia proweniencyjne
    strzala drzew
    jakosc
    LZD Rogow
    Źródło:
    Sylwan; 1989, 133, 11-12
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost i rozwoj podrostow sosnowych w strefie brzegowej drzewostanu
    Autorzy:
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/813321.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    Pinus
    rozwoj roslin
    wzrost roslin
    odnowienia lasu
    hodowla lasu
    sosna
    podrost
    strefa brzegowa
    lesnictwo
    Źródło:
    Sylwan; 2001, 145, 08; 23-37
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost i jakosc polskich pochodzen modrzewia w wieku 30 lat na powierzchni proweniencyjnej w Rogowie
    Autorzy:
    Andrzejczyk, T.
    Bellon, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/822632.pdf
    Data publikacji:
    1999
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    pokroj
    wzrost roslin
    LZD Rogow
    proweniencje
    hodowla lasu
    modrzew
    lesnictwo
    Larix
    wartosc hodowlana
    drzewa lesne
    Źródło:
    Sylwan; 1999, 143, 03; 5-19
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ terminu i sposobu wycinania brzozy brodawkowatej na jej regenerację i wzrost w uprawie dębowej
    Effect of time and cleaning method on silver birch sprouting ability and growth in oak young growth
    Autorzy:
    Andrzejczyk, T.
    Milewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/987203.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    uprawy debowe
    mlodniki debowe
    zabiegi pielegnacyjne
    ciecia pielegnacyjne
    wycinanie drzew
    terminy zabiegow
    gatunki domieszkowe
    brzoza brodawkowata
    Betula pendula
    zdolnosc regeneracyjna
    regeneracja roslin
    wzrost roslin
    przyrost wysokosci
    betula pendula
    sprouts
    stump height
    growth
    cleaning
    silviculture
    Opis:
    The objective of the study was to examine the sprouting ability and growth of silver birch after cleaning in a 11−year−old oak stand in Kolumna Forest District (central Poland). The purpose of the cleaning was to remove naturally regenerated birch. Six different treatments were applied as a cleaning methods. They differed in time of application and height of cutting or breaking the birch sprouts, i.e. spring cleaning at ground level in every second oak row (W1) or over the entire surface (W2), cutting or breaking at a height of 1 m in spring (W3a, W3b) and cutting or breaking at a height of 1 m in summer (W4a, W4b). We analyzed the formation of new sprouts and their height and dbh increment over a 4−year period after the treatment. On average, after spring cleaning 10−20% of birches produced new sprouts when birch was cut at the ground level. When cut at one meter, 85−90% of birches produced new sprouts. Cleaning in the summer decreased the sprouting ability by 20−25%. There were also significant differences in height growth of sprout between spring (better) and summer (worse) time of cleaning. There were no significant differences in sprouting ability and sprout growth between cutting and breaking when done at the same time of the year. Thus, the most effective way to restrict competition of birch in young oak stands is cutting at ground level.
    Źródło:
    Sylwan; 2017, 161, 04; 295-302
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ przygotowania gleby na wzrost sosny zwyczajnej w pierwszych latach uprawy
    The effect of different methods of soil preparation on the growth of Scots pine during first years after planting
    Autorzy:
    Andrzejczyk, T.
    Augustyniak, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015759.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wzrost roslin
    hodowla lasu
    sosna zwyczajna
    przygotowanie gleby
    lesnictwo
    udatnosc uprawy
    Pinus sylvestris
    drzewa lesne
    uprawy lesne
    soil preparation
    scots pine
    growth
    survival
    Opis:
    The paper provides a comparison of growth and survival of Scots pines during first four years after planting in response to two methods of soil preparation using a double mouldboard plough (a conventional method) and by rotary type disc plough. The studies were carried out in the poor fresh coniferous forest habitat. The discussed soil preparation methods had a significant impact on tree height and diameter, however they did not affect pine survival. Pine growing in furrows made by the disc plough exhibited better height growth; the furrows were shallower than those made by the double mouldboard plough. After four years, the height growth of pines in both experimental variants reached the same level which indicates a short−term effect of soil preparation on pine growth.
    Źródło:
    Sylwan; 2007, 151, 08; 3-8
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw gatunkow domieszkowych na wzrost i pokroj debu szypulkowego [Quercus robur L.] w uprawie zalozonej metoda Szymanskiego
    Effect of admixture species on the growth of pedunculate oak [Quercus robur L.] in a plantation established using the Szymanski Method
    Autorzy:
    Andrzejczyk, T.
    Glodowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/46466.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    odnowienia lasu
    metoda gniazdowa
    metoda Szymanskiego zob.metoda gniazdowa
    uprawy lesne
    wiezba drzew
    drzewa lesne
    dab szypulkowy
    Quercus robur
    wzrost roslin
    pokroj
    gatunki domieszkowe
    lipa
    Tilia
    swierk
    Picea
    Źródło:
    Leśne Prace Badawcze; 2010, 71, 4; 321-330
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw ciec obsiewnych i przygotowania gleby na wzrost i rozwoj nalotow sosny w Puszczy Augustowskiej
    Autorzy:
    Andrzejczyk, T
    Twarog, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/53357.pdf
    Data publikacji:
    1998
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    ciecia obsiewne
    uprawa roli
    rozwoj roslin
    wzrost roslin
    odnowienia lasu
    przezywalnosc roslin
    sosna zwyczajna
    lesnictwo
    siewki
    odnowienia podokapowe
    Puszcza Augustowska
    Pinus sylvestris
    Źródło:
    Prace Instytutu Badawczego Leśnictwa. Seria A; 1998, 843-851; 5-29
    0369-9870
    Pojawia się w:
    Prace Instytutu Badawczego Leśnictwa. Seria A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozwój naturalnego odnowienia sosny zwyczajnej na powierzchni przygotowanej pługiem dwuodkładnicowym
    The performance of natural regeneration of Scots pine following soil preparation using double mouldboard plough
    Autorzy:
    Andrzejczyk, T.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026749.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wzrost roslin
    przezywalnosc
    odnowienia lasu
    hodowla lasu
    sosna zwyczajna
    przygotowanie gleby
    lesnictwo
    odnowienia naturalne
    zageszczenie roslin
    Pinus sylvestris
    drzewa lesne
    scots pine
    pinus sylvestris l.
    natural regeneration
    soil preparation
    Opis:
    The objective of the study was to analyse the density, survival, height and quality of Scots pine (Pinus sylvestris L.) seedlings growing in the furrows and on the ridges. On poor sandy soils (fresh coniferous forest habitat) the performance of seedlings growing on ridges was superior while in a moderately fertile type of mixed coniferous forest habitat where the competition of forest floor vegetation was high, natural regeneration occurred almost entirely in the furrows.
    Źródło:
    Sylwan; 2003, 147, 05; 28-35
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ warunków siedliskowych na strukturę i zasobność drzewostanów świerkowo-sosnowych w Puszczy Augustowskiej
    Impact of site conditions on the structure and volume of spruce-pine stands in the Augustowska Primeval Forest
    Autorzy:
    Andrzejczyk, T.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016334.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    warunki siedliskowe
    hodowla lasu
    lesnictwo
    struktura drzewostanu
    drzewostany swierkowo-sosnowe
    zasobnosc drzewostanu
    Puszcza Augustowska
    norway spruce
    picea abies
    spruce−pine stands
    sub−boreal stands
    age structure
    multi−storeyed structure
    site
    Opis:
    The role of spruce in shaping the structure and volume of pine stands in the Augustowska Primeval Forest (north−eastern Poland) increases with the increase of site fertility. On poor coniferous forest sites, spruce occurs mainly in an understorey and sporadically as an admixture species, whereas on medium−fertile and fertile sites it builds the second storey and occurs in the upper storey accounting for about 30−40% of stand volume. In mature pine stands of the Augustowska Primeval Forest, spruce comes from natural regeneration. Taking into consideration the course of the regeneration process, four types of spruce age structure are distinguished.
    Źródło:
    Sylwan; 2007, 151, 01; 30-40
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza zagęszczenia samosiewów brzozy i sosny na gniazdach na podstawie modelu promieniowania słonecznego
    Analysis of birch and pine seedling density in regeneration patches on the basis of solar radiation model
    Autorzy:
    Bolibok, L.
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013442.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    samosiewy
    hodowla lasu
    czynniki srodowiska
    naslonecznienie
    lesnictwo
    Betula
    zageszczenie roslin
    zmiennosc
    Pinus sylvestris
    brzoza
    sosna zwyczajna
    rebnie gniazdowe
    odnowienia naturalne
    gap
    natural regeneration
    scots pine
    silver birch
    solar radiation model
    spatial variability
    Opis:
    The spatial variability of the density of Scots pine and silver birch natural regeneration in gaps has different pattern in subsequent development stages. The pine seedling density was inversely proportional to the amount of solar radiation reaching the floor in artificial gap estimated by modeling (the highest density occurred in the southern, shaded part of the gap). The top soil layers drying−off that is a result of the insolation is thought to be the main factor limiting seed germination and early growth of both species, however pine response at this stage was greater. The highest birch undergrowth density was observed in the central part of gaps. It might be the result of relatively low root competition of old trees and a good light supply in this part of the gaps.
    Źródło:
    Sylwan; 2008, 152, 02; 10-19
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ redukcji konkurencji brzozy brodawkowatej na wzrost dębu bezszypułkowego w fazie młodnika
    Effect of reducing silver birch competition on growth of sessile oak during the thicket stage
    Autorzy:
    Andrzejczyk, T.
    Milewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/985742.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany mieszane
    brzoza brodawkowata
    Betula pendula
    konkurencyjnosc
    mlodniki
    dab bezszypulkowy
    Quercus petraea
    wzrost roslin
    betula pendula
    interspecific competition
    mixed−stand
    quercus
    stand treatment
    Opis:
    Naturally regenerated silver birch is one of the most abundant competitor for planted seedlings in central Poland. The effect of the interaction between planted oak seedlings and naturally regenerated birch was studied in 14−17−years−old sessile oak stand. The experiment was established at stand age of 14−years. At that time, there were around 4000 oaks and 10000 birches per hectare. A sample of dominant individuals of oak were selected and one of three treatments were applied to each individual. The treatments included: (i) removal of all naturally regenerated trees in a radius of 1 m (W1), (ii) removal of all naturally regenerated trees in a radius of 2 m (W2) and (iii) untreated control (K). Breast height diameter and height of selected oaks were measured during three years following the experiment establishment. The release of competition resulted in greater diameter and height growth. The diameter growth was increasing with an increment of free space from oak and was the greatest in the W2 treatment. The increment of height growth was similar regardless of the treatment radius. In practical forestry, silver birch can be recommended as admixture in pure oak stands with low survival rate as replacement for dead oaks. However, a minimum distance of 2 m between oak and birch should be kept.
    Źródło:
    Sylwan; 2019, 163, 06; 452-459
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ grabu (Carpinus betulus L.) na wzrost i przeżywalność dębu (Quercus robur L.) w fazie młodnika
    Effect of hornbeam (Carpinus betulus L.) on growth and survival of pedunculate oak (Quercus robur L.) during the thicket stage
    Autorzy:
    Andrzejczyk, T.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985865.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany mieszane
    mlodniki
    drzewa lesne
    grab pospolity
    Carpinus betulus
    oddzialywanie na rosliny
    dab szypulkowy
    Quercus robur
    wzrost roslin
    przyrost wysokosci
    przyrost piersnicy
    artificial regeneration
    carpinus
    interspecific competition
    mixing form
    mixed−stand
    quercus
    silviculture
    Opis:
    Growth and mortality of oak (Quercus robur L.) in young mixed stands with various admixture of hornbeam (Carpinus betulus L.) in the period of 9−13 years after planting were examined. The trial stand is located in central Poland (51.827023° N, 19.922315° E). It was established in 2004 on a moderately fertile site. Four experimental variants with different participation of oak (O) and hornbeam (H) were established: W1 – an oak monoculture (control variant, 100% O), W2 – a mixed stand consisting of two rows of oak and one row of hornbeam (67% O, 33% H), W3 – a mixed stand consisting of one row of oak and one row of hornbeam (50% O, 50% H), W4 – a mixed stand characterized by a single tree mixture, with three oaks and one hornbeam alternately occurring in each row (75% O, 25% H). During the first two years of the study period the height increments of oak trees were significantly larger in the study variants with hornbeam (the biggest in W3 variant), while during the next two years, the largest values of height increments occurred in the control variant (W1). Through the second part of the study period, the most pronounced, negative effect of hornbeam on the dbh increment of oak trees took place in the W3 variant. During the first nine years after planting the survival rate of oak trees in the variants with hornbeam were similar (82−94%) as in the control variant (85%). However, during the next four years, three times more oaks died in W3 variant (16,5%) than in other variants (5−7%). In general, the results obtained suggest that in order to create mixed oak stands with hornbeam as a nursery species, the share of hornbeam should not exceed 20−25% of all planted trees. The above value appears to be acceptable from the point of view of the negative competitive effects of hornbeam on oak trees during the initial stages of stand development.
    Źródło:
    Sylwan; 2018, 162, 12; 989-997
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu pielęgnowania uprawy na wzrost dębu
    Effect of cleaning treatments on a growth of sessile oak in young growth phase
    Autorzy:
    Milewski, M.
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/987058.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    uprawy lesne
    zabiegi pielegnacyjne
    czyszczenia wczesne
    drzewa lesne
    dab bezszypulkowy
    Quercus petraea
    wzrost roslin
    przyrost drzew
    przyrost piersnicy
    przyrost wysokosci
    wspolczynnik smuklosci
    silviculture
    stand tending
    cleaning
    quercus petraea
    Opis:
    We examined growth of oaks after cleaning carried out in a 11−year−old stand in Kolumna Forest District (central Poland). The purpose of the treatment was to remove naturally regenerated species mainly birch. Four different cleaning variants were applied. They differed in time of application and height of unwanted trees i.e. spring cleaning at ground level in every second oak row (W1) or over the entire surface (W2), breaking at a height of 1 m in spring (W3) or in summer (W4) and control (K) where trees were not removed. We analyzed height and its increment, dbh and its increment as well as slenderness, i.e. h:d ratio, in 4−year−long period after treatment. The study reviled that the cleaning, regardless of the applied method, significantly improved oak growth, while lack of cleaning led to increased competition of birch. The pressure from the other species firstly reduced diameter increment and later the height increment (tab.). As a result, the h:d ratio of oaks increased. The 4−year height and dbh increment were similar in all the applied treatments but in the last year of study the dbh increment in variants W2 and W4 was significantly higher than in W1 and W3 due to greater competition of birch in these variants (figs. 1 and 2). Cleaning done on a limited area provides satisfactory growth and stability for young oaks, but it is probable that such a stand needs more frequent intervention than the one from W2 cleaning variant.
    Źródło:
    Sylwan; 2017, 161, 03; 189-195
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gleby i siedliska drzewostanów nasiennych dębu szypułkowego (Quercus robur) i dębu bezszypułkowego (Q. petraea) w Polsce
    Soils and forest site types of the seed stands of common (Quercus robur) and sessile (Q. petraea) oaks in Poland
    Autorzy:
    Andrzejczyk, T.
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989647.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    dab bezszypulkowy
    Quercus petraea
    dab szypulkowy
    Quercus robur
    drzewostany nasienne
    siedliska lesne
    gleby lesne
    bonitacja drzewostanow
    quercus
    seed stands
    forest site
    soil
    silviculture
    Opis:
    The aim of the study was to investigate the structure of forest site types and of soil types of oak seed stands in Poland. The study was comparatively conducted with reference to sessile (Quercus petraea) and common (Q. robur) oaks. As in Poland the seed stands are established only in stands characterized by favourable both growth parameters and timber quality, it was suspected that the results of the study would enable to indicate optimal sites and soil units for oak breeding in Poland. The study was conducted on the basis of data obtained from the SEMEN database (www.bnl.gov.pl) which were broadened by descriptions of the investigated seed stands found in the Forest Data Bank (www.bdl.lasy.gov.pl). For both oak species, the research was conducted with reference to the two types of seed stands: permanent (WDN) and temporary (GDN). In total, 531 stands of Quercus petraea and 2043 of Q. robur located across whole Poland were investigated in the study. It was found that optimal soils as well as forest site types overlap for both investigated oak species only for fresh broadleaved forest (Lśw). For other forest type sites distinct differences for the oak species were found. The optimum for common oak were expanded towards the wet sites (moist broadleaved forest – Lw, and riparian forest – Lł), while for sessile oak towards semi−fertile mixed broadleaved forest (LMśw). It is interesting that seed stands of both oak species overgrow not only fine−textured soils, but significant share of them (ca. 50% area of Q. petraea and 15% of Q. robur seed stands) occurs on sandy soils (Brunic Arenosols mainly). It proves that Brunic Arenosols constitute forest sites enabling production of broadleaved forests characterized by favourable growth parameters and high timber quality. However, it is possible unless the soil have been podzolized by conifers due to podzolized Brunic Arenosols were rarely represented in the oak seed stands and, if so, the stands were characterized by relatively low site index. It was also stated that on podzolized Brunic Arenosols of fresh mixed coniferous forest (BMśw) admixture of oak should enable reducing negatively impact of conifers on a soil.
    Źródło:
    Sylwan; 2016, 160, 08; 674-683
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lasotworcza rola swierka pospolitego [Picea abies L.Karst.] Puszczy Knyszynskiej i Puszczy Bialowieskiej
    Autorzy:
    Andrzejczyk, T.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/824314.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    gatunki lasotworcze
    Picea abies
    lesnictwo
    Puszcza Bialowieska
    Puszcza Knyszynska
    swierk pospolity
    drzewa lesne
    Źródło:
    Sylwan; 2000, 144, 02; 5-18
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost i rozwój odnowień jodły, buka, dębu i lipy pod okapem drzewostanu modrzewiowego o różnym stopniu przerzedzenia
    Growth and development of fir, beech, oak and lime planted under the canopy of larch stand with different degrees of thinning
    Autorzy:
    Bellon, S.
    Zybura, H.
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/819362.pdf
    Data publikacji:
    1983
    Wydawca:
    Polskie Towarzystwo Leśne
    Źródło:
    Sylwan; 1983, 127, 09-10
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ przygotowania gleby na zagęszczenie, wzrost i jakość samosiewów sosny w warunkach podokapowych
    The effect of soil preparation on density, growth and quality of natural regeneration of pine under the canopy
    Autorzy:
    Andrzejczyk, T.
    Drozdowski, S.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026387.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    wzrost roslin
    samosiewy
    hodowla lasu
    przygotowanie gleby
    lesnictwo
    odnowienia naturalne
    odnowienia podokapowe
    scots pine
    natural regeneration
    soil preparation
    Opis:
    The studies were conducted in the years of 1997−2001. The effect of four methods of soil preparation (ploughing with double mouldboard plough LPZ−75, disc plough PTL−2, disc harrowing and ridge formation) on natural regeneration of pine under the canopy shelter was analysed. Significant differences in the density, height and vitality of seedlings in the variant II (ploughing with disc plough) and variant IV (ridge formation) were found in the second and third year of studies. In the following years the differences between the variants were insignificant due to the heavy damage of seedlings caused by the cockchafer larvae. Neither of the methods applied protected the seedlings against this damage.
    Źródło:
    Sylwan; 2003, 147, 03; 19-27
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odnowienie naturalne drzew w Puszczy Białowieskiej
    Natural regeneration of trees in the Bialowieza Forest
    Autorzy:
    Brzeziecki, B.
    Andrzejczyk, T.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/985949.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    odnowienia naturalne
    drzewa lesne
    topola osika
    Populus tremula
    brzoza brodawkowata
    Betula pendula
    brzoza omszona
    Betula pubescens
    olsza czarna
    Alnus glutinosa
    sosna zwyczajna
    Pinus sylvestris
    dab szypulkowy
    Quercus robur
    jesion wyniosly
    Fraxinus excelsior
    klon pospolity
    Acer platanoides
    wiaz gorski
    Ulmus glabra
    swierk pospolity
    Picea abies
    lipa drobnolistna
    Tilia cordata
    grab pospolity
    proces dorastania
    ekosystemy lesne
    dynamika lasu
    active approach
    deer browsing
    long−term study
    multifunctional forest management
    natural recruitment
    nature conservation
    silvicultural treatment
    strict protection
    tree competition
    tree diversity
    Opis:
    Since several years already, a massive infestation of bark beetle has taken place in the Białowieża Forest, decimating a local Norway spruce population. In consequence, many open areas appeared, practically deprived of trees and other forest vegetation. The existence of such areas has a very negative impact on multiple values of the Białowieża Forest: natural, social, economical and landscape−aesthetic values. The local forest administration prepared a strategy aimed at active restoration of diverse woodland communities typical for the Białowieża Forest in all places, where bark beetle infestation wiped up the spruce stands. Those plans were criticized by representatives of the environmental organizations who blamed the foresters for transforming the Białowieża Forest into ‘plantation’ and claiming that such measures are inconsistent with the existing forest management and protection plan. The postulate of environmentalists is that the recovery of woodland communities should proceed completely naturally. Taking into account the above mentioned controversies, in this paper we examine the issue of natural regeneration in the Białowieża Forest in detail. In particular, we try to determine to which extent this method of forest reproduction enables re−establishment of compositionally diverse woodland communities, distinguished by a high level of biological diversity and able to provide a wide range of commodities and benefits important for today’s society. Based on an extensive literature review we show that a combination of different (abiotic and biotic) factors, influencing establishment and subsequent growth of seedlings and saplings in the Białowieża Forest has long been strongly unfavorable for many tree species. In this regard, one should particularly emphasize the negative role of large herbivores, especially red deer, which is present in the Białowieża Forest since the end of 19th century, when it became a private hunting ground for Russian tzars. The devastating effect of deer browsing on natural regeneration is a well−documented phenomenon and widely recognized problem in the forestry practice. The fencing of young forest generation against game pressure is an indispensable measure, needed to secure the continuous existence of several tree species (first of all those palatable and vulnerable to browsing). Very strong arguments for an active approach to the described problem delivers also a long−term study on natural forest dynamics conducted since 1936. It shows that under conditions of strict protection the regeneration capacity of the Białowieża tree species is very variable. These differences lead to the compositional simplification and impoverishment of many tree stands, with numerous negative consequences for local biodiversity. We underline that an active management strategy is a basic prerequisite for maintaining a diverse character of the Białowieża stands and their ability to provide all important ecosystem services on a sustainable basis. Such a strategy should include, beside of the phase of establishment, also the subsequent developmental stages of new forest generations. The general goal of such a strategy should be to secure a possibly high diversity of tree composition and to enable the development of tree species representing a full range of life−history strategies and playing different successional roles: from typical pioneer species, through intermediate, to climax species.
    Źródło:
    Sylwan; 2018, 162, 11; 883-896
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiana wielkosci krzywizn u modrzewi roznych pochodzen na powierzchni doswiadczalnej w Rogowie
    Changes in the size of curvature in larch trees from different provenances at the experimental site in Rogow
    Autorzy:
    Szeligowski, H.
    Andrzejczyk, T.
    Szkup, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/45996.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    proweniencje
    modrzew europejski
    Larix decidua
    strzala drzew
    krzywizna
    Źródło:
    Leśne Prace Badawcze; 2010, 71, 1; 75-80
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ ogłowienia i przerzedzenia na wzrost grabu (Carpinus betulus L.) w młodniku dębowym (Quercus petraea (Matt.) Liebl.)
    Influence of decapitating and thinning on growth of hornbeam (Carpinus betulus L.) in the oak (Quercus petraea (Matt.) Liebl.) thicket
    Autorzy:
    Andrzejczyk, T.
    Brzeziecki, B.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/979514.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany mieszane
    drzewostany grabowo-debowe
    mlodniki
    grab pospolity
    Carpinus betulus
    zabiegi pielegnacyjne
    przerzedzanie
    oglawianie
    wzrost roslin
    przyrost wysokosci
    przyrost piersnicy
    interspecific competition
    pre−commercial thinning
    decapitating
    mixed stand
    Opis:
    The aim of this study was to quantify 4−year growth and increment of 11− to 15−year−old, artificially regenerated hornbeam (Carpinus betulus L.) playing the role of the tending (nursery) species in the oak stand of the same age, after the silvicultural treatments aimed at reducing its competition against the oak. The study included three types of experimental treatments: decapitating of all hornbeam trees (OG), schematic reduction of hornbeam density (R50, removal of every second hornbeam in a row) and control (K, without treatment). The trial stand is located in Rogów (51.827023° N, 19.922315° E) and was established in 2004 on a moderately fertile site. The experiment was carried out in the spring 2013 (9 years after planting). Height and breast height diameter (dbh) of trees were measured every two years. During the study period, the height increment of decapitated trees was significantly larger than in R50 and K variants, while the dbh increment of trees in R50 variant was significantly larger than in K and OG variants. The height increment of hornbeam in R50 and OG variant and the dbh increment in R50 variant were positively correlated with height and diameter of trees before the treatment, while the dbh increment after decapitating was negatively correlated with tree dimensions before treatment. The decapitating treatment reduced the competitive ability of hornbeam more effectively than the schematic thinning removing 50% of hornbeam trees. After 4 years in the first case, oaks were on average 1 m higher than hornbeams, and in the second case, there was an opposite situation. In order to improve the effectiveness of the thinning treatment, a selective cutting should be performed (removal of the largest hornbeams), and in order to slow down the regeneration of hornbeams after decapitating, the treatment should be carried out during the top of the growing season.
    Źródło:
    Sylwan; 2019, 163, 03; 179-187
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formy znieksztalcen pedu u debu szypulkowego [Quercus robur L.] w fazie mlodnika
    Autorzy:
    Andrzejczyk, T.
    Mirek, J.
    Zajaczkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/813447.pdf
    Data publikacji:
    1999
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany debowe
    hodowla lasu
    znieksztalcenia roslin
    mlodniki debowe
    Quercus robur
    lesnictwo
    dab szypulkowy
    drzewa lesne
    Źródło:
    Sylwan; 1999, 143, 04; 21-34
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki termiczne powietrza na zrębie zupełnym i gnieździe
    Air temperature on the clear-cut and the gap
    Autorzy:
    Chojnicka-Ożga, L.
    Ożga, W.
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/985725.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    zrab zupelny
    zrab gniazdowy
    warunki termiczne
    temperatura powietrza
    zroznicowanie przestrzenne
    zroznicowanie temperatur
    forest
    felling site
    air temperature
    late frost
    heat waves
    Opis:
    The aim of the study was to determine the spatial variation of air temperature on the clear−cut and gap as well as to compare the distribution of thermal conditions on both areas. The research was carried out in Rogów Forest Experimental Station (51.827023°N, 19.922315°E) on a clear−cut with a width of 60 m and on a gap (of an ellipsoid shape; 40×70 m). The measurements were carried out in two series: spring−summer, in the period when the height of the sun during the day conditioned inflow of direct solar radiation to any surface (May−August 2006), and autumn, when direct radiation was limited by neighboring stands (October−November 2006). Average values of air temperature on the gap in the spring−summer period differed in individual parts by 2.2°C, while on the clear−cut by 1.0°C. In the autumn, thermal diversity on both research plots was similar (0.8°C on average). The thermal diversity within the research plots was particularly marked in the case of extreme air temperature values. Differences between minimum temperature values in the spring−summer period amounted to 1.8°C on the clear−cut, and 1.3°C on the gap, while in the autumn to 1.0°C on both research plots. Higher differentiation occurred in the case of the maximum temperature: the differences in spring−summer equaled 3.1°C on the clear−cut and 8.7°C on the gap, and in the autumn 2.7 and 3.1°C, respectively. In May, three late frost days occurred on the clear−cut, while on the gap the no frost was recorded. All late frost situations occurred during radiation weather characterized by weak wind blowing across the clear−cut. The diurnal course of air temperature in the spring−summer period was dependent on the range of shadow of the position, while in the autumn these trends were similar in each position.
    Źródło:
    Sylwan; 2019, 163, 08; 655-664
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw ciec rebnych na zageszczenie, wzrost i stan zdrowotny odnowien naturalnych sosny w warunkach Nadlesnictwa Tuszyma
    The effect of final cuts on the density, growth and health condition of pine natural regeneration in the territory of the Tuszyma Forest District
    Autorzy:
    Andrzejczyk, T.
    Aleksandrowicz-Trzcinska, M.
    Zybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/46028.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    stopien porazenia
    hodowla lasu
    osutka sosny
    lesnictwo
    zageszczenie roslin
    ciecia rebne
    Pinus sylvestris
    drzewostany sosnowe
    wzrost roslin
    Lophodermium seditiosum
    sosna zwyczajna
    odnowienia naturalne
    siewki
    Źródło:
    Leśne Prace Badawcze; 2009, 70, 1; 5-17
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki wilgotnościowe powietrza na zrębie zupełnym i gnieździe
    Air humidity on the clear-cut and the gap
    Autorzy:
    Chojnacka-Ożga, L.
    Ożga, W.
    Andrzejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/979332.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    clear−cut
    gap
    vapour pressure
    relative humidity
    vapour pressure deficit
    Opis:
    The aim of the study was to determine the spatial variation of vapour pressure (e), relative humidity (f) and vapour pressure deficit (Δ) on the clear−cut and gap as well as to compare the spatial distribution of air humidity conditions on both areas. The research was carried out in Rogów Forest Experimental Station (51.827023°N, 19.922315°E) on a clear−cut with a width of 60 m and on a gap of an ellipsoid shape (40×70 m). The measurements were carried out in two series: spring−summer, i.e. in the period when the height of the sun during the day conditioned inflow of direct solar radiation to any surface (May−August 2006), and autumn, i.e. when direct radiation was limited by neighbouring stands (October−November 2006). We found the modest spatial diversification of vapour pressure that, on average, amounted to 0.4 and 0.2 hPa in the clear−cut and gap, respectively, in spring−summer period as well as 0.3 and 0.7 hPa, respectively, in the autumn. The major impact of the clear−cut and gap location was marked in relative humidity and humidity deficit. Differences in relative humidity on the clear−cut amounted averagely to 3.7 and on the gap 12.7%, whereas the humidity deficit equalled 0.3 and 5.4 hPa, respectively. Particularly large diversification of relativity humidity and vapour pressure deficit was in spring−summer period in the situation of heat waves. In that weather conditions in sun−filled clear−cut and gap parts, the relativity humidity fall to about 17%, whereas vapour pressure deficit increased to about 60 hPa. In the same clear−cut and gap parts the occurrence of dry days was more frequent that in other places. It was noticed that in the positions located in sun−filled clear−cut and gap parts (z4, g3), the diurnal vapour pressure course was very similar to the one observed in the forest, whereas the course of the relativity humidity and vapour pressure deficit was significantly different. That is mainly involved with the extreme thermal conditions in this parts of the studied areas. The least beneficial humidity conditions for plants growth occurred in the north−east parts of clear−cut and gap, that’s why it necessary to take particular note of these locations when undertaking the silvicultural treatments.
    Źródło:
    Sylwan; 2020, 164, 07; 594-603
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wysokość dwunastoletnich odnowień dębu szypułkowego na różnej wielkości gniazdach o wydłużonym kształcie w kierunku wschód-zachód
    Height of the 12-year-old regeneration of pedunculate oak in the cut patches of different size with an elliptical shape in the east-west direction
    Autorzy:
    Drozdowski, S.
    Andrzejczyk, T.
    Buraczyk, W.
    Turkot, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/991740.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    rebnie gniazdowe
    odnowienia lasu
    odnowienia na gniazdach
    gradient wschod-zachod
    wydluzanie osi gniazda
    drzewa lesne
    dab szypulkowy
    wzrost roslin
    wysokosc drzew
    patch cutting
    pedunculate oak
    gap size
    spatial height variability
    Opis:
    The study presents spatial variation in the height of a 12−year−old oak regeneration in the north−south and east−west gradients in the cut patches with a similar width (28 m) but differing in length (33−70 m), with the longer side facing east−west direction. A comparison of the cut patches with an area of 7, 11 and 16 ares showed that oaks in large patches were on average 25% higher than in small patches and the diversity of trees in the WE and NS gradients depended on the size of the patch. In each case, the lowest trees occurred in the zone of strong root competition of shelterwood, whose influence decreased with the enlargement of the cut patches. The results of the study show that the establishment of large (15−20 ares) elliptical or rectangular patches whose area can be expanded by lengthening the axis in the east−west direction is the recommended method of pedunculate oak renewal in forest practice.
    Źródło:
    Sylwan; 2013, 157, 06; 434-441
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wysokość siedmioletnich odnowień dębowych na gniazdach w różnych warunkach siedliskowych
    The height of seven-year-old oaks growing in gaps in different forest habitats
    Autorzy:
    Bolibok, L.
    Andrzejczyk, T.
    Drozdowski, S.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/45960.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    rebnie gniazdowe
    odnowienia lasu
    drzewa lesne
    dab szypulkowy
    Quercus robur
    wysokosc drzew
    warunki siedliskowe
    wielkosc gniazd
    zyznosc siedliska
    Źródło:
    Leśne Prace Badawcze; 2011, 72, 2
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sposób powstawania, struktura i produkcyjność drzewostanów bukowo-modrzewiowych w Polsce
    Polish beech-larch stands: their structure, productivity and processes of generation
    Autorzy:
    Andrzejczyk, T.
    Bolibok, L.
    Drozdowski, S.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/45706.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany mieszane
    drzewostany dwupietrowe
    drzewostany bukowo-modrzewiowe
    zasobnosc drzewostanu
    struktura drzewostanu
    wiek drzew
    buk zwyczajny
    Fagus sylvatica
    odnowienia lasu
    Źródło:
    Leśne Prace Badawcze; 2011, 72, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ osłony bocznej drzewostanu na wzrost dębu bezszypułkowego (Quercus petraea) i grabu pospolitego (Carpinus betulus) w fazie uprawy
    Effect of lateral shelter on a height growth of sessile oak (Quercus petraea) and common hornbeam (Carpinus betulus) in young growth phase
    Autorzy:
    Andrzejczyk, T.
    Dzwonkowski, M.
    Pawłowski, M.
    Działak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/990860.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    uprawy lesne
    dab bezszypulkowy
    Quercus petraea
    grab pospolity
    Carpinus betulus
    wzrost roslin
    przyrost wysokosci
    oslona boczna
    sciana lasu
    oak silviculture
    hornbeam
    height growth
    mixed stands
    mixture form
    Opis:
    We investigated annual height increment of sessile oak and common hornbeam planted on clear−cut in respect to the distance to the adjacent mature Scots pine stand. The study area was divided into 3 zones (I−III) each of 20 m width. The four analyzed treatments were defined on a basis of a mingling form: W1 – a monoculture of oak (control plot), W2 and W3 – two types of row mixture, W4 – single tree mixture. Two years after planting an annual height increment of both tree species was significantly higher in the zone I (adjacent to the mature pine stand from the SW side) than in two other zones. The same significant differences were also found at the other inventories. Although hornbeam was on average higher than oak, a growth inhibition of oak by hornbeam was not significant. The annual height increment of both species was correlated with the precipitation in June and July.
    Źródło:
    Sylwan; 2014, 158, 10; 723-732
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planowanie hodowlane z wykorzystaniem metody BDq w drzewostanach świerkowych na siedliskach bagiennych
    Silvicultural planning in spruce mire forests by the means of the BDq method
    Autorzy:
    Drozdowski, S.
    Andrzejczyk, T.
    Bielak, K.
    Buraczyk, W.
    Gawron, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/990869.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    siedliska lesne
    siedliska bagienne
    drzewostany swierkowe
    swierk pospolity
    Picea abies
    struktura drzewostanu
    planowanie hodowlane
    metoda BDq
    close−to−nature silviculture
    equilibrium model
    norway spruce mire forest
    silvicultural planning
    Opis:
    This paper addresses problems associated with the silvicultural planning in the Norway spruce mire forests (Sphagno girgensohnii−Piceetum Polak. 1962) that are characterized by an uneven−aged structure and a high degree of irregularity at small scale. Based on detailed inventory using 30 permanent circular sample plots in two control units located in the Augustów Forest (NE Poland), the BDq method was employed for determining future silvicultural activities of the current forest management cycle. The equilibrium models are based on diameter distributions and have the following parameters, depending on site conditions: B=28 m²/ha; q−factor=1.32 and D=51 cm in the case of poorer forest site type (S.−P. typicum) and 55 cm more fertile one (S.−P. thelypteridetosum).
    Źródło:
    Sylwan; 2014, 158, 10; 733-742
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ warunków siedliskowych na zróżnicowanie wysokości dębu na gniazdach
    Effect of habitat conditions on the variation of oak height in the gaps
    Autorzy:
    Andrzejczyk, T.
    Bolibok, L.
    Buraczyk, W.
    Drozdowski, S.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/991003.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    rebnie zupelne gniazdowe
    hodowla lasu
    odnowienia lasu
    odnowienia na gniazdach
    drzewa lesne
    dab szypulkowy
    Quercus robur
    wzrost roslin
    warunki siedliska
    siedliska lesne
    bor mieszany swiezy
    las mieszany swiezy
    las swiezy
    pedunculate oak
    clear−cut gap
    plantations
    forest regeneration
    patch cutting system
    Opis:
    The paper presents the study on the height of 10−12−year−old pedunculate oak regeneration in clear−cut gaps in three fertility variants: mezotrophic of poorer productivity (fresh mixed coniferous forest – BMśw), mezotrophic of higher productivity (fresh mixed deciduous forest – LMśw) and eutrophic (fresh deciduous forest – Lśw). BMśw and LMśw were represented by two locations: Gostynin (G) and Parczew (P), while Lśw – by one: Czarna Białostocka (CzB). We analysed the variation of oak height in the patches along the north−south (N−S) and east−west (E−W) gap axes. In each location 3−5 gaps were selected and measurements taken on three transects along the N−S axis located in the western (W), central (C) and eastern (E) part. Significant differences in oak height were found along the N−S axis. Oaks in the BMśw and LMśw habitats in the south−central part, and those in the Lśw habitat in the centre−northern part of the patch were the highest. The height growth of oaks on sandy soils (BMśw, LMśw) was found to be limited by moisture deficit, while on loamy soils (Lśw) – by light deficiency. The differences in oak height along the E−W axis were smaller and less apparent, indicating a tendency towards the reduction of their height growth in the central part of the gap.
    Źródło:
    Sylwan; 2014, 158, 06; 404-413
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość hodowlana buka zwyczajnego (Fagus sylvatica L.) po 20 latach wzrostu na powierzchni proweniencyjnej w Nadleśnictwie Brzeziny
    Silvicultural quality of common beeches (Fagus sylvatica L.) after 20 years of growth on a provenance plot in Brzeziny Forest District
    Autorzy:
    Szeligowski, H.
    Buraczyk, W.
    Drozdowski, S.
    Andrzejczyk, T.
    Stępniarek, M.
    Dzwonkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/980226.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewa lesne
    buk zwyczajny
    Fagus sylvatica
    jakosc hodowlana
    wzrost roslin
    pokroj
    doswiadczenia proweniencyjne
    Nadlesnictwo Brzeziny
    provenance plots
    growth traits of trees
    tree habit
    silvicultural quality
    Opis:
    Paper presents an analysis of phenotypical variation and an evaluation of silvicultural quality of progeny from 27 beech stands around Poland that grow on the provenance plot in the Brzeziny Forest District (51.791997°N, 19.813841°E). The trial commenced in spring 1996, on the basis of 2−year−old saplings with covered root systems. A randomised block method with 3 replications was applied, with subsequent measurements and analyses carried out in 2015, following 20 years of growth. The considered features included height, breast−height diameter, crown habit, trunk curvature and height of branching. Single−factor analysis of variance and Tukey’s HSD test were applied to determine the significance of differences among provenances. The largest mean height was attained by beeches originating from Gdańsk, Szczecinek and Bierzwnik. The least−tall beeches were in turn those whose origins were in Tomaszów, Łagów and Grodzisk. The greatest intra−population variation in height characterised the beeches from Gryfino and Krucz, while the most limited variation was noted for Gdańsk population. The beeches of greatest girth were again those deriving from Gdańsk, Bierzwnik and Szczecinek populations, as well as the one from Kwidzyn 15. The lowest values for diameter at breast height were again noted for the Grodzisk, Tomaszów and Łagów provenances. Marked intra−population variation in this feature characterised trees from the Gryfino, Bieszczady National Park (42), Zdrojów and Krucz provenances. The populations also differered in relation to analysed more−qualitative features. The group of populations prized most in terms of their overall silvicultural quality included Gryfino, Grodzisk, Zdrojów, Bieszczady National Park, Bierzwnik and Szczecinek provenances. In contrast, only low quality was manifested by beeches from Tomaszów, Rymanów, Wejherowo, Młynary, Golub− −Dobrzyń and Kwidzyn provenances. In general, populations originating from the north (especially Pomerania) achieved better growth and a more favourable quality evaluation than those from the south, and sites located near the range limits of the species (fig. 7). The obtained results show that northern Poland boasts the most plastic populations of beech. Equally, it was not possible to establish that populations of local origin were superior in terms of growth to those originating in more far−flung parts of Poland. Furthermore, assessments of different populations in terms of their growth and quality features often proved highly disparate.
    Źródło:
    Sylwan; 2019, 163, 07; 590-600
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura i dynamika wielogeneracyjnych starodrzewów sosnowych występujących w obszarach ochrony ścisłej Kaliszki i Sieraków w Kampinoskim Parku Narodowym. Część 2. Procesy zamierania i dorastania oraz ich wpływ na rozkład grubości drzew
    Structure and dynamics of uneven−aged, Scots pine−dominated, old−growth stands in Kaliszki and Sieraków strict reserves in Kampinos National Park. Part 2. Tree mortality and recruitment processes and their effects on tree diameter distributions
    Autorzy:
    Brzeziecki, B.
    Zajączkowski, J.
    Olszewski, A.
    Bolibok, L.
    Andrzejczyk, T.
    Bielak, K.
    Buraczyk, W.
    Drozdowski, S.
    Gawron, L.
    Jastrzębowski, S.
    Szeligowski, H.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/979128.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    demographic non−equilibrium
    diameter structure
    long−term study
    old−growth forest
    permanent study
    plot
    scots pine
    strict protection
    Opis:
    Two fundamental demographic processes (tree recruitment and mortality) are analyzed for forest stands growing on permanent study plots located in strictly protected Scots pine−dominated, old−growth stands of Kampinos National Park (central Poland). The major implications of the observed demographic trends for the general shape of tree size distributions are determined, as well. During the past ca 30 years, in the stands sampled, there was a pronounced lack of balance between mortality and recruitment processes. Mortality rate was eight times higher than recruitment rate. Eventually, there was a net significant decline in population density, observed for all major tree species, including Scots pine, pedunculate oak, silver and downy birch, and black alder. As mortality processes affected mainly smaller trees, there was also a significant deterioration of the general demographic status of most important tree species. This effect was shown by the change of the overall shape of diameter distributions over the study period: from reverse J−shaped to flat curves running nearly parallel to X−axis. The values of recruitment rates were markedly lower, and the values of mortality rates – significantly higher, than analogous values characterizing comparable forests (e.g., those obtained for the natural stands of Białowieża National Park). Low recruitment rates, as obtained for Kampinos stands, suggest that presently, in the local, Scots pine−dominated, old−growth stands, the general conditions for forest regeneration and for maintaining a long−term demographic stability are unfavorable. Most probably, the regeneration of this type of forest has an episodic, ‘wave−like’ character and corresponds to the ‘catastrophic’ model, according to which the successful regeneration of current dominants (especially Scots pine, silver and downy birch, black alder) must be preceded by a stand−initiating (stand−replacing) disturbance, leading to total or partial, but heavy, destruction of the currently existing stand. At the moment, it would be difficult to predict, however, if and when such a disturbance will affect the stands under investigation. Thus, we predict that in the nearest future at least, the state of overall demographic unbalance will continue or even increase.
    Źródło:
    Sylwan; 2020, 164, 06; 443-453
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura i dynamika wielogeneracyjnych starodrzewów sosnowych występujących w obszarach ochrony ścisłej Kaliszki i Sieraków w Kampinoskim Parku Narodowym. Część 1. Zróżnicowanie gatunkowe, zagęszczenie i pierśnicowe pole przekroju
    Structure and dynamics of uneven−aged Scots pine−dominated old−growth stands in Kaliszki and Sieraków strict protection areas in the Kampinos National Park. Part 1. Species composition, tree density and basal area
    Autorzy:
    Brzeziecki, B.
    Zajączkowski, J.
    Olszewski, A.
    Bolibok, L.
    Andrzejczyk, T.
    Bielak, K.
    Buraczyk, W.
    Drozdowski, S.
    Gawron, L.
    Jastrzębowski, S.
    Szeligowski, H.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/978936.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    forest dynamics
    long−term research
    old−growth forest
    permanent study plot
    strict protection
    tree
    species composition
    Opis:
    The paper describes changes, which took place over the last 30 years in old−growth forest stands occupying two permanent research plots, established in the Kaliszki and Sieraków strict protection areas in the Kampinos National Park (central Poland). Both plots have a form of ecological transects. The Kaliszki plot is 20 m wide and 700 m long (1.40 ha), while the Sieraków plot (total area of 2.56 ha) consists of two parts: main (40×460 m) and side (40×180 m) transect. In the Kaliszki plot, the stand measurements were conducted in 1993, 2007, and 2017, while in the Sieraków plot – in 1989, 1994, 2006, and 2017. For every tree with breast height diameter (DBH) 5 cm, species identity, DBH and spatial coordinates were determined. Starting from the second census, all trees which had died (‘losses’), as well as trees which exceeded the DBH threshold (‘gains’) since the previous record were noted, as well. The major tree species occurring on sample plots are Scots pine (Pinus sylvestris), pedunculate oak (Quercus robur), silver and downy birch (Betula sp.), and black alder (Alnus glutinosa). During the study period, the overall tree density declined by ca. 50%. The diminishing trends occurred for all dominant tree species. In contrast to major, dominant tree species, the demographic status of a group of minor tree species (lime, hornbeam and maple) was much more stable. One may even speak about some expansion in this case. Particularly, hornbeam density increased rapidly in the period 2006−2017 in some areas of the main transect located in the Sieraków plot. The future studies will show if this tendency will be maintained and will include other regions of sample plots. Assuming a lack of significant disturbances, one may expect that the stands growing on research plots will rather slowly change in the nearest future. Most dynamics will have a quantitative and not qualitative character. One may anticipate, for example, a growing role of pedunculate oak at the expense of Scots pine, however, considering that the two species are rather long−living, they will probably for a long time keep their dominant roles in the stand canopies.
    Źródło:
    Sylwan; 2020, 164, 05; 392-403
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance analyses of helical coil heat exchangers. The effect of external coil surface modification on heat exchanger effectiveness
    Autorzy:
    Andrzejczyk, R.
    Muszyński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/240706.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    effectiveness
    heat transfer intensification
    number of transfer unit
    helical coil
    skuteczność
    intensyfikacja wymiany ciepła
    liczba jednostek przesyłowych
    spirala
    Opis:
    The shell and coil heat exchangers are commonly used in heating, ventilation, nuclear industry, process plant, heat recovery and air conditioning systems. This type of recuperators benefits from simple construction, the low value of pressure drops and high heat transfer. In helical coil, centrifugal force is acting on the moving fluid due to the curvature of the tube results in the development. It has been long recognized that the heat transfer in the helical tube is much better than in the straight ones because of the occurrence of secondary flow in planes normal to the main flow nside the helical structure. Helical tubes show good performance in heat transfer enhancement, while the uniform curvature of spiral structure is inconvenient in pipe installation in heat exchangers. Authors have presented their own construction of shell and tube heat exchanger with intensified heat transfer. The purpose of this article is to assess the influence of the surface modification over the performance coefficient and effectiveness. The experiments have been performed for the steady-state heat transfer. Experimental data points were gathered for both laminar and turbulent flow, both for co current- and countercurrent flow arrangement. To find optimal heat transfer intensification on the shell-side authors applied the number of transfer units analysis.
    Źródło:
    Archives of Thermodynamics; 2016, 37, 4; 137-159
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The performance of H2O, R134a, SES36, ethanol, and HFE7100 two-phase closed thermosyphons for varying operating parameters and geometry
    Autorzy:
    Andrzejczyk, R.
    Muszyński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/240401.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    two-phase closed thermosiphon
    heat pipe
    energy efficiency
    NTU
    number of heat transfer units
    heat recovery
    zamknięty termosyfon dwufazowy
    rura cieplna
    efektywność energetyczna
    liczba jednostek przepływu ciepła
    odzysk ciepła
    Opis:
    In this study, the influences of different parameters at performance two-phase closed thermosiphon (TPCT) was presented. It has been confirmed that the working fluid, as well as operating parameters and fill ratio, are very important factors in the performance of TPCT. The article shows characteristics of gravitational tube geometries, as well as the technical characteristic of the most important system components, i.e., the evaporator/condenser. The experiment’s plan and the results of it for the two-phase thermosiphon for both evaluated geometries with varying thermal and fluid flow parameters are presented. Experiments were performed for the most perspective working fluids, namely: water, R134a, SES36, ethanol and HFE7100. Obtained research proves the possibility to use TPCT for heat recovery from the industrial waste water.
    Źródło:
    Archives of Thermodynamics; 2017, 38, 3; 3-21
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie korelacji opisujących wymianę ciepła w obszarze uderzających mikrostrug do projektowania kompaktowych wymienników ciepła: cz. 1. Budowa modelowego wymiennika ciepła i jego charakterystyka
    Applicability of correlations of heat transfer in arrays of microjets to design compact heat exchangers: part 1. Model heat exchanger design and its characteristics
    Autorzy:
    Muszyński, T.
    Andrzejczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/151400.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    mikrostrugi
    wymiennik ciepła
    intensyfikacja wymiany ciepła
    microjets
    heat exchanger
    heat transfer intensification
    Opis:
    W artykule przedstawiono konstrukcję prototypowego, modułowego mikrostrugowego wymiennika ciepła. Przeprowadzone badania cieplno przepływowe w układzie woda-woda, umożliwiają określenie efektywności wymiany ciepła, charakterystyk cieplno przepływowych, oraz wielkości współczynnika przejmowania ciepła. Eksperymenty w dalszej części publikacji posłużą do weryfikacji stosowalności istniejących korelacji opisujących wymianę ciepła w obszarze uderzającej mikrostrugi.
    The article presents experimental studies on a compact heat exchanger with heat transfer intensification by means of impinging microjets. The pursuit to provide high performance of heat exchangers is a response to the demand both in economics and in the universal tendency to miniaturization of industrial equipment. This paper presents the design of a prototype, modular microjet heat exchanger. The modular design of the heat exchanger allows to change its geometrical dimensions, as well as changing the heat exchange membrane material. Schematics, view of test section and design of the heat exchanger are shown in Figures 1 to 4. The study of heat transfer in water-water flow, allows to determine the heat transfer efficiency, the characteristics of heat transfer, and the heat transfer coefficient values. Data were collected for the pressure drops in heat exchanger not exceeding 15 kPa, i.e. such as in conventional heat exchangers. Hydraulic characteristics of a model heat exchanger are shown in Figures 5 and 6. Additionally for the two experimental series, comparison of the performance of tested heat exchanger with standard pipe in the pipe heat exchanger has been made, as shown in Figure 9. Conducted experimental research, in the following part of publication will be used to verify the applicability of the existing correlations of heat transfer in microjet impingement area.
    Źródło:
    Pomiary Automatyka Kontrola; 2014, R. 60, nr 11, 11; 1021-1024
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations on mixture preparation for two phase adiabatic pressure drop of R134a flowing in 5 mm diameter channel
    Autorzy:
    Muszyński, T.
    Andrzejczyk, R.
    Dorao, C. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/240440.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adiabatic flow
    frictional pressure drop
    two-phase flow
    flow pattern map
    R134a
    przepływ adiabatyczny
    tarciowy spadek ciśnienia
    przepływ dwufazowy
    mapy przepływu
    Opis:
    The article presents detailed two-phase adiabatic pressure drops data for refrigerant R134a. Study cases have been set for a mass flux varying from 200 to 400 kg/m2s, at the saturation temperature of 19.4°C. Obtained experimental data was compared with the available correlations from the literature for the frictional pressure drop during adiabatic flow. Influence of mixture preparation on pressure drop was investigated, for varying inlet subcooling temperature in the heated section. The flow patterns have also been obtained by means of a high-speed camera placed in the visualization section and compared with literature observations.
    Źródło:
    Archives of Thermodynamics; 2017, 38, 3; 101-118
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-44 z 44

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