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    Wyświetlanie 1-7 z 7
    Tytuł:
    Wpływ przygotowania gleby po pożarze lasu na przeżywalność i wzrost wybranych gatunków drzew
    The influence of the soil preparation after the forest fire on the survival and growth of the selected tree species
    Autorzy:
    Ceitel, J.
    Barzdajn, W.
    Zientarski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026442.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wzrost roslin
    przezywalnosc
    odnowienia lasu
    tereny popozarowe
    przygotowanie gleby
    pozary lasow
    lesnictwo
    drzewa lesne
    forest fire
    artificial regeneration
    soil preparation
    survival
    growth
    Opis:
    This paper refers to the investigation of the influence of the soil preparation methods and selection of the forest tree species for the forest regeneration on the surface after the forest fire and in case of the poor coniferous forest site types. Results come from the experiment established in 1994 in Notecka Forest according to the split−plots method. Five soil preparation methods were tested (furrows, furrows with subsoiler, subsoiler, full shallow ploughing and control) and six forest tree species (Scots pine, European larch, gray alder, silver birch, pedunculate oak, red oak). On the base of the analysis of variance the height growth and survival of the tested species during 6 year period were evaluated.
    Źródło:
    Sylwan; 2003, 147, 06; 3-13
    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:
    Porównanie odnowień sosny zwyczajnej powstałych z siewu i sadzenia w różnych terminach
    Comparing Scots pine regeneration established by sowing and planting at various times of year
    Autorzy:
    Barzdajn, W.
    Kowalkowski, W.
    Tomczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1290847.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    odnowienia lasu
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    odnowienia z siewu
    odnowienia przez sadzenie
    wzrost roslin
    zageszczenie roslin
    methods of forest regeneration
    pine growth
    density
    Opis:
    The aim of this study was to evaluate the practical feasibility of two forest regeneration methods using Scots pine Pinus sylvestris L. To this end, comparative experiments were established in the Złotoryja and Legnica Forest Districts. The site in Złotoryja had been clear cut, while the experimental plot in Legnica was established at a location damaged by wind in 2009 and cleared from wind throws and wind-broken trees before the experiment. Four different dates for sowing and two for planting were chosen in order to investigate the potential forest regeneration with respect to time. Both experiments were established according to the same design: a complete random block design with five replication blocks. To each plot we applied approximately 53 g (1.2 kg/ha) of seeds and planted 230 seedlings (10 200 seedlings/ha). In 2017, the height of the pine trees was recorded and their increment in height was measured in 2016 as well as 2017. A preliminary analysis of results was conducted using ANOVA for multiple experiments in order to identify significant differences and to then combine variables to form homogeneous groups to which the Duncan multiple range test could be applied. For growth traits, the ANOVA showed significant differences between experimental sights as well as a significant interaction of factors with the experimental site. In terms of planting, April was the most advantageous resulting in the greatest tree height in both forest districts, while in the Legnica Forest District the saplings planted in April also showed the greatest annual increments. Among the sowing dates, the most advantageous was the winter sowing, while the April sowing date produced the least desirable results. In conclusion, both sowing and planting are effective methods to establish pine cultures in coniferous forest. Furthermore, both methods may be performed at the currently recommended spring date, but they may also be postponed to summer and winter dates provided favorable weather conditions prevail.
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model wzrostu modrzewia europejskiego (Larix decidua Mill.)
    Growth model for European larch [Larix decidua Mill.]
    Autorzy:
    Bruchwald, A.
    Zasada, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009318.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    dendrometria
    drzewa lesne
    modrzew europejski
    Larix decidua
    modele wzrostu
    modele stochastyczne
    drzewostany modrzewiowe
    struktura drzewostanu
    produkcyjnosc lasu
    growth and yield model
    european larch
    forest productivity
    stand structure
    Opis:
    The paper discusses the functioning scheme and components of the stochastic growth model for European larch. The model was presented in the form suitable for processing the periodic forest inventory data (diameter and height of trees measured on fixed sample plots and average stand age). The growth model for larch consists of four main algorithms: introductory, thinning, mortality and incremental. First, the introductory algorithm is run to determine stand characteristics at certain age. Next, the thinning algorithm linked with the mortality procedure is activated. In the next step, incremental algorithm (also coupled with mortality program) is turned on. Thinning and incremental programs are run alternately until the end of prognosis period is reached. One of the most important characteristics of forest stand structure is tree stocking utilized directly by the thinning algorithm. The presented model is suitable for prognosis of European larch stands with any age, site index, stocking and various results of measured diameters and heights. It requires verification based on independent empirical data, preferably from permanent research plots.
    Źródło:
    Sylwan; 2010, 154, 09; 615-624
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Związek wysokości z wybranymi cechami korony czteroletniej brzozy brodawkowatej (Betula pendula Roth)
    The relationship between height and crown characteristics of four-year-old common birch (Betula pendula Roth)
    Autorzy:
    Klepacki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292448.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    brzoza brodawkowata
    Betula pendula
    wysokosc drzew
    korony drzew
    szerokosc korony
    dlugosc korony
    przestrzen wzrostu
    korelacja cech
    tree height
    crown width
    crown length
    growth space
    common birch
    forest culture
    Opis:
    This paper presents the results of an analysis on characteristics of birch crowns (Betula pendula Roth) in relation to measures of the growth space occupied by a single tree at a young age. It also presents the relationships between the seedling height and certain crown characteristics. The study focused on four-year-old common birches growing in four different areas in the Elk Forest District in either fresh mixed coniferous or broadleaved forest. The measurements conducted on the chosen trees were used to calculate their crown characteristics such as crown diameter, length, height to the crown base, relative length and spread. They were also used to determine the growth characteristics of a single tree’s growth space, such as the crown area projected onto the ground, single tree space and the percentage use of unit area. Furthermore, fresh and dry leaf mass was determined. The birches growing in the fresh mixed coniferous forest reached an average height of 1.30 m, whereas in the fresh mixed broadleaved forest, the height of the trees was lower and amounted to 0.67 m. 95% of the trees had crown diameters of 0.57 m to 0.74 m in the fresh mixed coniferous forest, but only 0.19 m to 0.25 m in the fresh mixed broadleaved forest. The average lengths of the crowns in the fresh mixed coniferous and broadleaved forests amounted to 0.97 m and 0.37 m respectively. The author shows that there is a statistically significant correlation between the seedling height and the other examined characteristics. The best correlation was found between the height and the length of the crown (r=0.9858) for birches growing in the fresh mixed coniferous forest and between the height and single tree space (r=0.8468) for birches growing in the fresh mixed broadleaved forest.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 2
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Smukłość modrzewia europejskiego (Larix decidua Mill.) i jej związki z innymi cechami biometrycznymi
    Slenderness of European larch (Larix decidua Mill.) and its relationships to other biometric parameters
    Autorzy:
    Kaźmierczak, K.
    Nawrot, M.
    Pazdrowski, W.
    Jędraszak, A.
    Najgrakowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/994964.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    dendrometria
    drzewa lesne
    siedliska lesne
    modrzew europejski
    Larix decidua
    smuklosc drzew
    wiek drzew
    piersnice drzew
    wysokosc drzew
    powierzchnia rzutu korony
    srednica korony
    dlugosc korony
    korelacja cech
    larch
    slenderness
    age
    forest habitat type
    tree growth area
    crown projection area
    Opis:
    The study presents the relationships between larch slenderness and age, breast height diameter, height, crown width, crown projection area, crown length and habitat type. The study comprised larch trees in a dominant stand of different age classes growing in fresh mixed coniferous (BMśw), fresh mixed deciduous (LMśw) and fresh deciduous (Lśw) forest habitats. The slenderness of each larch was calculated as the ratio of tree height to breast height diameter. The crown projection area was calculated as a circle with a radius equal to the average radius of the crown. The average crown radius was established after its projection in the four main geographical directions. The crown length was calculated as the difference between the height of a tree and the height of crown location. Also an attempt was made to describe tree slenderness using multiple regression equations.
    Źródło:
    Sylwan; 2012, 156, 02; 83-88
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ potencjalnych zmian klimatycznych na zdolność konkurencyjną głównych gatunków drzew w Polsce
    Impact of potential climate changes on competitive ability of main forest tree species in Poland
    Autorzy:
    Zajączkowski, J.
    Brzeziecki, B.
    Perzanowski, K.
    Kozak, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/991514.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zmiany klimatyczne
    oddzialywanie na rosliny
    drzewa lesne
    gatunki lasotworcze
    jodla pospolita
    Abies alba
    olsza czarna
    Alnus glutinosa
    brzoza brodawkowata
    Betula pendula
    buk zwyczajny
    Fagus sylvatica
    jesion wyniosly
    Fraxinus excelsior
    swierk pospolity
    Picea abies
    sosna zwyczajna
    Pinus sylvestris
    dab szypulkowy
    Quercus robur
    konkurencyjnosc
    climate change
    forest gap model
    growth multipliers
    tree competition
    Opis:
    An influence of environmental changes upon forest tree species competition was studied for suggested scenario of environmental changes (3−4°C increase of monthly temperatures), 8 main tree species and 6 natural regions. For a synthetic assessment of the reaction of various species for thermal and higric parameters of the climate, the growth multipliers DDGF and SMGF were used. The main environmental factor influencing future growth of tree species in Poland will be water shortage due to increased evapotranspiration. Regional decrease of water sensitive species importance, eg. alder, spruce and birch, accompanied by country−scale expansion of highly competitive, late−successional species, eg. beech and hornbeam is expected.
    Źródło:
    Sylwan; 2013, 157, 04; 253-261
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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