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    Wyświetlanie 1-9 z 9
    Tytuł:
    Wpływ mechanicznego przygotowania gleby na zrębie na jej cechy
    Effect of mechanical site preparation on features of the soil in a clear-cut area
    Autorzy:
    Aleksandrowicz-Trzcińska, M.
    Drozdowski, S.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/986611.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    zreby
    przygotowanie gleby
    zabiegi mechaniczne
    maszyny lesne
    plug LPZ
    plug aktywny jednotalerzowy
    frez lesny
    gleby lesne
    wlasciwosci fizyczne
    wlasciwosci chemiczne
    forest plough
    active plough
    forest mill
    soil scarification
    clear−cut
    Opis:
    In most cases, mechanical site preparation (MSP) is a precondition if high−quality (natural or artificial) regeneration of forests is to be achieved. However, the measures involved here may differ in terms of the level of intervention of the soil environment, at both the surface and deeper down. The choice of MSP methods should be based on climatic conditions, site type and the species whose renewal is sought, while the effect should improve conditions for the emergence and growth of the young generation of trees, with the influence on the soil environment being limited as far as possible. The research sought to compare physical and chemical features of the soils of the microhabitats created in clear−cut areas as a result of MSP using either an LPz double mould−board forest plough (furrow and ridge), an active plough (furrow and ridge) and a forest mill (belt and beyond the belt) as compared with unscarified soil. Investigated physical features included grain size (content of sand, silt and clay), bulk density and actual moisture, while the chemical ones: pHH2O and pHKCl, exchangeable acidity, total content of N and C and the C/N ratio, P2O5 content and base cations Mg2+, Ca2+, K+ and Na+. The most invasive MSP method for the soil environment is the active plough, which leaves the ridge exposed to processes of the decomposition of organic matter (and the highest content of N, C, Mg2+, Ca2+ and K+). Equally, this method may pose the greatest threat of mineral components of the soil being leached, with impoverishment of the habitat ensuing. The forest mill in turn offers the least invasive MSP. Most of the physical and chemical features of soil (other than exchangeable acidity and pHH2O and pHKCl) both in the belt areas and beyond them differed little from the those characterising non−scarified soil. Also the analysed features determined for the furrows ploughed by the active or LPz ploughs or the belt prepared using the forest mill did not differ significantly.
    Źródło:
    Sylwan; 2018, 162, 08; 648-657
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ rodzaju podłoża, sterowanej mikoryzacji i aplikacji fungicydów w szkółce na wzrost dębu szypułkowego w uprawie
    Effect of the substrate type, controlled mycorrhization and application of fungicides in the nursery on the growth of pedunculate oak in the plantation
    Autorzy:
    Aleksandrowicz-Trzcińska, M.
    Żybura, H.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/992254.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    szkolki lesne
    produkcja sadzonek
    podloza uprawowe
    mikoryzowanie sadzonek
    ochrona roslin
    fungicydy
    Bayleton 25 WP
    Falcon 460 EC
    Nimrod 250 EC
    Siarkol Extra 80 WP
    sadzonki
    dab szypulkowy
    Quercus robur
    uprawy lesne
    wzrost roslin
    fungicides
    quercus robur
    mycorrhization
    plantation
    seedling growth
    powdery mildew
    Opis:
    The effect of the controlled mycorrhization with the fungus Hebeloma crustuliniforme, the application of fungicides (Bayleton 25 WP, Falcon 450 EC, Nimrod 250 EC and Siarkol Extra 80 WP) in the nursery and the use of two types of substrate (a mixture of sterilized Estonian peat with vermiculite and unsterilized Polish peat with perlite) on the growth, level of infestation by powdery mildew and form (single, multi−stem) of oak trees in the first four years after planting was analysed. The type of the substrate and controlled mycorrhization did not affect the growth of young trees. Oaks treated with Nimrod in the nursery were the tallest after outplanting, but grew slower compared to trees in other variants. The oaks protected with the triazole fungicides (Falcon and Bayleton) in the nursery showed higher level of infestation by powdery mildew in the plantation.
    Źródło:
    Sylwan; 2013, 157, 03; 187-196
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu przygotowania gleby na cechy odnowienia naturalnego sosny zwyczajnej (Pinus sylvestris L.) w Nadleśnictwie Spychowo
    Effect of mechanical site preparation methods on characteristics of the natural regeneration of Scots pine (Pinus sylvestris L.) in Spychowo Forest District
    Autorzy:
    Aleksandrowicz-Trzcińska, M.
    Drozdowski, S.
    Ligocki, M.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/987039.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    Nadlesnictwo Spychowo
    odnowienia naturalne
    przygotowanie gleby
    sosna zwyczajna
    Pinus sylvestris
    siewki
    zageszczenie roslin
    przezywalnosc
    wzrost roslin
    soil scarification
    self−sowing
    seedling density
    seedling growth
    clear−cut
    Opis:
    Mechanical site preparation is recommended to create optimum conditions for seed germination and seedling growth in a clear−cut area. Lack of soil scarification or less−intense methods may be more suitable from an environmental point of view, but can result in a failure to obtain natural regeneration. This study compared the effects of three mechanical site preparation methods (SPM) characterized by different levels of soil scarification (i.e. double mould−board forest plough (LPz), active plough (PA) or forest mill (FL)), as well as a control variant without mechanical site preparation, on height, density, spatial distribution and survival among naturally regenerating Scots pines (Pinus sylvestris L.) in the first 2 years of growth in a clear−cut area of NE Poland. The experiment was based around a four−block randomized block design involving the four variants. Seedling height was measured at the end of the first and second growing seasons, with measurements performed on 8 meter−wide transects extending across the entire width of the cleat−cut. We found no effect of SPM on seedling height, though the density of seedlings regenerating naturally was found to be dependent. After two years, the highest density was achieved in the PA variant (8.1 seedlings/m2) and the FL variant (7.0 seedlings/m2). A significantly lower density characterized the LPz variant (5.1 seedlings/m2) and the lowest of all the variant without soil scarification (3.2 seedlings/m2). The most homogeneous natural regeneration was achieved following the use of PA (2.6% of 1 m2 plots without seedlings after two growing seasons), while the least homogeneous was the variant without soil scarification (22.4% of 1 m2 plots). Survival of pines after the second growing seasons was quite high (over 80%), and did not differ significantly depending on the SPM. Our research therefore confirmed that, in the absence of mechanical site preparation, natural regeneration of sufficient density and homogeneity cannot be obtained. The best natural regeneration was obtained on sites prepared with PA, and FL scarification being only slightly less favorable. The low density and uneven distribution of seedlings on the soil prepared with LPz was a surprising result. The probable reason for this lay in the high precipitation in the first growing season. On one hand, this provided very good moisture conditions for seed germination and seedling growth on a substrate with high porosity in the PA and FL variants, but on the other the high bulk density of mineral soil in the LPz variant led to oxygen deficit.
    Źródło:
    Sylwan; 2017, 161, 03; 196-207
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu postępowania z pozostałościami zrębowymi i przygotowania gleby na zrębie na wzrost sosny zwyczajnej (Pinus sylvestris L.) w 6-letniej uprawie
    Effects of logging slash management methods and soil preparation methods on the clear-cut on growth of 6-year-old Scots pine (Pinus sylvestris L.) stand
    Autorzy:
    Żybura, H.
    Aleksandrowicz-Trzcińska, M.
    Drozdowski, S.
    Wołczyk, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/989272.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    zreby
    pozostalosci zrebowe
    postepowanie z pozostalosciami zrebowymi
    przygotowanie gleby
    odnowienia lasu
    odnowienia przez sadzenie
    sosna zwyczajna
    Pinus sylvestris
    uprawy sosnowe
    wzrost roslin
    przezywalnosc
    zageszczenie drzew
    logging slash
    planting
    scots pine
    soil preparation
    Opis:
    Different methods of logging slash management (LSM) and methods of soil preparation (MSP) can create different conditions for the growth of forest trees. This occurs through variation in soil aeration, tree nutrition or microbial conditions. These factors are modified by climate, soil fertility, treats from insects or fungal pathogens and renewed species. The aim of this study was to compare effects of three LSM methods: 1) crushing and mixing with the soil by Mery Crusher, 2) chopping and leaving on the soil surface, and 3) removal from the clear−cut, and three MSP: 1) double−mouldboard forest plough LPz−75, 2) active plough U−162, and 3) forest mill FAO−FAR FV 4088 on biometric parameters, density and survival of six−years old Scots pine seedlings. Field research was conducted in Narol Forest District (south−eastern Poland). The soil in the study area was classified as brown podzolic, formed on loose sands with typical mor humus.The experiment was established by planting 10 000 one−year−old pine seedlings per hectare, after clear cut and followed by a two−factor block design consisting of nine variants distinguished on the basis of LSM and MSP randomly assigned to each of the three blocks. Tree height and root collar diameter were measured three times, at the end of 1st, 3rd and 6th growing season. The results showed no statistically significant differences in the size of the analyzed parameters of planted seedlings. Seedlings in the variant with site preparation by crusher and forest mill were slightly higher and thicker. This indicates the better trophic conditions in that variant. LSM did not affect either seedlings density or their survival. A slightly higher survival rate and tree density occurred in variants with crusher regardless of soil preparation method. It follows that, all presented experimental variants give similar results. Therefore, selection of the most appropriate methods of site and soil preparation should primarily respect ecological and economic indicators, and such local factors as microclimate, mainly precipitation, site fertility and threats from pests and fungal diseases.
    Źródło:
    Sylwan; 2016, 160, 04; 267-276
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ mykoryzacji i chitozanu na wzrost sosny zwyczajnej (Pinus sylvestris L.) w szkółce i na uprawie
    Effect of mycorrhization and chitosan on the growth of Scots pine (Pinus sylvestris L.) in nursery and plantation
    Autorzy:
    Aleksandrowicz-Trzcińska, M.
    Hamera-Dzierżanowska, A.
    Żybura, H.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/994290.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    szkolkarstwo lesne
    produkcja szkolkarska
    Biochikol 020 PC
    mikoryzowanie sadzonek
    grzyby mikoryzowe
    Hebeloma crustuliniforme
    material szkolkarski
    sadzonki
    sosna zwyczajna
    Pinus sylvestris
    wzrost roslin
    szkolki lesne
    uprawy lesne
    biochikol 020 pc
    chitosan
    ectomycorrhiza
    hebeloma crustuliniforme
    pinus sylvestris
    Opis:
    The study evaluated the effect of inoculation with Hebeloma crustuliniforme and application of Biochikol 020 PC to the soil in three doses (single, double and triple) on the growth of Scots pine in the nursery and plantation. Both treatments stimulated the growth of seedlings. The effect of Biochikol was found only in the nursery irrespective of the used doses of the preparation. The effect of mycorrhization on pine growth was stronger compared to the application of Biochikol both in the nursery and plantation.
    Źródło:
    Sylwan; 2013, 157, 12; 899-908
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planowanie hodowlane w drzewostanach jodłowych o złożonej strukturze z wykorzystaniem metody BDq w Nadleśnictwie Zagnańsk
    Silvicultural planning in complex structures of silver fir by means of the BDq method in Zagnańsk Forest District
    Autorzy:
    Drozdowski, S.
    Bielak, K.
    Buraczyk, W.
    Gawron, L.
    Jaros, R.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/990985.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany jodlowe
    jodla pospolita
    Abies alba
    planowanie hodowlane
    struktura drzewostanu
    ksztaltowanie struktury
    metoda BDq
    close−to−nature silviculture
    complex stand structure
    multifunctional forestry
    silver fir
    silvicultural planning
    Opis:
    The paper deals with problems concerning silvicultural planning in silver fir stands in Zagnańsk Forest District (central Poland) that are characterized by complex structure. Based on a detailed inventory using 98 permanent circular sample plots in four control units the BDq method was employed for determining the future silvicultural activities of the current forest management cycle. The equilibrium model is based on diameter distributions and has the following parameters: B=35 m²/ha; D=63 cm and q−factor=1.28.
    Źródło:
    Sylwan; 2014, 158, 09; 651-660
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnia dynamika starodrzewów w zagospodarowanej części Puszczy Białowieskiej: gatunki ekspansywne i ustępujące
    Long-term dynamics of old-growth stands in the managed part of the Bialowieza Forest: increasing and declining tree species
    Autorzy:
    Drozdowski, S.
    Brzeziecki, B.
    Żybura, H.
    Żybura, B.
    Gawron, L.
    Buraczyk, W.
    Zajączkowski, J.
    Bolibok, L.
    Szeligowski, H.
    Bielak, K.
    Widawska, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008501.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    starodrzew
    dynamika drzewostanu
    drzewa lesne
    swierk
    grab
    jesion
    olsza
    dab
    lipa
    brzoza
    klon
    sosna
    wiaz
    zageszczenie drzew
    piersnicowe pole przekroju
    piersnice drzew
    gatunki ekspansywne
    gatunki ustepujace
    stale powierzchnie obserwacyjne
    badania dlugoterminowe
    old−growth forest
    permanent plot
    long−term trend
    population density
    population dynamics
    tree species
    Opis:
    In the paper, an assessment of tree population dynamics in the old−growth stands of the managed part of the Białowieża Forest is presented. Data from five permanent sample plots with a total size of 9.3 ha and six inventories that cover the period 1949−2006, were used. Depending on the dynamic status, determined on the basis of changes in a number of individuals per hectare, basal area and quadratic mean diameter, three major groups of tree species were distinguished: 1) an increasing group, containing only hornbeam and lime; 2) a stable group, involving alder and spruce and 3) a declining group consisting of oak, ash, maple, pine, birch, elm and aspen.
    Źródło:
    Sylwan; 2012, 156, 09; 663-671
    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
      Wyświetlanie 1-9 z 9

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