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    Tytuł:
    Metoda inwentaryzacji lasu oparta na losowaniu warstwowym wykorzystująca model wzrostu drzewostanu
    Forest inventory method based on stratified sampling using a stand growth model
    Autorzy:
    Bruchwald, Arkadiusz
    Dmyterko, Elżbieta
    Mionskowski, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/18055687.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    miąższość drzewostanu
    próba
    ryzyko uszkodzenia
    model wzrostu drzewostanu
    stand volume
    sample
    damage risk
    stand growth model
    Opis:
    The paper presents a new variant of the method for determining the stand volume of age classes in a forest district or inspectorate (subdistrict). The methodological basis for this variant of the method is a branch of mathematical statistics called the "representative method", which is based on stratified sampling, similar to the variant of forest inventory currently used in forestry. In the new variant of the method, strata are formed based on the age of the main tree species and the stand volume, which is determined by the stand growth model, while in the variant currently used, strata are formed based on the stand's main tree species and its age. In the new variant of the stand volume determination method, 13 stages are distinguished, which can be divided into the initial and the main part. First, data from the State Forest Information System (SILP) database are processed: the age of the stand's main tree species and characteristics that allow to determine the volume of each stand of the forest district or inspectorate using a stand growth model. Based on the age and stand volume, strata for the forest district or inspectorate can be formed and the number of samples for each of these strata can be determined. The main part of the new variant of the method starts with the measurement of DBH and tree height on the sample plots. The results of these measurements are then processed using, for example, a stand growth model. The volume of individual strata, age classes, and the entire forest district is determined. When using a growth model, many other stand characteristics are also determined, including volume increment, degree of windthrow hazard, rotation, and 10-year size of final and intermediate fellings. The evaluation of the accuracy of the method was based on data from 73 forest inspectorates in Poland. This was preceded by studies on the dispersion measures of the sum of tree volume on sample plots of different sizes. The new variant of the forest inventory method proved to be about 30% more accurate than the previously used variant.
    Źródło:
    Leśne Prace Badawcze; 2023, 83; 25-32
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kwietnica okazała Protaetia speciosissima (Scopoli, 1786) (Coleoptera: Scarabaeidae) – chroniony gatunek saproksyliczny drzewostanów dębowych w Polsce
    Flower chafer Protaetia speciosissima (Scopoli, 1786) (Coleoptera: Scarabaeidae) – protected saproxylic species of oak stands in Poland
    Autorzy:
    Plewa, R.
    Hilszczański, J.
    Jaworski, T.
    Tarwacki, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312844.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    entomologia lesna
    drzewostany debowe
    owady saproksyliczne
    gatunki chronione
    kwietnica okazala
    Protaetia speciosissima
    wystepowanie
    saproxylic beetles
    oak stand
    forest strata
    yellow pan traps
    vertical distribution
    Opis:
    The paper presents the results of our studies on the preferences of the flower chafer, Protaetia speciosissima (Scopoli, 1786). The studies were carried out in 2009-2010 in the Forest Districts of Hajnówka, Krotoszyn, Łochów, Piñczów, and Puławy, located in various regions of Poland. Barrier traps consisting of a Moericke's trap and a Malaise's trap combined with a barrier of fine net were used to collect beetles. Traps were installed at two heights in over 100 years old oak stands, with the upper level in the canopy layer (mean height of 20.5 m) and the lower level adjacent to the tree trunk (mean height of 4,5 m). During two-year study, we collected a total of 328 specimens of P. speciosissima, 299 from the upper- and 29 from the lower forest layer. Thus, we confirmed strong preferences of the adult of P. speciosissima for the canopy layer in oak stands. Furthermore, our observations on phenology indicate that the second half of June and all of July are the months with the highest population density of P. speciosissima. This paper also proposes modes of action for conservation of the species.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 225-229
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena korytarzowej metody uprawy dębu (Quercus sp.) na przykładzie obiektów badawczych w nadleśnictwach Mircze i Kościan
    Evaluation of the corridor method for oak (Quercus sp.) cultivation using research objects in the Mircze and Koscian Forest Districts as an example
    Autorzy:
    Paluch, R.
    Gil, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292277.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    dab
    Quercus
    uprawa korytarzowa
    ocena hodowlana
    hodowla lasu
    odnowienia lasu
    Nadlesnictwo Mircze
    Nadlesnictwo Koscian
    oak
    corridor method
    oak cultivation
    forest regeneration
    stand tending
    Opis:
    The corridor method of oak (Quercus sp) cultivation is an old, forgotten silvicultural method. It was developed around the turn of the 19th and 20th century on the south-eastern borders of Poland (Podole, Wołyń) and Russia and made use of other species such as hornbeam, linden and birch as a cover for oak, which is a tree species sensitive to frosts. The nowadays recurring phenomenon of oak disease initiated a search for silvicultural alternatives and thus the usefulness of reviving the corridor method for oak regeneration was investigated by examining existing tree stands established in this way. Our research plots were located in five young stands and two in mature as well as old stands. In the stands of the 2nd and 3rd age classes, the density of oaks was observed to be 1500 - 3500 /ha, which accounted for 30-50%. The density of oak in old stands (7th age class) was similar to model-predicted values. Furthermore, the corridor method gave very good production results as exemplified by the oak stands growing on the fresh broadleaved site, which had a very high stand quality index. In addition, the species composition was observed to diversify throughout these oak stands’ development, thus supporting arguments for the conservation and preservation of oak-hornbeam forests. To summarise, the prerequisites for the success of the corridor method are systematic cuts of young stands (forest cultures and thickets) to inhibit the growth of accompanying undesired species and limiting the number of grazing animals.
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ wybranych elementów charakterystyki drzewostanów na intensywność występowania kornika drukarza Ips typographus (L.) w Beskidzie Żywieckim
    Impact of selected stand characteristics on the occurrence of the bark beetle Ips typographus (L.) in the Beskid Zywiecki Mountains
    Autorzy:
    Grodzki, W.
    Starzyk, J.R.
    Kosibowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317562.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Beskid Zywiecki
    siedliska lesne
    drzewostany
    miazszosc drzew
    wydzielanie sie posuszu
    szkodniki roslin
    kornik drukarz
    Ips typographus
    wystepowanie
    insect outbreak
    site
    stand characteristics
    spatial analysis
    Picea abies
    Opis:
    Recently, Norway spruce stands in Beskid ¯ywiecki (Western Carpathians) have been plagued by bark beetle outbreak affecting an extensive area over a large range of altitudes. Georeferenced data (2356 records) from 2009–2011 of the volume of felled spruces showing insect infestation in forest sub-compartments were analysed with respect to selected site and stand characteristics. The infestation intensity varied between individual parts of the examined area. Spruce mortality, recorded evenly across all slope expositions, was higher in the zones 800 m – 1000 m and above 1000 m than in the zone below 800 m. The infestation intensity increased slightly with spruce representation in the stands and was higher in stands older than 80 years. There was no clear correlation between spruce mortality and site quality. However, in areas with more diverse and fertile sites mortality was lower. In overall, the results obtained in this study are in line with previous knowledge on the subject, but patterns describing bark beetle preferences in infested areas appear to be less pronounced than those found in earlier publications. Risk assessment and current planning of forest protection measures in stands affected by bark beetle outbreaks should be based on the here described characteristics of spruce susceptibility to insect infection.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 159-169
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie metod szacowania pozyskaniowych szkód glebowych na przykładzie rębnego drzewostanu bukowego
    A comparison of methods to estimate harvest-induced damage to the soil using the example of a beech timber stand
    Autorzy:
    Kulak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312645.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany bukowe
    pozyskiwanie drewna
    ciecia rebne
    zrywka drewna
    szkody w lesie
    gleby lesne
    warstwa wierzchnia
    uszkodzenia gleby
    szacowanie szkod
    metody szacowania szkod
    logging damage
    indicators of soil damage
    beech timber stand
    agricultural tractor
    Opis:
    The study determines the extent of soil disturbances occurring during mechanised harvesting operations in a beech timber stand and investigates whether applying different research methods can be used to classify, in a comparable way, forest areas with different levels of soil damage. In the analysed stand, felling and on-site processing were conducted with chainsaws, while extracting – using an farm tractor. After the completion of logging operations, visible soil disturbances on each sample plot were measured, including their area, volume and depth, and the value of five most common indicators of soil damage was calculated. The share of disturbed surface area, the volume of soil disturbances and different soil damage indicators allowed sample plots to be arranged in the same way according to increasing levels of soil damage occurring during harvesting. A different order was observed only in relation to the depth of the ruts formed. The similarity of the applied measures and classifications of soil disturbances indicates that all of the methods can be applied to make simple comparisons of the degree of soil damage. Because field trials are easy to perform, soil damage indicators based on a visual assessment of soil condition, without the need to take measurements, are worth recommending at first. A fuller picture of the level and nature of detected soil damage, however, can be obtained by taking into account the depth of the disturbance.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 245-251
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stabilność adaptacji potomstwa buka zwyczajnego Fagus sylvatica L. po pięciu latach wzrostu
    Adaptation stability of European beech Fagus sylvatica L. after five years of growth
    Autorzy:
    Jaźwiński, J.
    Banach, J.
    Skrzyszewska, K.
    Strejczek-Jaźwińska, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1291347.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany bukowe
    wylaczone drzewostany nasienne
    buk zwyczajny
    Fagus sylvatica
    testowanie potomstwa
    przezywalnosc
    wysokosc
    odziedziczalnosc
    stabilnosc genotypu
    progeny testing
    selected seed stand
    survival
    height
    heritability
    genotype stability
    wyłączony drzewostan nasienny
    przeżywalność
    wysokość
    odziedziczalność
    stabilność genotypu
    Opis:
    This study was focused on the evaluation of beech adaptation on test plots in the Góra Śląska and Świebodzin Forest Districts. For this purpose, we examined offspring from seed stands of beech growing in the Regional Directorates of State Forests in Szczecin, Szczecinek, Piła, Zielona Góra and Poznań, which were brought to both test plots. The aim was to determine the adaptive response of the offspring from these stands after five years of growth with respect to the changed environmental conditions compared to the site of origin. Our analysis revealed a relatively low survival rate which was 60.8% and 72.2% in Góra Śląska and Świebodzin respectively. Interestingly, beeches grown on the plot in Góra Śląska were about 40% higher than those grown in Świebodzin (77.6 cm). The trees from both plots were significantly different from each other in terms of the analyzed features and a significant interaction was observed between test plot and site of origin. However, the variability in the adaptive response of the seedlings was large. Using a regression coefficient and the average height value, we determined the seedlings stability, which indicated high quality in offspring from the beech stand in the Łopuchówko Forest District (Buczyna forest range, sub-compartment 95n) and a high degree of adaptation to growth in adverse environmental conditions. Our results also indicate a low survival rate and reduced height of beech offspring from commercial seed stands (local standard).
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 2
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena żywotności drzew oraz biomasy i morfologii systemów korzeniowych sosny zwyczajnej (Pinus sylvestris L.) wzrastającej na zrekultywowanym składowisku odpadów po flotacji rud cynku i ołowiu
    Assessment of tree vitality, biomass and morphology of Scots pine (Pinus sylvestris L.) root systems growing on reclaimed landfill waste after zinc and lead flotation
    Autorzy:
    Pietrzykowski, M.
    Woś, B.
    Pająk, M.
    Likus-Cieślik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293705.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    odpady poflotacyjne
    skladowiska odpadow
    metale ciezkie
    skladowisko odpadow poflotacyjnych ZGH Boleslaw
    rekultywacja terenow
    rekultywacja lesna
    tereny zrekultywowane
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    zywotnosc drzew
    biomasa
    system korzeniowy
    budowa morfologiczna
    reforestation
    technosols
    stand
    belowground biomass
    heavy metals
    Opis:
    The stability of introduced stands depends not only on aboveground but also on the belowground biomass. Results from reclaimed sites often indicate good growth of the aboveground part of stands, but data on the development of root systems are still lacking. Our aim was to assess the vitality of trees, their biomass and the morphology of the root systems of Scots pine (Pinus sylvestris L.) introduced on reclaimed landfill waste after zinc and lead flotation in Bukowno (southern Poland). The landfill site was reclaimed 20 years ago and reclamation treatments involved isolation and covering with mineral substrate layers (110–150 cm thickness) which formed a technogenic soil profile. Four research plots (10×10m) were set up in pure pine stands where soil profiles consisted entirely of flotation waste. Trees on the plots were assayed according to the Kraft and IUFRO classification system. In total, 15 trees of average growth parameters and bio-sociological position (I and II Kraft class) were selected for biomass and root system analyses and the root systems were excavated, washed, measured, weighed and photographed. Our results support pine as a useful species in reforestation of post-mining areas. However, although pine trees were characterized by good vitality, their root systems were shallow and their depth reduced by up to 60 cm due to strong skeletal loamy substrate. Individual root biomass ranged from 1.2 to 9.1 kg and was comparable to pine root biomass on other reclaimed mining sites. This indicates that during restoration, the thickness of the substrate covering the flotation waste should be increased or the amount of skeletal substrate in the top layers of technosol reduced.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Do czego służą badania na stałych powierzchniach w Białowieskim Parku Narodowym?
    What is the use of studies carried out on the permanent plots in the Bialowieza National Park?
    Autorzy:
    Bobiec, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294369.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    ekologia lasu
    Bialowieski Park Narodowy
    lasy
    stale powierzchnie obserwacyjne
    badania naukowe
    ekosystemy lesne
    dynamika ekosystemow
    sukcesja naturalna
    szkodniki roslin
    kornik drukarz
    gradacja
    ecological disturbances
    ecological history
    plots’ representativeness
    spatial scale
    spruce bark beetle outbreak
    stand
    dynamics
    Opis:
    The purpose of the strictly protected area of the Białowieża National Park (BNP) established in early 1900s, was to protect a compact block of the Białowieża forest from any direct human influence and activity. Its founders considered it a “laboratory of nature.” In 1936, five rectangular plots with a total area of ca. 15.5 ha (ca. 0.3% of the BNP) were set up for regular monitoring of stand development with regards to the initial state and variability of soil conditions. During the first 76 years of the project, a steady increase in the proportion of hornbeam and lime tree at the expense of shade-intolerant species was observed. This trend has been interpreted by the researchers involved in the monitoring of the permanent BNP plots to constitute a biodiversity-threatening development caused by preservation efforts. Such an interpretation has been widely incorporated in the public debate by political authorities and the forestry sector. In this critical article I challenge the major arguments presented by the key expert in silviculture, prof. B. Brzeziecki. My criticism is directed at the methodological approach as well as at the data interpretation.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stan wielogatunkowego lasu naturalnego (Abies, Fagus, Picea) regla dolnego w rezerwacie Oszast na tle monokultur świerkowych w Beskidzie Żywieckim i Beskidzie Śląskim
    A comparison of lower montane natural forest (Abies, Fagus, Picea) in Oszast Reserve and spruce monocultures in the Zywiecki Beskid and Slaski Beskid
    Autorzy:
    Jaworski, A.
    Pach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1316186.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    lasy gorskie
    regiel dolny
    rezerwaty przyrody
    rezerwat Oszast
    las naturalny
    drzewostany wielogatunkowe
    sklad gatunkowy
    swierk pospolity
    Picea abies
    buk zwyczajny
    Fagus sylvatica
    jodla pospolita
    Abies alba
    klon jawor
    Acer pseudoplatanus
    jarzab pospolity
    Sorbus aucuparia
    zmiany skladu gatunkowego
    zasobnosc drzewostanu
    struktura drzewostanu
    rozklad piersnic
    smiertelnosc
    odnowienia lasu
    stand volume
    dbh distribution
    mortality
    regeneration
    Opis:
    The aim of this research was to find out what changes occurred between 1999-2009 in Oszast reserve in the volume, species composition and diameter at breast height (dbh) distribution of the forest stand, and the number and height of regeneration. The objective was to determine what would be condition of these managed lower montane multispecies forest stands (Swiss irregular shelterwood method or selection cuttings) and what role spruce would play in them if they have not been replaced by spruce monocultures. The research was conducted on three permanent circular sample plots (s.p.), each had size of 1/3 ha. Over 10 years, standing volume of the forest stand increased on s.p. 1 (from around 562 m3 ha-1 to 649 m3 ha-1) and s.p. 3. (from 653 m3 ha-1 to 660 m3 ha-1), while decreased on s.p. 2. (from 421 m3 ha-1 to 378 m3 ha-1). The species composition, defined on the basis of volume share (averaged for the three s.p. jointly), did not undergo consistent changes. However, the relative dominance of beech over spruce was determined based on tree numbers. The average spruce mortality (averaged from three s.p.) did not exceed 10% and was slightly higher than that of beech (6%), and lower than fir mortality (15%). Nevertheless, spruce did not show any symptoms of dieback. The reasons behind its mortality were fallen trees and windbreaks. In regeneration, on the whole, beech or sycamore predominated, and the proportion of spruce and fir was small. In the future spruce and fir may even decrease further by competitive ability of dynamically regenerating beech. Abandonment of forest management to promote greater diversity of species, may favour the formation of beech monocultures, or forest stands dominated by beech, everywhere that beech is already present or will be introduced. The maintenance of stable, multispecies forest stands, with co-dominant fir, beech and spruce of native origin, requires natural or artificial regeneration of spruce and fir, manipulated to restore fir up to about 30%, and reduce spruce down to about 40%. This would be possible through the use of the Swiss irregular shelterwood method and selection system, and by continuous tending of regeneration.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 1; 13-23
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elektrofizjologiczna charakterystyka krzewów podszytowych w lasostepie zachodniej Ukrainy
    Electrophysiological characteristics of undergrowth shrubs in the forest-steppe zone of western Ukraine
    Autorzy:
    Bondarenko, T.V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318169.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Ukraina
    lasostep
    podszyt
    krzewy
    leszczyna pospolita
    Corylus avellana
    trzmielina zwyczajna
    Euonymus europaeus
    trzmielina brodawkowata
    Euonymus verrucosus
    bez czarny
    Sambucus nigra
    deren swidwa
    Cornus sanguinea
    kruszyna pospolita
    Frangula alnus
    szaklak pospolity
    Rhamnus cathartica
    sliwa tarnina
    Prunus spinosa
    roza dzika
    Rosa canina
    kalina koralowa
    Viburnum opulus
    glog jednoszyjkowy
    Crataegus monogyna
    tawula
    Spirea
    tkanki roslinne
    parametry dielektryczne
    impedancja
    pojemnosc polaryzacyjna
    electrophysiological characteristics
    dielectric parameters
    understorey
    impedance
    polarization capacity
    shrubs
    stand density
    Opis:
    The article reviews the electrophysiological characteristics of pre-cambial phloem material in undergrowth shrubs. The electrophysiological properties of hazel (Corylus avellana L.), elder (Sambucus nigra L.) and other undergrowth shrubs are compared, as well as how these characteristics change depending on stand density indices. Differences in electrophysiological characteristics reveal the crucial role of light for the growth, development and persistence of undergrowth shrubs. I suggest that a quantitative assessment of electrophysiological characteristics should be undertaken when managing forest stands for the creation of desirable undergrowth.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 1; 13-16
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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