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    Wyświetlanie 1-5 z 5
    Tytuł:
    Growth of Scots pine (Pinus sylvestris L.) on forest and former agricultural lands in Krynki Forest District
    Autorzy:
    Zakrzewski, J.
    Leosz, K.
    Jedrzejuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/38651.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    plant growth
    height growth
    radial growth
    Scotch pine
    Pinus sylvestris
    needle parameter
    forest
    agricultural land
    Krynki Forest District
    Opis:
    The paper shows differences in morphological and anatomical features of the Scots pine (Pinus sylvestris L.) growing on former agricultural and forest lands. It was found that at the same age and in the same climatic conditions Scots pines from former agricultural land had larger stem dimensions and needle sizes as compared with the trees growing on forest land. These results lead to an interesting conclusion connected with future afforestation and reforestiation in the Krynki Forest District.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 2
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation in growth and survival among European provenances of Pinus sylvestris in a 30-year-old experiment
    Autorzy:
    Barzdajn, W.
    Kowalkowski, W.
    Chmura, D.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41160.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant growth
    survival
    provenance transfer
    provenance trial
    forest tree
    Scotch pine
    Pinus sylvestris
    variation
    long-term experiment
    productivity
    Opis:
    Provenance trials with forest trees provide valuable information about growth and adaptability of populations often transferred over large geographical and climatic distances. In this study we evaluated growth and survival of 19 Scots pine (Pinus sylvestris L.) populations representing most of the natural range of the species in Europe, growing in a 30-year-old provenance trial in the northeastern Poland. We used cluster analysis to investigate differentiation among those populations in growth and survival. We also used published data on needle morphology and allozyme and DNA marker variation for those same populations to compare groupings of populations based on growth and needle traits and markers. We found significant variation among tested populations in all investigated traits – the largest variation was found for stand volume which integrates information on growth and survival. Variation in growth traits was related to the latitude of population origin with populations from the latitudinal band between 49° N and 54° N showing the best performance. Populations originating from both north and south off of that region showed lower productivity, which for southern provenances resulted from their particularly low survival, reflecting the lack of adaptation to the environment of the research site. Grouping of populations based on growth traits revealed three clusters corresponding to the three latitudinal regions – northern, central and southern. Needle morphological traits were not appropriate as markers of productivity. Clustering of populations based on needle morphology, and especially based on biochemical and molecular markers, did not correspond to the grouping based on growth traits.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    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:
    Wpływ rzeźby terenu na bonitację i cechy wzrostowe drzewostanów sosnowych na wydmach Kotliny Toruńskiej
    Impact of land relief on site index and growth parameters of Scots pine stands on inland dunes in the Torun Basin
    Autorzy:
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989617.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kotlina Torunska
    rzezba terenu
    ekspozycja terenu
    drzewostany sosnowe
    sosna zwyczajna
    Pinus sylvestris
    wzrost roslin
    wysokosc drzew
    piersnice drzew
    smuklosc drzew
    bonitacja drzewostanow
    topography
    pinus sylvestris
    slope aspect
    tree growth
    forest site
    soil
    inland dunes
    Opis:
    The aim of the study was to determine the impact of land relief on site index and growth parameters (height, diameter, slenderness) of Scots pine (Pinus sylvestris) stands on inland dunes in the Toruń Basin (N Poland). The study was conducted on 150 plots situated on north− and south−facing dune slopes (54 pairs of twin plots) as well as in intra−dune depressions (42 plots). Height and diameter of ten the thickest pines per 0.1 hectare was measured, and next site index as a potential height of a stand at the age of 100 years was calculated. As the results of the used equation, site index was strongly (R²=0.58) negatively biased to age, so the bias was removed using an elaborated regression model. For stands older than ca. 20 years, the clear higher site index values as well as higher heights and diameters were found for intra−dune depressions than for slopes of the two studied aspects. This was explained by the occurrence of much more fertile and moister soils in depressions. The only age class for which the advantage of site index and growth parameters was not stated for depressions was the youngest class (≤20 years old). This was likely caused by the competitive impact on young pines of Calamagrostis epigejos which prefers intra−dune depressions on inland dunes and forms in forest floor usually dense cover in this position. Impact of contrasting slope aspect was clearly related in the study to age of a stand. For the youngest studied age class both site index values as well as heights and diameters were lower on north− than on south−facing slopes. This was explained by the effect of weeds which form more dense cover on slopes of this aspect than on sunny slopes. For older stands; however higher site index values as well as heights and diameters were revealed for north−facing slopes, due to pines likely took advantage of higher moisture of soils occurring in this place. With reference to slenderness, regardless stand age the parameter was regularly the highest for north− than both for south−facing slopes and depressions. Because of the revealed distinct higher productivity of intra−dune depressions in normally dry and poor in nutrients dune landscape, it could be reasonable to use the depressions to introduce admixtures of broadleaved tree species into pine monocultures on inland dunes.
    Źródło:
    Sylwan; 2016, 160, 08; 647-655
    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 1-5 z 5

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