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    Tytuł:
    Wpływ pory roku na uszkodzenia drzewostanów olchowych podczas trzebieży wczesnej
    Influence of the season on damage in black alder stands during early thinning
    Autorzy:
    Grzywiński, W.
    Turowski, R.
    Naskrent, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/978921.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    logging
    tree damage
    stand damage rates
    Alnus glutinosa
    Opis:
    The paper presents the comparison of the influence of the season (winter and summer) on the level of damage to trees remaining after the timber harvest during early thinning in young alder stands. The study was carried out in black alder stands aged 38 and 40 years located in north−eastern Poland (Płaska Forest District). Chainsaw logging was performed in the cut−to−length harvest system, while timber was extracted using an agricultural tractor with a trailer with manual timber loading and unloading. The number and share of damaged trees and stand damage rates were estimated in a particular season of the year. Logging resulted in the damage of 8.3% to residual trees. Almost twice as many trees were damaged in summer as in winter (p=0.001). Significantly higher share of trees in 3rd, 4th, and 5th damage classes was found. Only the damage of timber fibers (6th class) did not differ significantly between analyzed seasons. The stand weighted damage rate (W) ranged in winter from 0.12 to 0.38, and in summer between 0.12 and 0.80. In turn, the value of weighted coefficient of damaged trees in the remaining stand amounted to 10.24−60.15 in winter, and 19.07−119.64 in summer. Both W (p<0.01) and WDI (p<0.05) indices were twice higher in the summer than in the winter period.
    Źródło:
    Sylwan; 2020, 164, 05; 365-372
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uszkodzenia drzew w następstwie trzebieży wczesnych w nizinnych drzewostanach świerkowych
    Tree damage in lowland spruce stands caused by early thinnings
    Autorzy:
    Bembenek, M.
    Giefing, D.F.
    Karaszewski, Z.
    Mederski, P.S.
    Szczepańska-Alvarez, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/991597.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    uzytkowanie lasu
    drzewostany nizinne
    trzebiez wczesna
    drzewostany swierkowe
    swierk
    uszkodzenia drzew
    spruce
    tree damage
    timber harvest methods
    early thinning
    Opis:
    The paper presents analysis of tree damage after early thinning in lowland spruce stands. Percentage of tree with damage and weighted damage index (WDI) were considered. Three different thinning operations were analysed, in which different cutting method was applied. The smallest level of damage was observed when short wood system (SWS) was used. There were no significant differences between frequency of damage when full tree (FTS) and long wood (LWS) systems were compared.
    Źródło:
    Sylwan; 2013, 157, 10; 747-753
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uszkodzenia drzew w nizinnych drzewostanach świerkowych podczas zabiegu trzebieży późnej
    Tree damage in lowland spruce stands because of late thinning
    Autorzy:
    Bembenek, M.
    Giefling, D.F.
    Karaszewski, Z.
    Mederski, P.S.
    Szczepańska-Alvarez, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/993989.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    uzytkowanie lasu
    drzewostany nizinne
    trzebiez pozna
    pozyskiwanie drewna
    metody pozyskiwania drewna
    drzewostany swierkowe
    swierk
    uszkodzenia drzew
    norway spruce
    tree damage
    thinning operations
    Opis:
    The paper studies tree damage after late thinning operation in lowland spruce stands. The research was done in the 4ͭʰ age class stands, where three different methods of timber harvesting were applied: full tree system (FTS), long wood system (LWS), short wood system (SWS). The lowest level of damage was observed in SWS.
    Źródło:
    Sylwan; 2013, 157, 12; 892-898
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stan zdrowotny drzewostanów sosnowych (Pinus sylvestris L.) Nadleśnictwa Olkusz
    Autorzy:
    Dmyterko, E.
    Kluziński, L.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1019688.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    witalnosc
    defoliacja
    drzewostany sosnowe
    Nadlesnictwo Olkusz
    wskaznik uszkodzenia drzew
    metody badan
    stan zdrowotny lasu
    lesnictwo
    stands health condition
    assessment methods
    defoliation
    vitality
    index of tree damage
    scots pine
    (pinus sylvestris l.)
    Opis:
    Basing on tree crown characteristics different variants of the damage assessment method for pine stands were distinguished. The verification of the variants was carried out in 35 stands of the Olkusz Forest District that in the past had been under strong impact of industrial emissions. Prevalence of slightly dam− aged stands was observed in the studied area. Taking into consideration a high share of non−damaged stands it was stated that the actual health status of forests in the Olkusz Forest District's is satisfactory.
    Źródło:
    Sylwan; 2005, 149, 07; 3-13
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stopień uszkodzenia świerka, jodły i modrzewia w Sudetach Zachodnich
    Degree of damage to spruce, fir and larch stands in the Western Sudetes
    Autorzy:
    Korzybski, D.
    Mionskowski, M.
    Dmyterko, E.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/993196.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy gorskie
    drzewostany swierkowe
    drzewostany jodlowe
    drzewostany modrzewiowe
    drzewa lesne
    swierk
    Picea
    jodla
    Abies
    modrzew
    Larix
    uszkodzenia drzew
    stopien uszkodzenia
    defoliacja
    stopien defoliacji
    zywotnosc
    stan wierzcholka drzewa
    Nadlesnictwo Kamienna Gora
    Nadlesnictwo Szklarska Poreba
    Nadlesnictwo Sniezka
    Nadlesnictwo Swieradow
    Sudety Zachodnie
    tree damage index
    defoliation
    tree growth response
    Opis:
    The aim of this research was to assess damage to three important forest−forming trees species in the mountains – spruce, fir and larch, and to study their increment reaction to changing environmental conditions. Research concerned forests under the management of four forest districts located in the Western Sudetes (SW Poland). Index W ranging from 0 to 3 was used for the assessment of the damage to trees based on three crown characteristics: defoliation, top−crown condition and tree vitality. Trees of damage degree 2 dominated in each of the species; dying trees (degree 3) were also found. Total share of these two degrees of damage was ca 80% for spruce, 84% for fir and 74% for larch. Analysis of increment reaction of investigated species showed their similar response to changes in the environment. The increase in the share of trees showing positive responses and the decrease in the share of negative responses in the past half century, indicate an improvement in the growth conditions of spruce, fir and larch in Western Sudetes.
    Źródło:
    Sylwan; 2013, 157, 02; 104-112
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stanu zdrowotnego drzewostanów sosnowych po gradacji ochojnika sosnowego (Pineus pini L.) w nadleśnictwach Łuków i Ostrów Mazowiecka
    Assessment of the health condition of pine stands following the pine woolly aphid [Pineus pini L.] outbreak in the Lukow and Ostrow Mazowiecka Forest Districts
    Autorzy:
    Wojtan, R.
    Bystrowski, C.
    Tomusiak, R.
    Zasada, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1018321.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    szkodniki roslin
    stan zdrowotny lasu
    Pineus pini
    ochojnik sosnowy
    lesnictwo
    gradacja
    tree dieback
    defoliation
    vitality
    synthetic index of damage
    pinus sylvestris
    pineus pini
    Opis:
    There has been a massive occurrence of aphids observed in 2001 in many Scots pine stands of the Mazovia region. This pest has been later identified as pine woolly aphid (Pineus pini L.). The result of the pest's feeding was a significant tree defoliation reaching even 80%. The article presents results of the tree health condition assessment performed in the attacked stands three years after a maximum intensity of the pine woolly aphid occurrence.
    Źródło:
    Sylwan; 2006, 150, 08; 11-19
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stan zdrowotny drzewostanów jesionowych (Fraxinus excelsior L.) Nadleśnictwa Mircze
    Health condition of ash stands (Fraxinus excelsior L.) in Mircze Forest District
    Autorzy:
    Dmyterko, E.
    Wojtan, R.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1024293.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    Nadlesnictwo Mircze
    drzewostany jesionowe
    jesion wyniosly
    stan zdrowotny lasu
    zywotnosc
    stan zdrowotny drzew
    Fraxinus excelsior
    lesnictwo
    drzewa lesne
    tree dieback
    defoliation
    vitality
    synthetic index of damage
    fraxinus excelsior
    Opis:
    For several years, Poland has been facing the dieback of ash stands. The paper describes this phenomenon on the example of stands in the Mircze Forest District situated in the eastern regions of the country. The damage to these stands was assessed using a „stand method” that distinguishes three variants based on crown defoliation, vitality and synthetic index of tree damage being a combination of the first two criteria. Study results confirmed the poor health condition of ash stands in the Mircze Forest District.
    Źródło:
    Sylwan; 2003, 147, 12; 9-18
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza porównawcza stopnia uszkodzenia jesionu wyniosłego (Fraxinus excelsior L.) i olszy czarnej (Alnus glutinosa (L.) Gaertn.), rosnących w zmieszaniu lub bliskim sąsiedztwie
    Autorzy:
    Dmyterko, E.
    Tomusiak, R.
    Wojtan, R.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022270.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    witalnosc
    defoliacja
    uszkodzenia drzew
    sasiedztwo roslin
    jesion wyniosly
    Fraxinus excelsior
    lesnictwo
    olsza czarna
    stopien zmieszania drzew
    zamieranie drzew
    Alnus glutinosa
    drzewa lesne
    tree dieback
    defoliation
    vitality
    synthetic damage indicator
    fraxinus excelsior
    alnus glutinosa
    Opis:
    The paper presents a comparative analysis of the degree of damage to common ash and black alder trees growing in mixture or a close neighbourhood. Three variants of the damage assessment method were applied in the analysis: defoliation−based variant I, vitality variant II and synthetic damage indicator−based variant III. It was demonstrated that on average ash stands were more damaged than alder stands. This allowed to put forward a hypothesis that there is an alternative to replace ash with black alder on some, especially wet habitats where the dieback process is largely advanced.
    Źródło:
    Sylwan; 2005, 149, 02; 3-11
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kryteria określania uszkodzenia jodły (Abies alba Mill.)
    Criteria of assessment the damage to silver fir
    Autorzy:
    Dmyterko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1012879.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    jodla pospolita
    uszkodzenia drzew
    korony drzew
    Abies alba
    cechy morfologiczne
    lesnictwo
    kryteria oceny
    drzewa lesne
    criteria of assessment the damage to the trees
    defoliation
    vitality
    tree−top condition
    silver fir (abies alba)
    Opis:
    The paper presents criteria of assessment the damage to silver fir that were elaborated on the basis of the features describing the development of fir crown that is assimilation apparatus condition (feature A), tree− top condition (feature B) and tree vitality (feature C). Feature A is based on the defoliation, feature B assesses length of last height increments and branching, while feature C takes into account loss of branches in the middle part of the crown and percentage of the alive shoots on branches of higher order. Determined criteria may be applied in methods of the assessment the damage to stands and forests of units of higher position in different classifications.
    Źródło:
    Sylwan; 2008, 152, 04; 3-12
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zagęszczenia na wzrost i jakość hodowlaną sosny w odnowieniach naturalnych
    Effect of density on growth and silvicultural value of Scots pine in natural regeneration
    Autorzy:
    Tarasiuk, S.
    Kopeć, K.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/973324.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    hodowla lasu
    odnowienia naturalne
    naloty
    sosna zwyczajna
    Pinus sylvestris
    leśnictwo
    młodniki
    wzrost roślin
    zagęszczenie drzew
    przyrost wysokości
    jakość hodowlana
    scots pine
    natural regeneration
    stand tending
    tree height
    silvicultural quality
    biotic and abiotic damage
    Opis:
    The paper was aimed at determination of the effect of different tree density in the naturally regenerated monotypic and even aged young Scots pine stands growing in the fresh coniferous or mixed fresh coniferous forest sites on their further development. Research was carried out in Nowa Dęba Forest District (south−eastern Poland). A total of 12 research plots (160×40 m) were established in the selected stands. Plots were divided into 4 equal square pieces (40×40 m), where different methods of tending were applied (variant A – control, variant B – thinned, leaving 16 thousand trees/ha, variant C – thinned, leaving 10 thousand trees/ha, variant D – thinned, leaving 6 thousand trees/ha). The thinning was carried out in April 2007. In subsequent years (2007−2010), selected elements of stand structure like: height, height increment, density and damage resulting from abiotic and biotic factors were determined. Tree density significantly influenced both height increment and qualitative (tree shape) characteristics of naturally regenerated young pine trees. In the course of early thinnings, the number of trees needs to be reduced approximately down to the 10−16 th. stems/ha in the first stage of growth (seedlings), and further down to about 6 th./ha in the coppice stage. Such density enhances the chance of good growth and silvicultural quality of the stand. Noteworthy, even the heavy thinning does not significantly impact the actual proportion of both biotic (e.g. ungulate browsing) and abiotic (e.g. heavy snow) damage in the young naturally regenerated Scots pine forest stands.
    Źródło:
    Sylwan; 2015, 159, 12; 989-996
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tempo zarastania spał na jodle oraz niektóre czynniki na nie wpływające
    The rate of bark-stripping wound closure in fir and some factors affecting it
    Autorzy:
    Pach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1012919.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    korony drzew
    lesnictwo
    spalowanie
    tempo zarastania
    szkody lowieckie
    spaly
    jodla pospolita
    uszkodzenia drzew
    Abies alba
    cechy morfologiczne
    zywotnosc
    zarastanie
    drzewa lesne
    abies alba
    bark−stripping damage
    wound closure
    wound characteristics
    live crown ratio
    tree vigour
    Opis:
    The paper presents results of the research conducted in the stands with fir stripped by red deer in the territory of the Forest Experimental Station in Krynica (Beskid Sądecki). The average rate of wound closure expressed in the width of wound closure and the time needed for a wound to heal was determined on the basis of detailed analyses of bark−stripping wounds in the cut trees. Factors influencing wound closure were identified as well. In addition, a multiple regression model explaining about 51% of the variation of the wound healing time was presented.
    Źródło:
    Sylwan; 2008, 152, 04; 46-57
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie modelu ryzyka uszkodzenia drzewostanu przez wiatr do oceny procesu śmiertelności drzew w Sudetach w latach 2015-2017
    Application of the wind damage risk model for the assessment of tree mortality in the Sudety Mts. in 2015-2017 period
    Autorzy:
    Dmyterko, E.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/979365.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Sudety
    drzewostany
    wiatry
    szkody w lesie
    ryzyko uszkodzenia
    modele ryzyka uszkodzenia
    zamieranie drzew
    czynniki klimatyczne
    lata 2015-2017
    leśnictwo
    drzewa leśne
    RDLP Wrocław
    tree mortality
    critical value of deadwood harvest
    wind damage risk model
    forest threat measure
    Opis:
    A dynamic process of mortality of Norway spruce stands in south−west Poland, mainly in the Sudety Mts. was observed in 2015. It was associated with an insufficient amount of precipitation in the growing season. This process was intensified by the outbreak of insects, especially bark beetles. The aim of the paper was to verify the hypothesis that the application of the stand damage risk model allows to identify stands, which may possibly be predisposed to mortality, after a long−lasting drought in the growing season. The studies concerned the forests of the Wrocław Regional Directorate of State Forests (tab. 1). Their area covers 245,000 ha, the timber volume amounts to 83 million m3 (338 m3/ha) and the volume increment to 2.3 million m3 (9.4 m3/year/ha). The fraction of spruce is the largest (50.3%), ranging from 7.1% (Pieńsk Forest District) to 84.8% (Lądek−Zdrój Forest District). The average age of stands is 74 years, ranging from 56 (Pieńsk Forest District) to 85 years (Jawor Forest District). The drought in 2015 caused an increase in the dynamics of spruce decline. The ratio of harvested to model deadwood volume at a level of up to 5% was assumed the ‘norm’ that characterizes the process of natural spruce mortality. Values higher than normal mean a more intense process of tree mortality caused by external factors (e.g. hurricane winds, floods, droughts). In 2014, the harvested deadwood was below the norm in 15 forest districts (fig. 1). In 2015, the highest ratio values (above 20%) were reported in the Wałbrzych and Szklarska Poręba forest districts (fig. 1). In 2016, the harvest of deadwood in each forest district exceeded the norm, and the highest values were found in the Jawor (102.3%), Bardo Śląskie (83.3%) and Świdnica (69.7%) forest districts. In 2017, the highest ratios of harvested to model deadwood volume were reported in the Bardo Śląskie (117.2%), Jawor (83.6%), Henryków (83.5%) and Świdnica (67.1%) forest districts. The model was found to identify also the stands that are most threatened by droughts. These are stands in the highest damage risk factor Wr class. The highest percentage of deadwood in this damage class was in Jawor (88.8%), Bardo Śląskie (81.9%), Miękinia (79.4%), Świdnica (76.7%), Henryków (73.8) and Złotoryja (73.6%) forest districts. It was also shown that the average value of the measure of threat to forests Ms was 35, qualifying them as highly threatened (fig. 3). Forests characterized by the highest level of threat Ms>40 was found in five forest districts, while in nine others the level of threat was high. The forests of the Sudety Mts. are threatened by the decline and the main direct causes of this process was the long−lasting drought in the growing season, causing damage to the stands earlier weakened by wind and other factors.
    Źródło:
    Sylwan; 2019, 163, 11; 903-912
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reakcja przyrostowa świerka w powiązaniu ze stopniem uszkodzenia korony
    Increment reaction of Norway spruce in connection with the crown damage level
    Autorzy:
    Bruchwald, A.
    Dmyterko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016122.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    korony drzew
    stopien uszkodzenia
    Picea abies
    lesnictwo
    piersnice drzew
    przyrosty roczne
    przyrost drzew
    swierk pospolity
    drzewa lesne
    increment of the diameter at the breast height
    increment reaction
    criteria of the assessment
    the damage to trees
    defoliation
    vitality
    tree−top condition
    norway spruce
    Opis:
    The study presents the analysis of the increment of tree diameter at the breast height in connection with two variants of the method of assessment the damage to Norway spruce stands. Variants utilise different assessment criteria. The first one is based on the tree's defoliation, the other one – on the damage index W that links defoliation, condition of the tree−top and branching in the middle part of the crown. Detected relations between damage criteria and type of the increment reaction show that index W characterises the damage to trees and stands better than feature A (defoliation). Therefore, method of assessment the damage to trees and stands based on this parameter is suggested for utilisation in the forestry practice.
    Źródło:
    Sylwan; 2007, 151, 11; 22-34
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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