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    Wyświetlanie 1-21 z 21
    Tytuł:
    Wpływ wieku drzewostanu na dostępność pokarmu danieli
    Autorzy:
    Borkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178263.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    dostepnosc pokarmu
    daniel
    zwierzeta lowne
    lowiectwo
    drzewostany
    wiek drzewostanu
    lesnictwo
    fallow deer
    forest age
    food availability
    Opis:
    Influence of forest age on fallow deer food availability was studied in two localities in Poland. There were some differences between them, but in both cases pole−sized and mature stands were more abundant in food than the younger age classes. Fallow deer food availability was lowest in mature beech stands. Comparisons with other studies on this issue made in Poland showed that results are different depending on deer species considered. It comes from different food eaten by every species and abundance of various plants in forest age classes may follow different patterns. Besides, this study has shown that it is very hard to find general pattern of relation between forest age and deer food abundance for various regions, because this will depend on tree species dominating in the forest as well as forest management practices.
    Źródło:
    Sylwan; 2003, 147, 01; 88-95
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deforestation and its impacts on climate change an overview of Pakistan
    Autorzy:
    Ali, A.
    Riaz, S.
    Iqbal, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11968.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    climate change
    deforestation
    Pakistan
    catastrophic event
    forest age
    natural factor
    weather
    industrialization
    urbanization
    global temperature
    surface temperature
    disaster
    South Asia
    Opis:
    Forests are one the main natural factors that regulate and determine climate, weather patterns and amount of CO2 of an area. With rapid industrialization and rapid urbanization there is a significant increase in deforestation and as a consequence rise in global mean surface temperatures. Rapid and unchecked cut down of forest cover has resulted in some of the worst disasters during the last decades. This paper focuses on studying the role of deforestation, its influence on climate change phenomena and its consequences in Pakistan.
    Źródło:
    Papers on Global Change; 2014, 21
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamika i główne kierunki zmian w drzewostanach zagospodarowanej części Puszczy Białowieskiej
    Dynamics and main direction of change in forest stands constituting the managed part of Bialowieza Forest
    Autorzy:
    Bruchwald, A.
    Dmyterko, E.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985942.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany gospodarcze
    dynamika drzewostanu
    siedliska lesne
    struktura drzewostanu
    sklad gatunkowy
    struktura wiekowa
    miazszosc drzewostanow
    przyrost miazszosci
    abiotic and biotic threats
    forest age structure
    low−productivity stands
    stand productivity
    stand volume
    stand stability
    species composition
    wind risk model
    Opis:
    The paper describes current (in years 2007−2017) changes of basic parameters of forest stands that constitute the managed part of Białowieża Forest (ca. 53,000 ha), divided into three forest districts: Białowieża (12,600 ha), Hajnówka (19,700 ha) and Browsk (20,400 ha). The investigated tree stands represent different phases of ecological succession, modified by silvicultural treatments and other human activities. The course of the succession processes is varied, depending, first of all, on local site conditions, consisting mainly of fresh sites (ca. 60%) – particularly fresh broadleaved forest, and encompassing exceptionally high fraction of wet and swamp sites (40%) – especially wet broadleaved forest site type. Most stands represent the intermediate, highly productive phase of succession, with spruce and oak as the dominant tree species. In particular, such stands are common in Białowieża and Hajnówka forest districts. Recently, the share of the mentioned stands is declining, most intensely in the Browsk Forest District. In 2017 alone, 430 ha of highly productive forest stands disappeared from the Białowieża Forest. The process of decay involved mixed stands; besides of spruces which were killed by a current bark beetle infestation, also many oaks, pines, birches, alders as well as rare and valuable minor tree species (such as ashes and maples) died. Dying spruce and, more often, oak stands are often replaced by low−productive hornbeam trees, occupying earlier lower stand strata in such stands. The resulting hornbeam stands are often distinguished by low crown closure and low productivity. Tree stands occurring in the Białowieża Forest are among the most endangered by wind damage stands in Poland. It means that in case of strong winds, several trees will be broken and/or uprooted. The intensity of such phenomena will be further increased by the high tree volume of stands as well as by the presence of many gaps in forest canopy, caused by a massive mortality of spruce trees. In general, one may expect that in the nearest future many stands occurring in the Białowieża Forest, built by different tree species, will be subject to a massive decay. The list of factors contributing to this process is long and involves, among other things, recurring droughts during the growing season, unfavorable changes in ground water table and increased frequency of strong winds. All these factors negatively influence the health status of trees, which further favours the development of parasitic fungi and insects. In consequence, there is a high probability that many areas in the Białowieża Forest will, for a long time, retain a treeless character and/or will be occupied by low−productive and single species hornbeam stands.
    Źródło:
    Sylwan; 2018, 162, 11; 897-906
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Экологические характеристики возрастных рядов культуры и насаждений естественного происхождения сосняков мшистых в заказнике «Гродненская Пуща»
    Ecological characteristics of the age series of culture and natural origin plantations of mossy pine forests in the reserve “Grodnenskaya Pushcha”
    Autorzy:
    Ивановна Садковская, Анна
    Викторович Созинов, Олег
    Powiązania:
    https://bibliotekanauki.pl/chapters/31342664.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    age range of tree-stands
    environmental factors
    Grodno Forest
    mossy pine forest
    ordination
    Pinetum pleuroziosum
    reserve
    Opis:
    The studies were carried out in 2019 on the territory of the landscape reserve Grodnenskaya Pushcha (Grodno region, Belarus) in which 26 natural and artificial communities of pine forests with mosses (Pinetum pleuroziosum) were studied on a age range from 5 to 113 years, using the trial plot method (400 m 2). Phytoindication of ecological regimes on the scales proposed by H. Ellenberg showed a tendency to decrease illumination, moisture, and trophy and an increase in acidity in the age range of pine forests with mosses. The ecological interpretation of the components (the Principal Component Analysis) of the studied pine forest communities showed that the main factors responsible for the formation of the time series of natural and artificial pine forests with mosses are forestry activities, illumination regime, and soil trophy.
    Źródło:
    Lasy przyszłości. Wyzwania współczesnego leśnictwa; 89-99
    9788367185462
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic site index model and trends in changes of site productivity for Alnus glutinosa (L.) Gaertn. in southern Poland
    Autorzy:
    Socha, Jarosław
    Ochał, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/956987.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    height growth model
    height-age relationship
    forest site
    evaluating site productivity
    alder
    Opis:
    Black alder is naturally widespread across all of Europe and has an increasing importance for forest ecosystems. Thanks to the considerable tolerance to adverse climatic and edaphic environmental conditions black alder is important both in open landscapes and can also be involved in the rehabilitation of disturbed soils. Assessment of site productivity is essential for providing a frame of reference for silvicultural diagnosis and prescription in order to ensure the sustainability of existing and newly established ecosystems. The most accepted method of evaluating site productivity is the site index (SI). The aim of the presented research was to develop the SI model for black alder in southern Poland. The developed SI model was used as a tool in order to test the research hypothesis assuming the increase in site productivity for black alder in southern Poland. The research material for development of SI model were stem analysis data from 180 research plots. Both, the local model parameter, which was estimated individually for every tree, and the other parameters estimated globally for the whole data set were estimated simultaneously. Changes in site productivity were analyzed on research plots and a set of 12,974 stands from the forest inventory database. Site indices calculated using the developed model are negatively correlated with age/ positively correlated with establishment year of the stands. This confirms the existence of the phenomenon of increasing site productivity for black alder. During the last century site productivity measured with site index increased on average 5 m. Therefore, black alder that belongs to the fast-growing tree species should be considered of the increasing importance for forest management.
    Źródło:
    Dendrobiology; 2017, 77; 45-57
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The formation and structure of clones of forest herbs in ecosystem of north-eastern Ukraine
    Autorzy:
    Kovalenko, I. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/100506.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
    Tematy:
    forest herbs
    population
    clone
    partial bush
    age state
    zioło leśne
    populacja
    kopia
    Opis:
    The clonal structure of forest herbs of north-eastern Ukraine, such as Aegopodium podagraria L., Asarum europaeum L., Carex pilosa Scop., Stellaria holostea L., has been examined using the total mapping method. The regularities of changes within the radii of clones, density of partial bushes and their age have been found out. The author has suggested an original statistical and graphical method which allows to estimate age state of each clone and make its land zoning.
    Źródło:
    Geomatics, Landmanagement and Landscape; 2016, 2; 61-76
    2300-1496
    Pojawia się w:
    Geomatics, Landmanagement and Landscape
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the relations between burial types and a level of development of the society
    Autorzy:
    Grechko, Denis S.
    Powiązania:
    https://bibliotekanauki.pl/articles/567516.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
    Tematy:
    East European Forest-Steppe
    Bronze Age
    Scythian period
    funeral ceremony
    human burials
    exposure
    Opis:
    There are main forms of the funeral ceremony of indigenous population of Central and East European Forest-Steppe of the Bronze Age and the Scythian period which have been marked out in the article. The ways of treating the dead were different. The body could be buried in the ground and burial mounds within the territory of settlements (in household buildings and special graves). The bones of dead could be left in the settlement area on exposure. The forest-steppe population followed a tradition of forefathers which was expressed in worship of human remains.
    Źródło:
    Materiały i Sprawozdania Rzeszowskiego Ośrodka Archeologicznego; 2017, 38; 101-109
    0137-5725
    Pojawia się w:
    Materiały i Sprawozdania Rzeszowskiego Ośrodka Archeologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nietoperze w Puszczy Niepołomickiej
    Bats in Niepolomicka Forest
    Autorzy:
    Wojciuch-Płoskonka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/985679.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    fauna
    nietoperze
    Chiroptera
    sklad gatunkowy
    Puszcza Niepolomicka
    bats
    forest types
    age class
    echolocation
    Opis:
    The objective of the study was to recognise the species composition of bats in two forest stands that differ in terms of habitat type and age class. The study was carried out in the Niepołomicka Forest (southern Poland). An ultrasound ‘time−expansion’ processing system with Pettersson D240× detector was used to identify bat species by their echolocation signals employing SonoBat v.2.9.7 software to analyse bioacoustic spectrograms. We set up 36 recording points located in: old−growth and young plantations within the hygric mixed coniferous forest type (Pino−Quercetum) and hygric deciduous forest type (Tilio−Carpinetum). The measurements were carried out in July 2013, from 8:30 PM to 0.00 AM. The occurrence of nine species of bats were documented (tab.) of which Pipistrellus pygmaeus, P. pipistrellus, Barbastella barbastellus, Myotis myotis, M. emarginatus, and M. daubentonii had not been previously recorded in the Niepołomicka Forest. P. pipistrellus, M. emarginatus, M. daubentonii, and E. serotinus were recorded only in old−growths, whereas Nyctalus leisleri, N. noctula, and P. pygmaeus were found within both habitat types. Only two of the species identified in the study (M. myotis, and B. barbastellus) occurred both in the plantations and old−growth of hygric deciduous forest as well as in hygric mixed coniferous forest. None of the detected species was recorded exclusively in old−growth of hygric mixed coniferous forest type. The occurrence of a given bat species in the studied forest habitats and age classes of forest stands can be associated with the availability of prey, divergent feeding strategies, and with the adaptations affecting the nature of flight and ways of locating prey. The obtained results widened the knowledge of the species composition of bat fauna in the Niepołomicka Forest. At least 13 bat species live here. Apart from the nine species found in this study, four other species were found there in past years (Plecotus auritus, M. bechsteinii, M. brandtii and M. mystacinus).
    Źródło:
    Sylwan; 2019, 163, 04; 348-352
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost różnorodności gatunkowej chrobotków jako efekt rębni zupełnej na ubogich siedliskach borowych
    Increase of Cladonia species diversity as a consequence of clear-cutting in nutrient-poor forest sites
    Autorzy:
    Stefańska-Krzaczek, E.
    Faltynowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/994072.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    siedliska borowe
    siedliska oligotroficzne
    rebnie zupelne
    drzewostany sosnowe
    chrobotek
    Cladonia
    wystepowanie
    roznorodnosc gatunkowa
    scots pine forest
    managed forest
    ground lichens
    stand age classes
    Opis:
    Clear−cutting impacts site conditions seriously. However, in nutrient−poor sites the effects of stand removal can be minor than in nutrient−rich sites. The aim of this work was to assess whether the clear−cut can improve species diversity of ground Cladonia species, which decline has been observed in forest communities. In stands of different age classes (≤10, 11−20, 21−40, 41−60, 61−80, ≥81 years) in the Przymuszewo Forest District (northern Poland) ground Cladonia species and their cover were recorded on research plots (10×15 m). A total of 24 species were identified in the study area. There were more Cladonia species and they were more abundant in young stands (<20 years old) than in stands older than 60 years. Nine species are significantly more frequent and demonstrated high fidelity in young stands and only one was characteristic for old stands. Composition of Cladonia species depended primarily on stand age and subsequently on canopy or bryophyte cover. In nutrient−poor sites clear−cutting is favourable for Cladonia species diversity.
    Źródło:
    Sylwan; 2013, 157, 12; 929-936
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ekonomiczny wiek rębności drzewostanów sosnowych
    Economic rotation age of Scots pine stands
    Autorzy:
    Piekutin, J.
    Skręta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008788.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    gospodarka lesna
    drzewostany sosnowe
    wiek rebnosci
    ekonomiczny wiek rebnosci
    economic rotation age
    value of forest stand
    Opis:
    The determination of the best rotation age for trees and forest stands is one of the most decisive problems in forestry. It results from different aims of forest management. There are many criteria of selecting the product of forest utilization and deciding about stand maturity. They can be divided into biological, technical and economical ones. The most common are usually based on the rules of forest management. Different rotation age for the stand, dependent on various factors, always influences economical balance between bore costs and achieved income. Article presents the method of defining the economical rotation age based on the maximization of the income.
    Źródło:
    Sylwan; 2012, 156, 10; 741-749
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The state of bioelements in the hair of free-ranging European bisons from Białowieża Primeval Forest
    Autorzy:
    Kosla, T.
    Skibniewska, E.
    Skibniewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/30717.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bialowieza Forest
    Polska
    European bison
    bioelement content
    bison
    hair
    animal age
    age
    gender
    animal hair
    animal organism
    hair sample
    phosphorus content
    magnesium content
    titanium content
    vanadium content
    Opis:
    Human or animal hair is considered to be a good indicator of the content of bioelements or toxic elements in human and animal organism. Its analysis is a good alternative for the arduous obtaining blood or biopsy samples. The aim of the performed research was the assessment of some chosen bioelements in the organism of European bison on the basis of their analysis in hair. The investigation material comprised hair samples obtained from 22 animals. All animals were divided into groups according to gender (males, females) and age (calves up to one year of age and animals older than 2 years). Samples were mineralized in nitric acid, under pressure in the microwave apparatus. The content of phosphorus, sulphur, magnesium, iron, titanium and vanadium were determined in hair samples. The content of these elements was determined using the ICP-AES method in accredited laboratory. The accuracy of determinations was tested using the standard reference material. The mean content of phosphorus in hair amounted to 245.14 mg · kg–1, SD 65.00, magnesium 97.32 mg · kg–1, SD 33.16, iron 119.48 mg · kg–1, SD 83.31 and titanium 2.368 mg · kg–1, SD 2.097. In case of these elements, differences depending on gender and age were statistically insignificant. Mean content of sulphur in the European bison hair amounted to 3.41% with equalized content in the herd (SD 0.22%). Here also statistically insignificant differences depending on gender were observed. However, a statistically significant difference (p ≤ 0,05) was demonstrated which depended on animal age. Mature European bisons had more sulphur in hair as compared to calves. The concentration of vanadium (0.362 mg · kg–1, SD 0.396 on the average) significantly differed in hair depending on the European bison age with much higher values in adult animals (calves 0.260 mg · kg–1, animals older than 2 years 0.686 mg · kg–1). Similar data were obtained while investigating hair of sea mammals.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement and evaluation of timber yields and corresponding non-timber forest products of selected tree species. An exploratory study on poplar, Acacia, Ulmus and Juglans tree species in Kyrgyzstan
    Autorzy:
    Agbenowu, Y.I.S.
    Attah, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049706.pdf
    Data publikacji:
    2018
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    forest zone
    Kirgizstan
    timber yield
    wood measurement
    evaluation
    poplar
    Acacia
    Ulmus
    Juglans
    biomass
    volume
    net present value
    growth yield
    rotation age
    Opis:
    With issues of high timber demand and illegal logging in the forest zones of Kyrgyzstan, agroforestry may serve as a viable option for rectification. Yields of timber and expected income from the most popular tree species are in most cases lacking. The goal of this study is to evaluate the timber yields and non-timber forest product from Ulmus, Poplar, Acacia and Juglans tree species in Kyrgyzstan. More focus was allocated to Poplar as this is one of the most common and preferred tree species in Kyrgyzstan. A sample size of 420 trees was recorded from 18 stands with 20 trees measured in each stand with the exception of Juglans which were 6 stands with 9-17 trees each The study estimated (i) tree volume using allometric parameters (ii) age-biomass relationship (iii) Factual Branch Analysis model to estimate the above ground biomass of the different tree segments (iii) revenue deduction and NPV of Poplar trees and (iv) biological rotation Age to determine the suitable age for Poplar harvesting. The findings show that NPV is highest at 10 years for Poplar when it is being considered for fast-growing timber. The biological rotation age was, however, higher at around 17 years. Site-specific age-biomass model appears to be suitable for estimating tree biomass since the tree allometry was found to differ significantly between studied stands even with similar age ranges. The developed relationship and tree database can adequately be applied to estimate tree volume and biomass in similar site conditions in the studied region.
    Źródło:
    Environment, Earth and Ecology; 2018, 2, 1; 12-27
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dendrochronological studies of Juniperus communis dying out population in the "Jalowce" reserve (Pomerania)
    Autorzy:
    Cedro, A
    Wrobel, M.
    Jurzyk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/41065.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    dendrochronology
    juniper
    Juniperus communis
    population
    meteorological condition
    tree ring width
    Jalowce reserve
    Pomeranian region
    Polska
    forest nature reserve
    plant age
    tree
    Opis:
    The aim of undertaken research was recognition the reasons of dying out the common juniper Juniperus communis L. ssp. communis population in the forest nature reserve “Jałowce” (Pomerania). Applied methods of dendrochronological analysis let to determine the age of juniper-stand in the reserve and describe the influence of climatic conditions on its growth. Obtained results testify to Juniperus communis chronology with signature WIE collected from 17 individual sequences which numbered 102 tree ring width and represented a time span 1903 to 2004. Such results described the juniper-stand in the reserve as ageing population with the oldest specimen at age 98 years. However, the last several years were characterised by the lack of strong growth depressions typical for earlier time periods with tree ring width ranged 0.7–1.0 mm (themean annual tree ring width amounted to 0.85 mm), but the visible symptoms of degeneration and dying out of protected common juniper population intensified probably because of its age.
    Źródło:
    Dendrobiology; 2007, 58; 17-23
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sustainability of Picea abies of Istebna provenance in Dupniański Stream catchment as dependent on stand age class
    Autorzy:
    Malek, S
    Powiązania:
    https://bibliotekanauki.pl/articles/41396.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    international conference
    Europe
    forest ecosystem
    plant breeding
    tree
    Norway spruce
    Picea abies
    sustainability
    provenance
    Dupnianski Stream catchment
    stand age class
    Silesian Beskids Mountains
    Polska
    Opis:
    Ecochemical indexes such as soil buffer reaction (pH), acid neutralising capacity (ANCaq), alkalinity (ALK), soil acidity (Ma%), basic cation saturation (BS), and molar ratios Ca:Al and BC:Al were used to study the sustainability of Norway spruce of Istebna provenance in stands differing in age class. The data were obtained from the research conducted in the Dupniański Stream catchment in the Silesian Beskid Mts. (Poland). The acid neutralising capacity, alkalinity, and soil acidity were found to depend on the age of spruce stands. The increased acidification of deposits was due to the presence of sulphate and nitrate ions which were washed out from the surface of plants. Passing through the canopy caused a decrease in the acid neutralising capacity, alkalinity, and base cation saturation, and an increase in the soil acidity, with the values being dependent on stand age. The soil acid reaction shifted to the range of the aluminium and iron bufferness, but the Ca:Al and BC:Al ratios were still above the level when aluminium stress is probable. The washout of the basic cations beyond the spruce root system, and the low levels of exchangeable Mg2+ and Ca2+, basic cation saturation of soil water, and effective base saturation of soil may affect the vitality and health of spruce stands in the future. To maintain the sustainability of Norway spruce stands of Istebna provenance in the Dupniański Stream catchment it is necessary to increase the retention of basic elements, especially Mg2+ and Ca2+, by means of stand conversion or fertilisation.
    Źródło:
    Dendrobiology; 2009, 61 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie metody litologicznej do weryfikacji rezultatów nieinwazyjnych badań kurhanów z epoki brązu na pograniczu śląsko-wielkopolskim (Las Krotoszyn, Wielkopolska)
    Use of the lithological method in verifying results of non-invasive surveys of the Bronze Age barrow mounds on the Silesia and Wielkopolska borderland (Krotoszyn Forest, Wielkopolska)
    Autorzy:
    Hildebrandt-Radke, Iwona
    Mateusz, Stróżyk
    Czebreszuk, Janusz
    Jaeger, Mateusz
    Pospieszny, Łukasz
    Cwaliński, Mateusz
    Niebieszczański, Jakub
    Rotnicka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/578286.pdf
    Data publikacji:
    2018
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    kurhany
    lotniczy skaning laserowy (ALS)
    prospekcja magnetometryczna
    metoda litologiczna
    epoka brązu
    Las Krotoszyn
    barrow mounds
    Airborne Laser Scanning (ALS)
    magnetometry prospection
    lithological methods
    Bronze Age
    Krotoszyn Forest
    Opis:
    Upowszechnienie się w archeologii metod nieinwazyjnych umożliwiło w znacznie większej skali badania obszarów leśnych. W badaniach cmentarzysk kurhanowych położonych na Wale Krotoszyńskim (Las Krotoszyn), w celu rozpoznania morfometrycznego cmentarzyska kurhanowego i identyfikacji kopców, które weryfikowano dodatkowo w terenie, zastosowano metody lotniczego skaningu laserowego do wykonania numerycznego modelu terenu. Wykonanie prospekcji magnetometrycznej, na podstawie oceny zróżnicowania anomalii magnetycznych, dało możliwość uchwycenia złożonej struktury wewnętrznej badanych kurhanów. Wyniki magnetometrii weryfikowane były poprzez odwierty geologiczne w miejscach występowania anomalii magnetycznych w obrębie kurhanu, a pobrany z nich materiał poddano badaniom litologicznym oraz analizie podatności magnetycznej.
    The spread of non-invasive methods in archaeology made it possible to study forest areas. In the study of barrow cemeteries located on the Krotoszyn Ridge (Krotoszyn Forest), aerial laser scanning methods were used to implement a numerical terrain model for morphometric recognition and identification of burial mounds, which were additionally verified in the field. Magnetometric prospection made it possible to study the complex internal structure of the studied mounds on the basis of the diversity of magnetic anomalies. The verification of the geomagnetic surveys was based on geological drillings in the places with the largest magnetic anomalies within the burial mounds; the material collected from them was subjected to lithological tests and analysis of magnetic susceptibility.
    Źródło:
    Acta Geographica Lodziensia; 2018, 107; 73-92
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wartość rekreacyjnej funkcji lasu w świetle wyników ogólnopolskiego badania opinii społecznej
    Value of leisure-related function of forest in view of the results of nationwide survey in Poland
    Autorzy:
    Skłodowski, J.
    Gołos, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989348.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    funkcje lasu
    funkcje rekreacyjne
    wartosc rekreacyjna
    hipotetyczna gotowosc finansowania
    opinia spoleczna
    badania ankietowe
    ce method
    wtp
    education
    age
    respondents' financial situation
    forest management for tourist purposes
    Opis:
    Driven by social and economic changes, which have taken place for the last 30 years, the European forest management objectives have been redefined. By the action of public opinion, forest management, increasingly frequently and in a broader range, focuses on public benefits from forests. One of the most important functions is the possibility of leisure and recreation in the forest. The purpose of the research was the analysis of the hypothetical readiness to finance the leisure−related function of forest based on WTP (Willingness To Pay) amount. A question, which enabled the assessment of a social value of leisure−related function of forest, was asked to a random−quota sample of 1000 people over 18 years of age during the nationwide survey carried out in 2013 by TNS Polska. Out of 1000 respondents, the WTP>0 was declared by 29% respondents. Surveyed persons indicating forest with poorer infrastructure declared higher values calculated per household (PLN 13.59 ±0.84) than respondents who selected a better managed forest (PLN 12.86 ±0.88, PLN 12.91 ±1.46). The average WTP amount per person for respondents with the university degree (bachelor and master degree) was PLN 6.23 ±0.48, whereas for respondents with lower education, it was on the level of PLN 5.26 ±0.25. The average WTP also depended on the age of respondents. It was PLN 11.42 ±1.43 for 20−year−olds per family, whereas for 40−year−olds it was PLN 14.16 ±1.05. The average WTP per person increased along with the age of respondents; from PLN 4.37 ±0,42 (20−year−olds) to PLN 6.00 ±1.11 (80−year−olds). Disregarding the top WTP value per household of respondents in the worst financial situation (20.00 ±10.00), the average WTP value per household increased from PLN 10.26 ±1.69 (in poor financial situation) to PLN 14.55 ±2.97 (very well−off).
    Źródło:
    Sylwan; 2016, 160, 09; 759-766
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena metod i zasad gospodarowania w Lasach Państwowych w minionym dwudziestoleciu
    Evaluation of the methods and principles of forest management in the State Forests in the past two decades
    Autorzy:
    Poznański, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/991592.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    gospodarka lesna
    gospodarka zrownowazona
    lasy gospodarcze
    lasy ochronne
    uzytkowanie rebne
    uzytkowanie przedrebne
    wiek rebnosci
    regulacja uzytkowania rebnego
    rotation age
    allowable cut
    cut determination by silvicultural needs
    forest management planning
    location of cutting sites
    ecological forest management
    Opis:
    The adopted rotation age and prescribed cut are found not to be fully respected at any stage of regulation, planning and implementation of cutting plans. As a result, timber, the main crop in forestry, is not uniform in terms of rotation age and fails the adopted criteria of crop maturity. Protective forests are not subject to management unless cut determination derives from silvicultural needs, without specifying the criteria for these needs. The level of cuts subjectively determined by quality control inspectors is not respected in forest management practice and should be recommended for use in the forests administered by the State Forests.
    Źródło:
    Sylwan; 2013, 157, 04; 298-305
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The population structure and regeneration of Sorbus torminalis in Hadecka planinka National Nature Reserve (Czech Republic)
    Autorzy:
    Madera, P.
    Kohoutek, M.
    Senfeldr, M.
    Repka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41463.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    population structure
    regeneration
    Sorbus torminalis
    wild service tree
    age structure
    forest system
    species protection
    chequer tree zob.wild service tree
    checker tree zob.wild service tree
    Hadecka Planinka National Nature Reserve
    Czech Republic
    Opis:
    We performed a detailed overall field survey of all specimens of the wild service tree Sorbus torminalis (L.) Crantz in the research area in the Hádecká planinka National Nature Reserve. This research area, with an area of 80 ha, contains one of the largest populations of the tree in Europe. In all, 1713 specimens were found. This study provides a detailed description of the wild service tree population in the area. The basic biometric parameters (height, GBH, social position, fertility) of thepopulation were assessed. The main emphasis of our analysis was to evaluate the population's age structure. We used estimates of age structure based on the Chapman-Richards growth function to perform this evaluation. During the past twenty years, the natural regeneration of the wild service tree in the nature reserve has decreased considerably. At an experimental plot where a high forest was converted to a coppice with standards, regeneration occurred over 75% of the area. Root suckers were found at the beginning of the observation period. After 2–3 years, generative regeneration occurred.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring cetyńców (Tomicus sp.) w różnych typach siedliskowych lasu
    Monitoring of pine−shoot beetles (Tomicus sp.) in different forest habitat types
    Autorzy:
    Lesniak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973063.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Tomicus piniperda
    bonitacja siedliska
    cetyniec mniejszy
    lesnictwo
    drzewostany sosnowe
    klasy wieku
    owady
    Tomicus minor
    monitoring
    typy siedliskowe lasu
    szkodniki roślin
    entomologia leśna
    cytniec większy
    pine−shoot beetle (tomicus sp.)
    forest habitat type
    age class
    bonitet class
    Opis:
    The paper synthesises results from the study on pine−shoot beetles occurring in 10 types of forest habitat in seven forest districts of central Poland. The paper provides assessment of three methods for collecting insect−induced needle drop, as well as its quantities in age and bonitet classes in pure and mixed pine stands.
    Źródło:
    Sylwan; 2003, 147, 11; 61-67
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Smukłość modrzewia europejskiego (Larix decidua Mill.) i jej związki z innymi cechami biometrycznymi
    Slenderness of European larch (Larix decidua Mill.) and its relationships to other biometric parameters
    Autorzy:
    Kaźmierczak, K.
    Nawrot, M.
    Pazdrowski, W.
    Jędraszak, A.
    Najgrakowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/994964.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    dendrometria
    drzewa lesne
    siedliska lesne
    modrzew europejski
    Larix decidua
    smuklosc drzew
    wiek drzew
    piersnice drzew
    wysokosc drzew
    powierzchnia rzutu korony
    srednica korony
    dlugosc korony
    korelacja cech
    larch
    slenderness
    age
    forest habitat type
    tree growth area
    crown projection area
    Opis:
    The study presents the relationships between larch slenderness and age, breast height diameter, height, crown width, crown projection area, crown length and habitat type. The study comprised larch trees in a dominant stand of different age classes growing in fresh mixed coniferous (BMśw), fresh mixed deciduous (LMśw) and fresh deciduous (Lśw) forest habitats. The slenderness of each larch was calculated as the ratio of tree height to breast height diameter. The crown projection area was calculated as a circle with a radius equal to the average radius of the crown. The average crown radius was established after its projection in the four main geographical directions. The crown length was calculated as the difference between the height of a tree and the height of crown location. Also an attempt was made to describe tree slenderness using multiple regression equations.
    Źródło:
    Sylwan; 2012, 156, 02; 83-88
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozpad drzewostanów świerkowych w Beskidzie Żywieckim
    Dieback of Norway spruce stands in the Beskid Zywiecki Mts.
    Autorzy:
    Dmyterko, E.
    Bruchwald, A.
    Mionskowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/979601.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Beskid Zywiecki
    drzewostany swierkowe
    rozpad drzewostanow
    swierk pospolity
    Picea abies
    struktura drzewostanu
    struktura wiekowa
    struktura gatunkowa
    pozyskiwanie drewna
    struktura pozyskania
    zagrozenia lasu
    wiatry
    szkody od wiatru
    forest dieback
    picea abies
    species structure
    age structure
    timber harvest
    threat to forests by wind
    Opis:
    In the Beskid Żywiecki, the combination of abiotic, biotic and anthropogenic factors unfavourable for the growth of trees led to the dieback of spruce stands. The intensification of this process began after the hurricane in November 2004, followed by years of negative climatic water balance. The deterioration of tree growth conditions occurred after the drought in July 2006 and damage caused by the Kyril hurricane in January 2007. The weakened spruces were attacked by the bark beetles, the outbreak of which caused a massive dieback of spruce stands. In order to assess the volume of harvested timber in years 2004−2016, the volume of allowable cut (model volume) was calculated from the stand growth model for each forest district of Beskid Żywiecki. The comparison of the volume of harvested timber with the model volume allowed to determine the rate of dieback of spruce stands. The volume of harvested timber in 2007−2009 exceeded the model volume even 2.5 times. The cuts included mainly deadwood, wind−broken and wind−fallen trees, while the harvest of live trees was scarce. In the period 2010−2013, the harvested volume of live trees accounted for 50−70% of the model volume, the volume of deadwood in the same period was ca. 100% and additionally the volume of blown−down timber after the hurricane was 20−40% of the model volume, which taken together accounted approximately to 200% of the model volume. The execution of such harvesting operations, including silvicultural tasks, did not allow to carry out optimal forest management. The period 2010−2013 saw a downward trend. It was disrupted by the hurricane in December 2013, after which the volume of harvested timber, consisting mainly of wind−broken and wind−fallen trees, increased to 280% of the model volume. Again, the high volume of harvested timber was noted in 2016, (ca. 220% of the model volume). The process of damage to spruce stands in Beskid Żywiecki is likely to continue. A decline in its intensity may occur in the absence of old stands, which to a large extent already takes place in the forests of the Węgierska Górka Forest District. Currently, the most threatened by wind are forests in Ujsoły, Jeleśnia and Nowy Targ forest districts. The least threatened are forests in the Węgierska Górka. This forest district and in the future the remaining forest districts of Beskid Żywiecki, will face enormous challenges to obtain high yield and appropriate species composition.
    Źródło:
    Sylwan; 2019, 163, 02; 130-140
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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