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    Wyświetlanie 1-7 z 7
    Tytuł:
    Zagrożenie drzewostanów dębowych przez Cryphonectria parasitica
    Threat to the oak stands caused by Cryphonectria parasitica
    Autorzy:
    Bieniek, P.
    Oszako, T.
    Pusz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/979289.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    cryphonectria parasitica
    oak stands
    identification
    detection
    pathogen control
    Opis:
    Cryphonectria parasitica is a pathogen that causes chestnut blight – a disease that has decimated chestnut trees Castanea dentata in North America and C. sativa in Europe. C. parasitica also infects other tree species, including oaks. Although the disease on oaks progresses and develops in a milder way, it can pose a threat to them. The main purpose of the work is to investigate the risk of C. parasitica occurring in oak stands. The work is based on a review of the available literature taking into account an analysis of pathogen detection and identification methods, current distribution of disease in Europe, distribution of potential host plants, favourable climatic conditions, and ways of spreading (pathways).
    Źródło:
    Sylwan; 2020, 164, 07; 576-582
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
    Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
    Autorzy:
    Kuzmiński, R.
    Szewczyk, W.
    Korczyński, I.
    Łakomy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311485.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    tereny pokleskowe
    tereny popowodziowe
    drzewostany debowe
    drzewa lesne
    dab
    Quercus
    defoliacja
    liscie
    uszkodzenia lisci
    szkodniki roslin
    owady
    Nadlesnictwo Wolow
    flood
    defoliation
    Wołów Forest Division
    oak die-back
    pest insects
    oak stands
    Opis:
    This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 297-303
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Poziom chlorofilu a i b w liściach krzewów podszytowych w grabowo-dębowych lasach lasostepu Ukrainy Zachodniej
    The content of chlorophyll a and chlorophyll b in leaves of undergrowth species in hornbeam-oak forest stands of the forest-steppe zone in Western Ukraine
    Autorzy:
    Zaika, V.
    Bondarenko, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292298.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany grabowo-debowe
    podszyt
    krzewy
    liscie
    chlorofil a
    chlorofil b
    poziom chlorofilu
    lasostep
    Ukraina Zachodnia
    shrubs
    plastid pigments
    chlorophyll a
    chlorophyll b
    hornbeam-oak forest stands
    forest-steppe zone of western
    Ukraine
    Opis:
    In this study, the biosynthesis of the plastid pigments chlorophyll a and b was examined for the most common shrubs in hornbeam-oak forest stands of the Western forest-steppe zone of Ukraine. The characteristics of the pigments’ biosynthesis were determined in terms of plant species, vegetation period and growth conditions (under canopy cover and out in the open). The gathered data on the changes of the pigment complex with respect to the examined variables confirms the sensitivity of plastid pigment biosynthesis to environmental factors.
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie dolnych warstw drzewostanu w planowaniu hodowlanym
    Under-canopy layers in silvicultural planning
    Autorzy:
    Żybura, H.
    Pewniak, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/989497.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    planowanie hodowlane
    drzewostany sosnowe
    drzewostany wielopietrowe
    podszyt
    dab
    Quercus
    odnowienia podokapowe
    jakosc hodowlana
    scots pine
    oak
    silvicultural value
    multi−layer stands
    Opis:
    Currently observed climate change creates favourable conditions for the development of not only deciduous species (oak and beech), but also some coniferous (e.g. fir). In the Scots pine stands growing on fertile forest site types one can observe the dynamic development of the under−canopy layers composed of those species. Oak or beech saplings are often characterized by good silvicultural value. Also silver fir creates a well−developed cover under Scots pine trees. Beech and fir as the most shade−tolerant tree species are able to handle the conditions under Scots pine. They can grow for a long time under the cover without damage to their height or diameter growth. Especially, a dynamic growth of oaks can often be observed on fresh mixed coniferous and fresh mixed broadleaved habitats. Oak layers in Scots pine stands are generally created in the way of natural regeneration with remarkable contribution of the jays, which spread the seeds even at considerable distances from the old trees. The corresponding intensity of thinnings supports to shape the proper silvicultural value of such under−canopy storeys. Observations on growth of such stand layers in the Scots pine stands in eastern and central Poland consider the desirability of including them in the next generation of stands. Their presence contributes to improvement of the biological stability of the stands, and also leads to increased productivity. By implementing to the forest practice the model of semi−natural silviculture, one wants to consider the possibility of using the saplings currently existing under the Scots pine as a component of the future stand. Knowledge about the silvicultural value and the impact on growth of lower layers will enable to develop the principles of proper cultivation of the multi−storey stands.
    Źródło:
    Sylwan; 2016, 160, 10; 815-821
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagrożenie szkółek i drzewostanów, ze szczególnym uwzględnieniem olszy przez gatunki z rodzaju Phytophthora
    Autorzy:
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022006.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    grzyby
    czynniki chorobotworcze
    drzewostany
    zagrozenia roslin
    szkolki lesne
    Phytophthora
    lesnictwo
    olsza czarna
    Alnus glutinosa
    drzewa lesne
    fitopatologia lesna
    phytophthora spp.
    nurseries
    stands
    oak
    alder
    damage
    Opis:
    Many pathogenes of Phytophthora genera (P. cactorum, P. citricola, P. cinnamomi and P. citrophthora) are present in the forest and ornamental nurseries all over the Europe. They cause serious disease of many of forest tree species (f.ex. alder, oak and beech). Infected seedlings in nurseries when planted along river plantations are the main source of infection which spread further down of the stream. More research about this phenomen is needed in Poland.
    Źródło:
    Sylwan; 2005, 149, 06; 55-61
    0039-7660
    Pojawia się w:
    Sylwan
    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:
    Kryteria wieku dojrzałości drzewostanów do odnowienia
    The criteria of maturity age of a stand to regenerate
    Autorzy:
    Głaz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/973276.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Pinus
    Abies
    Picea
    buk
    Quercus
    Fagus
    drzewostany
    sosna
    świerk
    jodła
    dąb
    drzewa leśne
    leśnictwo
    wiek dojrzałości od odnowienia
    stands with natural regeneration
    maturity age of a stand to regenerate
    pine
    spruce
    fir
    beech
    oak
    Opis:
    Stand characteristics were analysed for the occurrence of regrowth with a species matching the dominant species of a stand. The analysis covered: stand age, stocking, degree of shelter (the sum of stocking plus the percentage of the shrub layer cover), dbh basal area, type and the dominant species of the vegetation cover. The obtained results were considered as preliminary criteria of the maturity age for regeneration.
    Źródło:
    Sylwan; 2003, 147, 04; 69-70
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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