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    Wyświetlanie 1-34 z 34
    Tytuł:
    Application of aerial hyperspectral images in monitoring tree biophysical parameters in urban areas
    Autorzy:
    Jarocińska, Anna
    Białczak, Małgorzata
    Sławik, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2117028.pdf
    Data publikacji:
    2018-04-10
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    AISA
    Białystok
    discolouration
    defoliation
    vegetation indices
    Opis:
    Monitoring of trees in urban areas can be conducted using remote sensing, but should be supported by field measurements. The article aims to present the research method used to evaluate discolouration and defoliation of trees and tree damage in the city of Białystok in Poland. The analyses were done using AISA hyperspectral images. Field measurements encompassed determining the locations, species and levels of discolouration and defoliation of trees. Remote sensing indices of vegetation were calculated and correlated with the field-measured values of discolouration and defoliation. Based on that, values of discolouration and defoliation were calculated and evaluated against the field studies. The RMSE of the acquired data was around 16%. Using parameter values, a map of tree damage was drawn up. Based on the analysis, it can be stated that a significant number of trees is undamaged, although a large portion of the trees falls into the warning class.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2018, 22, 1; 56-62
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The relationship between height and diameter trees of Scots pine (Pinus sylvestris L.) and the extent of crown defoliation in the Kampinos National Park
    Autorzy:
    Przybylski, Paweł
    Tyburski, Łukasz
    Mohytych, Vasyl
    Powiązania:
    https://bibliotekanauki.pl/articles/2041706.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Scots pine
    health condition
    defoliation
    Kampinos Forest
    Opis:
    Forests in Kampinos National Park contain some of the most valuable tree populations in Poland. Particularly interesting are stands of Scots pine (Pinus sylvestris L.) that are more than 130-years-old. Periodic observations of the health of tree crowns in these stands facilitates a wide range of research investigations. This article evaluates statistical relationships between allometric features of trees and the occurrence and severity of crown defoliation. Observations were made of 5 pine populations in 2017 and 2019, in which detailed data were collected for 250 trees. The percentage loss of the assimilation apparatus and level of stand damage were calculated. The results revealed a significant increase in defoliation between 2017 and 2019. The deterioration of crown condition was particularly evident on the most fertile sites. The degree of crown damage was not correlated with tree height or diameter. The greatest increase in defoliation between 2017 and 2019 was observed for the most severely damaged trees growing on fertile sites. This study contributes analyses aimed at correlating the allometric features of a stand with its health. Such information is valuable as it describes the status of the analysed stands, as well as providing information about how trees have responded to environmental conditions. In this study, crown defoliation coincided with a period of drought in Poland, which appears to have affected pine stands. For these reasons, the results are of both scientific and practical value.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 1; 22-30
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zabiegu agrotechnicznego na stan zdrowotny klonalnej plantacji nasiennej jesionu wyniosłego (Fraxinus excelsior L.) w kontekście jej porażenia przez Hymenoscyphus fraxineus (T. Kowalski)
    Effect of agrotechnical treatment on the health condition of the clonal seed ash plantation (Fraxinus excelsior L.) in the context of its infection by Hymenoscyphus fraxineus (T. Kowalski)
    Autorzy:
    Przybylski, P.
    Sikora, K.
    Mohytych, V.
    Włostowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/978969.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    resistance selection
    seed orchard
    defoliation
    Fraxinus excelsior
    Hymenoscyphus fraxineus
    Opis:
    Ash is an important component of European forest ecosystems. In recent years the stability of the species has been threatened by the fungus Hymenoscyphus fraxineus (T. Kowalski) Baral, Queloz & Hosoya 2014 (anamorph Chalara fraxinea). Infested stands die out dynamically, and forest management does not have the seeds to restore future populations. Seed orchards may be a suitable place, where the seed can be obtained, and through which the results of immunological selection can be implemented. To reduce the infestation of seed orchards by H. fraxineus, autumn leaves that are the source of inoculum can be removed. Hence, the main aim of the study was to assess the impact of the removal of fallen leaves on the health status of clonal seed orchard of ash. The studied seed orchard is located in the Łomża Forest District (N 22.06, E 53.31), observations were made on 237 strains of 31 clones of parents. The health of ash trees based on the defoliation of crowns was assessed in August, in years 2018−2019. In order to reduce the source of H. fraxineus inoculum in the next vegetation season, an agrotechnical procedure was carried out on the orchard site to completely remove fallen ash leaves. ANOVA was used to determine the effect of this procedure on the health of ash crowns. A significant reduction in the level of defoliation (F=12.89) was demonstrated over the years of observation. The reaction of individual clones to the procedure was not uniform. The best result was obtained for clones with low and stable defoliation levels in strains. This result confirms that systematic application of agrotechnical treatment has a beneficial effect on the health and regeneration capabilities of selected clones. This result is as expected and shows the potential to carry out immunological selection of ash.
    Źródło:
    Sylwan; 2020, 164, 05; 404-413
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of canopy density on the defoliation of the European silver fir (Abies alba Mill.) due to heavy industrial pollution
    Autorzy:
    Filipiak, M
    Napierala-Filipiak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/41603.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    silver fir
    European silver fir
    Abies alba
    canopy density
    defoliation
    air pollution
    industrial pollution
    crown defoliation
    crown regeneration
    ecology
    heavy industrial pollution
    environment protection
    Opis:
    Until recently, the level of industrial air pollution in the Sudetes (a mountain range extending on the Czech Republic and Poland border) was very high.This caused a large-scale forest decline, especially in the western part of the Polish Sudetes: in the Izerskie and Karkonosze Mts. An analysis of data on fir defoliation in that area, collected directly after the period of heavy industrial pollution, showed a clear dependence of the degree of defoliation of the primary crown on canopy density: the lower the density, the higher the degree of defoliation.
    Źródło:
    Dendrobiology; 2009, 62; 17-22
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Grasslands Improvements for Faunistic Purposes in a Mountain Area of Central Italy
    Autorzy:
    Argenti, Giovanni
    Messeri, Alessandro
    Ponzetta, Maria Paola
    Powiązania:
    https://bibliotekanauki.pl/articles/24201796.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    pasture restoration
    biodiversity
    fern
    wild ungulates
    defoliation rate
    pastoral value
    Opis:
    Restoration of grassland habitats useful for wildlife is an intervention often carried out in various marginal environments (such as some mountainous areas) where agriculture and grassland management have undergone deep changes in recent decades. To assess some of these interventions, a study was conducted in an Apennine reserve in Central Italy, where some grassland areas recovered through different techniques were identified, represented by shrub clearing followed by sowing of a forage mixture and shrub clearing alone, which were compared with natural areas on which no interventions were carried out. Several parameters related to the botanical composition and quality of the recovered pastoral resources were analysed. In addition, in three different experimental sites, further in-depth investigations were carried out to assess the actual animal frequentation and the impact of the in-take of the wild animals present (mainly red deer) on the occurring vegetation. Results highlighted the importance of recovery interventions in these situations, the success of mechanical treatments (even if represented by clearing shrubs alone), and the real appreciation for the recovered areas by wildlife, whose utilisation on different vegetal species could be assessed, highlighting a diverse feeding behaviour for some taxa, compared to domestic animals.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 3; 366--377
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved methods of classification of multispectral aerial photographs: evaluation of floodplain forests in the inundation area of the Danube
    Autorzy:
    Bucha, T.
    Slavik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/38725.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    classification
    aerial photograph
    flood plain forest
    defoliation
    inundation area
    Danube flood plain
    Opis:
    The Gabčíkovo hydroelectric power plant has significantly influenced Danube water regime, thus the condition of floodplain forests in the region. Forest condition has been regularly monitored since 1995 using aerial photos. The subject of this study was to improve the procedure of floodplain forest health evaluation based on digital multispectral aerial images. Firstly, the forest mask was created with overall accuracy 89%, and next, tree health was evaluated using defoliation as health indicator. We applied orthogonal transformation of 4 original bands of multispectral imagery into two-dimensional space. Marginal values of digital numbers (DN) of the first component (New Synthetic Channel – NSC1) were defined by fully foliated willow and poplar. The second component (NSC2) was optimised for damage estimation. Calculated DN values of NSC2 represented a perpendicular distance from the line of DN values of the first component. The distance from the line was proportionate to tree damage extent in a given pixel. We generated linear regression model between pair values of NSC2 and defoliation evaluated for 38 trees in the field, respectively, from aerial photos. A decline prediction resulted in r-square equal 0.86. Finally, we used the model to predict defoliation for each picture element (pixel) of the component NSC2.
    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:
    Wpływ zanieczyszczeń z Legnicko−Głogowskiego Okręgu Miedziowego na stan koron sosny zwyczajnej (Pinus sylvestris L.) w Nadleśnictwach Góra Śląska i Włoszakowice
    Effect of contaminations from the Legnica−Głogów Copper Mining Centre on the crown condition of Scots pine trees (Pinus sylvestris L.) in Góra Śląska and Włoszakowice forest divisions
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026788.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    oddzialywanie na rosliny
    zanieczyszczenia przemyslowe
    oddzialywanie na srodowisko
    lesnictwo
    zanieczyszczenia powietrza
    Nadlesnictwo Wloszakowice
    Pinus sylvestris
    drzewostany sosnowe
    kora drzew
    tereny przemyslowe
    Nadlesnictwo Gora Slaska
    sosna zwyczajna
    Legnicko-Glogowski Okreg Miedziowy
    scots pine
    mean defoliation
    defoliation distribution
    defoliation index
    damage index
    damage zone
    Opis:
    In 2002, workers from the Chair of Forest Management of the Poznań Agricultural University carried out crown observations of Scots pine (Pinus sylvestris L.) trees in two working circles – Góra Śląska (Góra Śląska Forest Division) and Wschowa (Włoszakowice Forest Division). The basic of the study comprised experimental plot established in pairs on stands of the IIIrd and IVth age classes. A given experimental plot was made up of 25 trees from the main stand. The purpose of the performed investigations was to ascertain the crown condition of trees from pine stands and to determine whether and what extent the trans−border contamination from Legnica−Głogów Copper Mining Centre has an impact on this contamination.
    Źródło:
    Sylwan; 2003, 147, 09; 10-26
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Method of external assessment of the quality of sugar beet roots
    Metoda oceny zewnętrznej jakości korzeni buraków cukrowych
    Autorzy:
    Przybył, J.
    Mioduszewska, N.
    Wojcieszak, D.
    Durczak, K.
    Ożańska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/289184.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    harvesting
    sugar beet
    topping
    defoliation
    quality of roots
    burak cukrowy
    zbiór
    ogławianie
    defoliacja
    jakość korzeni
    Opis:
    The research problem of the paper concerned verification whether applicable or known methods of post-harvesting evaluation of the roots of sugar beet may be applied to the assessment of the quality of work of technically varied new machinery for sugar beet harvesting. Tests of machines of varied solutions of working units, in particular a topping unit, were carried out in order to accomplish the objective of the paper. Two self-propelled combine harvesters of Ropa euro-Tiger V8-3 type and Kleine Beetliner Large and two sets for 2-stage harvesting by M.A.C.E (Spain) and Amity (USA) companies were used in the study. Ropa euro-Tiger and Kleine Beetliner Large combine harvesters and M.A.C.E. set were equipped with a beet topper but of a varied topping system, whereas, only a defoliator was used in the set by Amity company. Field research of machines included assessment of the topping quality, losses caused by the broken tip of roots and damages of the lateral surface of roots. Research assumptions were assumed according to the method of the International Institute for Beet Research (I.I.R.B.). Moreover, assessment of the topping quality with the method of the Netherlands Institute of Sugar Beet Research (IRS) and the Institute of Agricultural Engineering of the Bonn University was carried out. Assessment of roots after defoliation was carried out based on the Roller's classification (2010). Based on the research results and analyses which were carried out, it was proved that the methods of measurement of the quality of beet harvesting machines operation are not fully useful for assessment of the introduced technical and technological changes. It mainly concerns the assessment of the roots topping. Thus, two modified methods of assessment of the quality of roots topping were suggested. They may be used both for machines equipped with a topping device and a defoliator.
    Problem badawczy pracy dotyczył sprawdzenia, czy obowiązujące lub znane metody oceny pozbiorowej jakości korzeni buraka cukrowego można stosować do oceny jakości pracy zróżnicowanych technicznie nowych maszyn do zbioru buraków cukrowych. Dla zrealizowania celu pracy przeprowadzono badania maszyn o zróżnicowanych rozwiązaniach zespołów roboczych, a w szczególności zespołu ogławiającego. Do badań wyznaczono dwa kombajny samojezdne typu Ropa euro-Tiger V8-3 i Kleine Beetliner Large oraz dwa zestawy do zbioru 2-etapowego firm M.A.C.E. (Hiszpania) i Amity (USA). Kombajny Ropa euro-Tiger i Kleine Beetliner Large oraz zestaw M.A.C.E. były wyposażone w ogławiacz, ale o różnym rozwiązaniu dogławiacza, natomiast w zestawie firmy Amity zastosowano wyłącznie defoliator. Badania polowe maszyn obejmowały ocenę jakości ogłowienia, strat spowodowanych obłamanym końcem korzeni oraz uszkodzeń powierzchni bocznej korzeni. Założenia badawcze przyjęto zgodnie z metodą Międzynarodowego Instytutu Buraka Cukrowego (I.I.R.B.). Wykonano również ocenę jakości ogłowienia metodą Holenderskiego Instytut Buraka Cukrowego (IRS) oraz Instytutu Inżynierii Rolniczej Uniwersytetu w Bonn. Ocenę korzeni po defoliacji przeprowadzono na podstawie klasyfikacji Rollera (2010). Na podstawie wyników badań i przeprowadzonych analiz wykazano, że stosowane obecnie metody pomiaru jakości pracy maszyn do zbioru buraków nie są w pełni przydatne do oceny wprowadzanych zmian technicznych i technologicznych. Dotyczy to przede wszystkim oceny ogłowienia korzeni. Dlatego zaproponowano dwie zmodyfikowane metody oceny jakości ogłowienia korzeni, które można zastosować zarówno do maszyn wyposażonych w ogławiacz, jak i defoliator.
    Źródło:
    Inżynieria Rolnicza; 2013, R. 17, nr 4, t. 2, 4, t. 2; 113-125
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Defoliacja koron drzew sosny zwyczajnej (Pinus sylvestris L.) wybranych klas biosocjalnych niezależnie od strefy uszkodzenia, klasy wieku i typu siedliskowego lasu
    Crown defoliation of Scots pine [Pinus sylvestris L.] in selected biosocial classes irrespective of damage zone, age class and forest site type
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1012893.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    korony drzew
    klasy Krafta
    sosna zwyczajna
    lesnictwo
    Pinus sylvestris
    drzewa lesne
    defoliation
    scots pine
    biosocial classes
    Opis:
    The paper presents the results of the investigation of the tree crown defoliation in different Kraft’s classes irrespective of damage zone, age class and forest site type. Biosocial position turned out to be itself a decisive factor influencing the significance of the differences in the mean defoliation of the crowns.
    Źródło:
    Sylwan; 2008, 152, 04; 13-20
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Statystyczna małopowierzchniowa metoda oceny zdrowotności drzew. Część I. Opis metody
    Statistical small-scale survey method for evaluation of tree health. Part I. Method description
    Autorzy:
    Podlaski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1024088.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    schemat losowania proby
    system SINUS
    drzewostany
    metoda malopowierzchniowa
    lesnictwo
    zdrowotnosc drzew
    metody oceny
    small−scale survey
    sinus system
    defoliation
    survey sampling
    Opis:
    The article provides assumptions for a small−scale statistical method for tree health assessment. A survey was used to detect the degree of defoliation by applying an simple random sampling design on P3 plots of the SINUS system. The proposed small−scale method can be a valuable supplementary method to the existing large−scale methods used for the assessment of tree health condition in Poland.
    Źródło:
    Sylwan; 2004, 148, 12; 58-63
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ typu podszytu na teledetekcyjny pomiar defoliacji Quercus robur L. w zakresie 640-820 nm
    The impact of the type of undergrowth on the remote sensing defoliation measurement of Quercus robur L. in the range: 640-820 nm
    Autorzy:
    Kotlarz, J.
    Kacprzak, M.
    Rotchimmel, K.
    Tkaczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/275799.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    teledetekcja lasu
    zdrowotność
    zdjęcia wielospektralne
    bliska podczerwień
    UAV
    defoliacja
    remote sensing of the forest
    health status
    multispectral images
    near infrared
    defoliation
    Opis:
    Jednym z objawów zamierania drzewostanów dębowych w Europie jest wysoka defoliacja obserwowana u drzew o słabej zdrowotności. Na potrzeby corocznego monitoringu dotkniętych patogenem Phytophtora powierzchni badawczych projektu HESOFF w Zakładzie Teledetekcji Instytutu Lotnictwa podjęto próbę wytworzenia metodyki oceny defoliacji za pomocą lotniczych zdjęć wielospektralnych. W tym celu w lipcu 2015 r. za pomocą Platformy Wielosensorowej QUERCUS.6 wykonano zdjęcia lotnicze badanego kompleksu leśnego (zakres 0,46–0,82 μm). Na podstawie zdjęć wykonano pomiar reflektancji dla każdego z badanych dębów oraz porównano pozyskane w ten sposób dane radiometryczne z ocenionym metodą tradycyjną poziomem defoliacji. Na podstawie uzyskanych korelacji wykazano, że pomiar defoliacji jest możliwy przy zastosowaniu kanałów optycznych: 0,46–0,52 μm oraz 0,67–0,82 μm. Wykazano ponadto, że do poprawnego pomiaru defoliacji zaproponowaną w tym artykule metodą, konieczne jest uwzględnienie typu podszytu, który ma decydujący wpływ na obserwowaną reflektancję.
    One of the symptoms of dieback of oak stands in Europe is high defoliation, observed in trees with poor health. For the purposes of annual monitoring (in research project HESOFF) of the research area affected by the pathogen Phytophthora, in the Remote Sensing Department of Institute of Aviation was made attempt to develop a proper methodology for defoliation evaluation with multispectral aerial images use. For this purpose in July 2015 with the use of the Multisensory Platform QUERCUS.6 aerial photos of the test forest complex were made (range: 0.46–0.82 μm). Based on the photos, reflectance measurements for each of investigated oaks were made and acquired parameters have been compared with defoliation level obtained by conventional methods. Based on these correlation has been demonstrated that defoliation measurement is possible with use of optical channels: 0.46–0.52 μm and 0.67–0.82 μm. It was also shown that for correct defoliation measurement with proposed in this article methodology it is necessary to take into account the type of underbrush, which has a decisive influence on the observed reflectance.
    Źródło:
    Pomiary Automatyka Robotyka; 2018, 22, 1; 5-10
    1427-9126
    Pojawia się w:
    Pomiary Automatyka Robotyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wiek a defoliacja koron sosny zwyczajnej (Pinus sylvestris L.) wybranych klas biosocjalnych
    Age and crown defoliation of Scots pine trees [Pinus sylvestris L.] of selected biosocial classes
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1017728.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    klasy Krafta
    wiek drzew
    sosna zwyczajna
    lesnictwo
    Pinus sylvestris
    drzewa lesne
    defoliation
    scots pine
    age classes
    sub−age classes
    biosocial classes
    Opis:
    In the year 2003, crown defoliation of Scots pines (Pinus sylvestris L.) of the 3rd and 4th age class was assessed on 90 test plots comprising, in each case, 25 trees derived from the main stand. This study comprises analyses and evaluation of the significance of differences of the mean defoliation of tree crowns of different Kraft classes from the same age classes and sub−classes as well as the mean defoliation of tree crowns of the same Kraft classes from different age classes and sub−classes (α=0.05).
    Źródło:
    Sylwan; 2007, 151, 10; 16-24
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stopień uszkodzenia drzewostanów jodłowych Gór Świętokrzyskich
    Degree of the damage to silver fir stands in the Swietokrzyskie Mountains
    Autorzy:
    Dmyterko, E.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/989225.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Gory Swietokrzyskie
    drzewostany jodlowe
    jodla pospolita
    Abies alba
    uszkodzenia drzew
    defoliacja
    zywotnosc drzew
    abies alba
    damage
    defoliation
    increment reaction
    świetokrzyskie mountains
    Opis:
    The study assesses the damage to silver fir from the canopy layer in the stands of the Świętokrzyskie Mountains (central Poland) using three methods. The suitability of these methods was also analysed by calculating the correlation between increment of the diameter at breast height (DBH) and the level of damage. In total we investigated 240 trees. The first analysed method involves tree defoliation. The mean defoliation of sample accounts for 47.8%, while majority of the trees were found to be within 2nd damage class (fig. 1). Absolute and relative DBH increment does not correlate with tree defoliation strongly (tab.). The next method is based on the assessment of the average tree damage index W that takes into account defoliation, top condition and vitality. In general, analysed trees were found to have reduced height growth and both branching in the top (fig. 2) and central (fig. 3) section of the crown. Inclusion of the secondary crown in the assessment of tree damage resulted in an increase in the vitality of the whole crown (fig. 3). The assessment of damage based on index W showed that largest proportion of trees was within moderate damage and the value of the damage index was lower than in method based exclusively on defoliation. The last method (morphological−incremental) combines the method based on damage index W with DBH increment (index Wz, formula 3). In the period 1971−1985, most of the fir trees reacted negatively to the environment changes (growth reduction), while the proportion of trees with positive responses decreased. In the period 1976−2000, the proportion of trees with negative response decreased, while the proportion of firs with positive and neutral responses increased (fig. 5). The period 2001−2015 faced the dominance of trees showing neutral growth responses, the proportion of trees with positive responses was fairly high, while the proportion of trees with negative responses was the smallest. The highest value of the correlation coefficient (r=–0.661) was found for the correlation between the relative 10−years DBH growth and damage index Wz2(tab.). Of the three discussed damage assessment methods, this method is therefore considered the most accurate.
    Źródło:
    Sylwan; 2016, 160, 04; 299-308
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Defoliacja górnej części i całej korony drzew sosny zwyczajnej (Pinus sylvestris L.)
    Defoliation of the top part and whole crown of Scots pine [Pinus sylvestris L.]
    Autorzy:
    Jaszczak, R.
    Miotke, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1011971.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    klasy wieku
    korony drzew
    klasy Krafta
    sosna zwyczajna
    lesnictwo
    Pinus sylvestris
    drzewa lesne
    scots pine
    defoliation
    crown
    biosocial classes
    age classes
    Opis:
    In 2007, crown defoliation of trees was observed in Scots pine stands in the Siemianice Experimental Forest District. The obtained results were used for the analysis of the mean size and variability of the top part and the whole crown of Scots pine in individual experimental plots as well as in the selected age and Kraft’s classes.
    Źródło:
    Sylwan; 2009, 153, 09; 607-616
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strefy uszkodzenia a defoliacja koron drzew sosny zwyczajnej (Pinus sylvestris L.) wybranych klas biosocjalnych
    Damage zone and crown defoliation of Scots pine trees [Pinus sylvestris L.] of selected biosocial classes
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013425.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    uszkodzenia korony
    klasy Krafta
    sosna zwyczajna
    lesnictwo
    strefy uszkodzenia lasu
    Pinus sylvestris
    drzewa lesne
    scots pine
    defoliation
    damage zone
    biosocial classes
    Opis:
    In the year 2003, tree crown defoliation of Scots pine (Pinus sylvestris L.) of the 3rd and 4th age class was assessed on 90 test plots of 25 main crop trees each. This paper presents the analysis and assessment of the significance of differences of the mean tree crown defoliation of different Kraft classes growing in the same damage zones and the mean tree crown defoliation of the same Kraft classes growing in different damage zones (=0.05).
    Źródło:
    Sylwan; 2008, 152, 02; 20-25
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ stresu mechanicznego na wymianę gazową oraz wzrost roślin rzodkiewki zwyczajnej i rzepaku jarego
    Autorzy:
    Blamowski, Z. K.
    Michałek, W.
    Rukasz, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/11347128.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    defoliacja
    wymiana gazowa
    rzodkiewka
    wzrost roslin
    dekapitacja
    stres mechaniczny
    rzepak jary
    decapitation
    defoliation
    gas exchange
    mechanical stress
    plant growth
    radish
    spring rape
    Opis:
    Badano wpływ stresu mechanicznego (częściowej defoliacji lub defoliacji i dekapitacji pędu) na wymianę gazową oraz wzrost roślin rzodkiewki i rzepaku jarego będących w fazie rozety. Usuwanie starszych liści zwiększało intensywność transpiracji (E), ale nie miało wpływu na intensywność fotosyntezy netto (Pn). Dekapitacja pędu i defoliacja młodych liści nie wpływała na intensywność Pn rzodkiewki, ale bardzo silnie obniżała Pn roślin rzepaku. Stres zmieniał także wzór dystrybucji asymilatów. W roślinach rzodkiewki asymilaty translokowane były przede wszystkim do hypokotyla, natomiast u rzepaku wykorzystywane były na wzrost liści i korzeni. Uzyskane wyniki świadczą, że stres mechaniczny odgrywa ważną rolę w regulacji stosunku donory/akceptory asymilatów. Wpływa w ten sposób na przebieg wymiany gazowej, dystrybucję asymilatów oraz wzrost roślin. Wszystkie te procesy zależą dodatkowo od rodzaju (donor czy akceptor asymilatów) i wieku uszkodzonych organów oraz od gatunku roślin.
    The effect of mechanical stress (partial defoliation and/or shoot decapitation) were studied on gas exchanges and growth of radish and rapeseed plants. Removal of older leaves increased transpiration rate (E) but it didn’t have any influence on net photosynthesis rate (Pn). Shoot decapitation and defoliation of young leaves didn’t influence the Pn of radish but it greatly decreased photosynthesis rate of rapeseed plants. The stress also changed pattern of assimilates distribution and the organs’ growth. In radish plants photoassimilates were translocated to hypocotyls whereas in rapeseed they were mostly used for the growth of leaves and roots. It is concluded that mechanical stress plays important role in sink/source regulation. In this way it has an influence on gas exchange, biomass distribution and the growth of plants. That processes also depend on the types (donor or acceptor) and age of defected organs and plants cultivars.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2003, 02, 1; 3-11
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena zdrowotności dębu na podstawie stopnia ubytku aparatu asymilacyjnego wybranych drzewostanów dębowych Nadleśnictwa Wołów
    Assessment of the health condition of oak on the basis of the degree of assimilation apparatus losses in oak stands of the Wolow Forest District
    Autorzy:
    Szewczyk, W.
    Czeryba, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009254.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Nadlesnictwo Wolow
    drzewostany debowe
    drzewa lesne
    dab
    Quercus
    stan zdrowotny drzew
    aparat asymilacyjny
    defoliacja
    stopien defoliacji
    oak
    decline
    defoliation
    wołów forest district
    Opis:
    Distinct symptoms of oak decline, which occurred in the year 2004 on the area of the Wołów Forest District, prompted to determine the health condition of this species stands according to the European criteria i.e. on the basis of the defoliation degree. Oak stands in that area are exposed to the activity the Legnicko−Głogowski Copper Industry Region. Besides, the lowering of Odra riverbed, which in that area reaches 3 m, also exerts a significant effect on the functioning of the ecosystems. An estimation of the assimilation apparatus losses was carried out at the turn of July and August in 2005 and 2007 on the basis of an atlas elaborated by Borecki and Kęczyński [1992]. Data obtained in this way permitted to classify each tree into four defoliation classes from 0 to 3. In case of a dead tree, it was classified into the fifth class encoded as 4. In the first year of observation, the highest frequency (35.0%) was observed in defoliation class #2 i.e. in stands with medium damages. Class #1 included 33.6% of trees. The assessment was repeated two years later. The number of trees without defoliation symptoms decreased four times, while the number of trees with a strong defoliation and of dead trees increased.
    Źródło:
    Sylwan; 2010, 154, 02; 100-106
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Witalność drzewostanów dębowych w dolinie środkowej Odry uszkodzonych podczas powodzi w 1997 r.
    Vitality of oak stands in the central Odra valley damaged during flood in 1997
    Autorzy:
    Dobrowolska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016181.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    witalnosc
    drzewostany debowe
    dolina srodkowej Odry
    tereny popowodziowe
    Quercus robur
    lesnictwo
    dab szypulkowy
    drzewostany uszkodzone
    drzewa lesne
    quercus robur
    stand structure
    disturbances
    defoliation
    Opis:
    Oak stands are very important for Polish wood industry. The aim of the study was to know flood influence on the vitality of oak stands. The investigation of oak stands vitality was carried out in Miękinia, Wołów and Legnica Forest Districts in 2001−2002. Eight stands of different density were chosen. All of them were flooded in 1997 (except one in Legnica Forest District). It was found that flood increased the vitality of oak crowns. Healthy state of oak stands was better than in 90. The vitality of oak crowns increased and the defoliation decreased. It was found that the management system influenced the vitality of oak stands.
    Źródło:
    Sylwan; 2007, 151, 07; 39-48
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Typ siedliskowy lasu a defoliacja koron drzew sosny zwyczajnej (Pinus sylvestris L.) wybranych klas biosocjalnych
    Forest site type and crown defoliation of Scots pine trees [Pinus sylvestris L.] of selected biosocial classes
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013504.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    drzewostany sosnowe
    korony drzew
    klasy Krafta
    sosna zwyczajna
    typy siedliskowe lasu
    lesnictwo
    Pinus sylvestris
    drzewa lesne
    scots pine
    defoliation
    forest site type
    biosocial classes
    Opis:
    In the year 2003, tree crown defoliation of Scots pine (Pinus sylvestris L.) of the 3rd and 4th age class was assessed on 90 test plots of 25 main crop trees each. This paper presents the analysis and assessment of the significance of differences of the mean tree crown defoliation of different Kraft classes growing in the same site conditions and the mean tree crown defoliation of the same Kraft classes growing in different site conditions (=0.05). The following three forest site types were taken into consideration: fresh coniferous (Bśw), mixed fresh coniferous (BMśw) and fresh broad−leaved forest site types (LMśw).
    Źródło:
    Sylwan; 2008, 152, 03; 22-26
    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:
    Zaburzenia procesu kwitnienia i owocowania Aesculus hippocastanum L. jako efekt żerowania Cameraria ohridella Deschka and Dimić
    Impact of Cameraria ohridella Deschka and Dimic on the disruption of the flowering and fructification processes of Aesculus hippocastanum L.
    Autorzy:
    Franiel, I.
    Woźnica, P.
    Orlik, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/991138.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    szkodniki roslin
    owady minujace
    szrotowek kasztanowcowiaczek
    Cameraria ohridella
    oddzialywanie na rosliny
    drzewa
    kasztanowiec pospolity
    Aesculus hippocastanum
    defoliacja
    kwitnienie
    owocowanie
    horse chestnut leaf miner
    defoliation
    flowering
    fructification
    Opis:
    The paper presents the study on the impact of Cameraria ohridella on the percentage of leaf blade surface infested by insects, the number of functionally male and female flowers, as well as the germination energy of seeds. The research results show that the area of damage to the leaf may not affect the number of flowers, but it causes a decrease in the number of functionally female flowers as well as a decrease in fruit number and weight. Adhesive tapes with pheromone trap could help prevent greater leaf damage and lessened the disruption of the flowering and fructification processes.
    Źródło:
    Sylwan; 2014, 158, 01; 41-48
    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:
    Kryteria określania uszkodzenia świerka
    Criteria for assessment of the damage to Norway spruce
    Autorzy:
    Dmyterko, E.
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016245.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    uszkodzenia drzew
    stan wierzcholka drzewa
    zywotnosc
    Picea abies
    lesnictwo
    kryteria oceny
    swierk pospolity
    drzewa lesne
    criteria for assessment of the damage to trees
    defoliation
    vitality
    top condition
    norway spruce
    Opis:
    The paper presents the criteria for assessment of the damage to Norway spruce determined on the basis of its crown development. Three features were included: condition of the assimilation apparatus (feature A), condition of the tree−top (feature B) and tree vitality (feature C). Feature A is based on the defoliation. Feature B assesses the length of the last height increments and their branching models. Feature C includes the loss of branches in the middle part of the crown, the presence of branches of 2nd and higher orders as well as condition of proventive sprouts (developed from dormant buds). Determined criteria may be applied in the methods of assessment of the damage to stands and larger forest objects e.g. management region, forest region, nature−forest regions.
    Źródło:
    Sylwan; 2007, 151, 06; 12-23
    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:
    Metodyka oszacowania defoliacji Quercus robur L. na podstawie analizy reflektancji w zakresie 0,64-0,73 µm
    Methodology for estimating defoliation of Quercus robur L. on the basis of reflectance analysis in the range of 0.64-0.73 µm
    Autorzy:
    Kacprzak, Mariusz
    Kotlarz, Jan
    Kubiak, Katarzyna
    Rotchimmel, Karol
    Tkaczyk, Miłosz
    Powiązania:
    https://bibliotekanauki.pl/articles/884357.pdf
    Data publikacji:
    2018-02-28
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
    Tematy:
    lesnictwo
    drzewa lesne
    gatunki lasotworcze
    dab szypulkowy
    Quercus robur
    defoliacja
    metody badan
    teledetekcja
    zdjecia lotnicze
    analiza zdjec
    analiza reflektancji
    drzewostany debowe
    Plyta Krotoszynska
    defoliation
    remote sensing
    red edge
    Phytophtora
    PCA
    Opis:
    Ocena defoliacji koron jest użytecznym wskaźnikiem kondycji i żywotności drzew. W ramach projektu HESOFF podjęta została próba wypracowania metodyki oszacowania defoliacji drzewostanów dębu szypułkowego (Quercus robur) za pomocą analizy wielospektralnych zdjęć lotniczych wykonywanych z użyciem sześciokanałowej Platformy Wielosensorowej QUERCUS.6. Podczas cyklu wegetacyjnego (marzec-wrzesień 2015 r.) wykonane zostały zobrazowania lotnicze drzewostanów dębowych Płyty Krotoszyńskiej (zakres widzialny promieniowania elektromagnetycznego i bliska podczerwień). W badanych drzewostanach został oznaczony poziom defoliacji metodami terenowymi. Na podstawie fotografii wykonany został model wysokościowy pokrycia terenu oraz oznaczono niezacienioną część koron dębów. Dla 49 drzew o znanym poziomie defoliacji wykonano analizę PCA reflektancji uwzględniając odpowiednio oświetloną część ich koron, poziom defoliacji zmierzony in situ oraz model wysokościowy. Analiza wykazała silnie ujemną korelację poziomu defoliacji oraz reflektancji w kanale optycznym 0,73 µm. Na podstawie tej zależności zaproponowano metodę oszacowania defoliacji z wykorzystaniem zdjęć lotniczych.
    The assessment of tree crown defoliation is a useful indicator of the condition and viability of trees. As part of the HESOFF project, an attempt was made to develop a methodology for estimating defoliation of oak tree stands (Quercus robur) using multi-spectral aerial photographs acquired with the six-channel QUERCUS.6 Multisensor Platform. During the vegetation cycle (March- September 2015) aerial imaging of forests at the Krotoszyñska Plate was made (the visible range of electromagnetic radiation and near infrared). In the studied stands, the defoliation level was determined using traditional methods. The Digital Elevation Model (DEM) of the land cover was made on the basis of the photograph and next an unshaded part of the oaks crown was selected. For 49 trees with a known level of defoliation, a PCAanalysis of reflectance was performed taking into account the adequately illuminated part of crowns, the level of defoliation measured in situ and DEM. Analysis showed a strong negative correlation between the level of defoliation and a reflectance determined in optical channel 0.73 µm. On the basis of this relationship, a method for estimating defoliation by means of aerial photographs was proposed.
    Źródło:
    Technika Rolnicza Ogrodnicza Leśna; 2018, 1; 15-19
    1732-1719
    2719-4221
    Pojawia się w:
    Technika Rolnicza Ogrodnicza Leśna
    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:
    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:
    Stan zdrowotny drzewostanów sosnowych w Leśnym Zakładzie Doświadczalnym Murowana Goślina w latach 1992-2006
    Health condition of Scots pine stands in Murowana Goslina Experimental Forest Range in 1992-2006
    Autorzy:
    Beker, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1011743.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    defoliacja
    drzewostany sosnowe
    korony drzew
    dwutlenek siarki
    czynniki antropogeniczne
    stan zdrowotny lasu
    pyly
    lesnictwo
    zanieczyszczenia powietrza
    LZD Murowana Goslina
    imisja zanieczyszczen
    scots pine
    meteorological observation
    so2 imission
    dust fall
    defoliation
    health condition
    Opis:
    Technical and biological monitoring was started in early 1990s in the territory of the Murowana Goślina Experimental Forest Station. The permanent monitoring included weather conditions, levels of sulphur compound emissions and dust depositions, as well as changes in tree health using the bioindication method. The long−term studies were carried out on 14 permanent study sites located in pine stands in age classes II−V. This study presents the health condition of the tested stands in relation to the changes in the level of industrial emissions in the period 1992−2006.
    Źródło:
    Sylwan; 2009, 153, 08; 528-533
    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:
    The influence of explants type and orientation on growth and development of Mandevilla sanderi (Hemsl.) Woodson in vitro
    Autorzy:
    Kozak, D.
    Parzymies, M.
    Świstowska, A.
    Marcinek, B.
    Ismael, B.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12663898.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    Brazilian jasmine
    Mandevilla sanderi
    ornamental plant
    flowering plant
    pot plant
    commercial plant
    plant growth
    plant development
    plant regeneration
    explant type
    multiplication
    decapitation
    defoliation
    in vitro culture
    tissue culture
    cultivation experiment
    Opis:
    Mandevilla sanderi is an important commercial ornamental pot plant. Traditional vegetative propagation is limited due to the low rate, therefore there is a need to develop an alternative, more efficient method. There is an interest in development of micropropagation technology for the species, as it allows to obtain a lot of offsprings in a relatively short time. The aim of the present work was to estimate an influence of explants type and position on regeneration of Mandevilla sanderi in tissue culture. Four different types of explants (leafy shoot tips, decapitated leafy shoot tips, defoliated shoot tips, decapitated and defoliated shoot tips) were used in the experiment, which were placed on the media vertically, while defoliated shoot tips were placed horizontally or vertically upside down. The explants were cultivated on a Murashige and Skoog (MS) medium supplemented with 1 mg·dm–3 benzyladenine (BA) and 0.5 mg·dm–3 indole-3-butyric acid (IBA). It was noted that both explants orientation and positioning, influenced the multiplication rate. Defoliated shoot tips placed horizontally were characterized by higher multiplication rate (6.8) in comparison to upside down vertical positioning (3.2). It was also observed that removal of shoot apex improved axillary branching, while defoliation of shoots placed in a normal position reduced multiplication rate.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 111-119
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie Erysiphe alphitoides w drzewostanach dębowych dotkniętych klęską powodzi
    Occurence of Erysiphe alphitoides in oak stands affected by flood disaster
    Autorzy:
    Szewczyk, W.
    Kumiński, R.
    Mańka, M.
    Kwaśna, H.
    Łakomy, P.
    Baranowska-Wasilewska, M.
    Behnke-Borowczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312378.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany debowe
    drzewostany pokleskowe
    drzewostany popowodziowe
    dab szypulkowy
    Quercus robur
    choroby aparatu asymilacyjnego
    maczniak prawdziwy debu
    Erysiphe alphitoides
    wystepowanie
    defoliacja
    zamieranie drzew
    Nadlesnictwo Wolow
    defoliation
    branch tip withering
    oak decline
    Forest District Wołów
    Opis:
    Pedunculate oak (Quercus robur L.) is the most valuable deciduous tree species in Poland. For almost 30 years, an oak decline resulting from stress factors leading to a decrease of tree vitality in the long-term has been observed. The aim of the present study was to determine the proportion of leaves infected by the fungus Erysiphe alphitoides, the cause of powdery mildew, in post-flood oak stands situated in the Forest District Wołów (51°32’N, 16°62’E) as well as to evaluate effects of powdery mildew with respect to the oak decline. In order to record the powdery mildew incidence, we selected three trees in each of the ten investigated oak stands, and 200 leaves were collected from the upper part of the crowns. The percentage of infected leaves as well as the reduction of carbon assimilation capacity was assessed. Furthermore, we evaluated the average reduction of carbon assimilation capacity and the percentage of withering branch tips in 25 adjacent trees. Incidences of powdery mildew were observed in seven out of the ten stands. The maximum tree damage did not exceed 22% leaf infection and mean defoliation within the study areas ranged from 18% to 61.4%. Non-withering branch tips were observed in one post-flood area as well as in one area situated outside the flooded region. Within the remaining areas studied, the average proportion of withering branch tips ranged from 0.4% to 13.8%. Statistical analyses showed that differences between the investigated stands with regard to the rate of powdery mildew occurrence were not significant. Correlating the means, however, revealed a relationship between powdery mildew incidence and branch tip withering. This relationship is a possible indication of the ongoing oak dieback. No statistically significant relationship between tree defoliation and powdery mildew incidence was found. The lack of statistical significance, as observed here, implies that water stagnation within the investigated stands had no effect on Erysiphe alphitoides infection.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 1; 73-77
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    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
    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 kondycji modrzewia Larix decidua Mill. subsp. polonica (Racib.) Domin i innych gatunków drzew na Chełmowej Górze w Świętokrzyskim Parku Narodowym
    Assessment of the condition of Polish larch Larix decidua Mill. subsp. polonica (Racib.) Domin and other trees species on Chelmowa Gora in the Swietokrzyski National Park
    Autorzy:
    Podlaski, R.
    Żelezik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/994568.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Gory Swietokrzyskie
    parki narodowe
    Swietokrzyski Park Narodowy
    Chelmowa Gora
    rezerwat Chelmowa Gora
    drzewa lesne
    modrzew polski
    Larix polonica
    jodla pospolita
    Abies alba
    buk zwyczajny
    Fagus sylvatica
    sosna zwyczajna
    Pinus sylvestris
    dab bezszypulkowy
    Quercus petraea
    dab szypulkowy
    Quercus robur
    zdrowotnosc drzew
    defoliacja
    zywotnosc roslin
    larix decidua subsp. polonica
    defoliation
    vitality
    survey sampling
    świętokrzyski national park
    Opis:
    The objective of the study was to evaluate the health condition (defoliation) and vitality of Polish larch, fir, beech, pine and two native oak species growing on Chełmowa Góra in the Świętokrzyski National Park. Sample trees were selected using a survey sampling, simple random sampling without replacement (lpbz) and two−stage sampling (with lpbz on both stages) (l2s: I−lpbz, II−lpbz) were employed. The spatial distribution of the fractions of trees in defoliation and vitality classes in the stand allowed to categorize the examined species with regard to their health condition (from ‘best’ to ‘worst’) in the following order: Polish larch, beech, pine, oaks and fir (in the case of defoliation) and Polish larch, beech, pine, fir and oaks (for vitality). The estimation errors for the fractions of trees in defoliation and vitality classes ranged from 0.013 to 0.076.
    Źródło:
    Sylwan; 2012, 156, 03; 170-181
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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