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    Wyświetlanie 1-8 z 8
    Tytuł:
    Użytkowanie Puszczy Białowieskiej w czasach Jagiellonów i jego ślady we współczesnym środowisku leśnym
    Utilization of Białowieża Forest in the times of Jagiellonian dynasty and its traces in the contemporary forest environment
    Autorzy:
    Samojlik, T.
    Jędrzejewska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023619.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    uzytkowanie lasu
    lesnictwo
    wiek XV-XVI
    Puszcza Bialowieska
    historia
    osmunda regalis
    distribution
    expansion
    population structure
    protection
    Opis:
    The article presents the results of study on Osmunda regalis L. population number increase during the last 35 years (1964−2001) as a consequence of the cattle grazing decline. The number of Osmunda regalis specimens increased from 15 individuals in the year 1964 to 194 (increase by about 1190%). Passive and active forms of royal fern protection are proposed.
    Źródło:
    Sylwan; 2004, 148, 11; 37-50
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odnowienie naturalne dębu w Leśnym Kompleksie Promocyjnym "Puszcza Białowieska" - stan, warunki i perspektywy
    Autorzy:
    Paluch, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022909.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesne kompleksy promocyjne
    Quercus
    lesnictwo
    dab
    odnowienia naturalne
    Puszcza Bialowieska
    drzewa lesne
    oak
    natural regeneration
    białowieża primeval forest
    hornbeam expansion
    Opis:
    The paper presents the state and conditions of oak natural regeneration in the „Białowieża Primeval Forest” Promotional Forest Complex. It has been stated that under natural conditions oak appears in all forest types but it infrequently grows into a stand. With the recent expansion of hornbeam, it is difficult for oak effectively to regenerate. It has been confirmed in this study that the shelterwood cutting system (leaving some trees to dye naturally) is the most efficient method of natural regeneration of oak in the Białowieża stands.
    Źródło:
    Sylwan; 2005, 149, 01; 30-41
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współczynniki przeliczeniowe suchej biomasy drzew i ich części dla sosny pospolitej (Pinus sylvestris L.) w zachodniej Polsce
    Trees and their components biomass expansion factors for Scots pine (Pinus sylvestris L.) of western Poland
    Autorzy:
    Wojtan, R.
    Tomusiak, R.
    Zasada, M.
    Dudek, A.
    Michalak, K.
    Wróblewski, L.
    Bijak, S.
    Bronisz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/973910.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    biomass expansion factors
    Polska
    Lubuskie forest
    Scots pine
    lesnictwo
    dendrometria
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    biomasa sucha
    wspolczynniki przeliczeniowe
    Opis:
    Paper presents trees and their components biomass expansion factors for Scots pine growing in the Lubuskie Forest (western Poland). Elaborated formulae enable to determine aboveground biomass of Scots pine trees and stands basing on stem or merchantable wood volume.
    Źródło:
    Sylwan; 2011, 155, 04; 236-243
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lata "wskaźnikowe" i "wyjątkowe" w ocenie związków "przyrost radialny-klimat"
    The pointer and exceptional years in assessment of relationships "radial growth-climate"
    Autorzy:
    Wilczyński, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023609.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lata wskaznikowe
    sloje przyrostu rocznego
    warunki klimatyczne
    sosna zwyczajna
    lesnictwo
    lata wyjatkowe
    Pinus sylvestris
    drzewa lesne
    dendroklimatologia
    osmunda regalis
    distribution
    expansion
    population structure
    protection
    Opis:
    The article presents the results of study on Osmunda regalis L. population number increase during the last 35 years (1964−2001) as a consequence of the cattle grazing decline. The number of Osmunda regalis specimens increased from 15 individuals in the year 1964 to 194 (increase by about 1190%). Passive and active forms of royal fern protection are proposed.
    Źródło:
    Sylwan; 2004, 148, 05; 30-40
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnie zmiany składu gatunkowego drzewostanów naturalnych w Puszczy Białowieskiej
    Long-term changes of tree species composition in natural stands of the Bialowieza Forest
    Autorzy:
    Paluch, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/989856.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany naturalne
    zmiany skladu gatunkowego
    struktura drzewostanu
    kierunki zmian
    tempo zmian
    białowieża national park
    natural stands
    undergrowth
    hornbeam expansion
    spruce reduction
    Opis:
    In the paper the long term dynamics (about 40 years) of selected, the most important, natural forest stands of the Białowieża Forest were presented. The studies were carried out on 120 permanent study plots, located both in nature reserves and in the Białowieża National Park. The DBH of all the trees were measured and the number of all the individuals trees and shrubs species with the height under 1,3 m was counted. The analysis of tree species composition and their density changes was carried out, as well as their natural regeneration was analyzed. The strong expansion of hornbeam were observed (fig. 1a, b; tab.). Actually this species was predominant in forest stands, in natural regeneration and was expansive to the more oligotrophic and mezotrophic forest stands, causing their unification towards hornbeam forest. Norway spruce generally declined in abundance and became limited to oligotrophic forest communities. Significantly reduction this species were observed, especially on the mixed coniferous forest at mixed deciduous forest stands. Scots pine, oak and birch declined their share in forest stands, as well as their natural regeneration have been limited too (tab.). In the short time of the last 15 years, the strong reduction of ash share in forest stands has been observed, and the more rapid changes in all the forest stands composition as well.
    Źródło:
    Sylwan; 2015, 159, 04; 278-288
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost liczebności populacji długosza królewskiego (Osmunda regalis L.) w Nadleśnictwie Głogów Małopolski
    Royal fern (Osmunda regalis L.) population number increase in the Głogów Małopolski Forest District
    Autorzy:
    Bednarz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023596.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    liczebnosc populacji
    Nadlesnictwo Glogow Malopolski
    dlugosz krolewski
    gatunki chronione
    lasy
    Osmunda regalis
    lesnictwo
    flora
    Lesnictwo Bratkowice
    osmunda regalis
    distribution
    expansion
    population structure
    protection
    Opis:
    The article presents the results of study on Osmunda regalis L. population number increase during the last 35 years (1964−2001) as a consequence of the cattle grazing decline. The number of Osmunda regalis specimens increased from 15 individuals in the year 1964 to 194 (increase by about 1190%). Passive and active forms of royal fern protection are proposed.
    Źródło:
    Sylwan; 2004, 148, 05; 13-21
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Definicja lasu w ujęciu krajowym i międzynarodowym oraz jej znaczenie dla wielkości i zmian powierzchni lasów w Polsce
    National and international definition of forest and its importance for the forest area in Poland
    Autorzy:
    Jabłoński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989804.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    tereny lesne
    powierzchnia lasow
    definicje
    Polska
    Organizacja Narodow Zjednoczonych
    Protokol z Kioto
    forest definition
    forest cover
    land use
    forest expansion
    afforestation
    kyoto protocol
    Opis:
    Sustainable forest management, the leading topic in forest and environmental policy since the 1990s, has required an appropriate tools for both clarification of general principles and measurement of its progress. Many of indicators developed for these purpose are based on forest area. However, definitions of forest are not compatible, especially on national and worldwide scale. Definition of forest applied by FAO refers to crown cover and land use, while definition adopted for reporting under Kyoto Protocol refers only to the occurrence of trees. Polish Act on Forest applies the destination of land use as a determinant of forest. Paper analyses the process of forest area assessment in Poland for the purpose of national as well as FAO and UNFCCC reporting. Natural expansion of trees on abandoned agriculture land, still classified as the agriculture areas in cadastral system, was recognized as the biggest challenge of forest area assessment in Poland. Although natural succession is described by many authors, the total area subjected to this process is unknown. According to the FAO and Kyoto Protocol rules such areas should be reported as forests. As a consequence, forest area in Poland could be at least a few hundred thousand hectares higher than reported in the last assessments basing only on cadastral system. The proper classification of forests not recorded in the cadastral system would also be important challenge, otherwise between forest area on country and international level will be a huge discrepancy. But, there are some areas classified as a forest in Poland, which probably should not be included within FAO and Kyoto reporting. However, the most important topic concerns the possibility of identification of afforested areas, submitted under article 3.3. of Kyoto Protocol, basing on forest area changes between 1989 and 2012. One should recognise if afforested area is not overestimated using such approach, as a result of modification of forest definition in Poland in 1991. Additional question concerns the forest lands included into cadastral system after 1990, but afforested or resulting from natural succession occurring before that time, which currently are reported as afforestation under article 3.3. of Kyoto Protocol.
    Źródło:
    Sylwan; 2015, 159, 06; 469-482
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnie zmiany składu gatunkowego drzewostanów o podwyższonym reżimie ochronnym w Puszczy Augustowskiej i Puszczy Knyszyńskiej
    Long-term changes of tree species composition in high protective regime stands in the Augustow and Knyszyn Forests
    Autorzy:
    Paluch, R.
    Gabrysiak, K.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/979555.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Augustowska
    Puszcza Knyszynska
    rezerwaty przyrody
    drzewostany naturalne
    zbiorowiska lesne
    sklad gatunkowy
    bor brusznicowy
    bor mieszany trzcinnikowo-swierkowy
    grad miodownikowo-grabowy
    odnowienia naturalne
    zmiany skladu gatunkowego
    zmiany struktury drzewostanu
    natural regeneration
    forest reserve
    natural stand
    hornbeam expansion
    Opis:
    In the last decades, we observed significant changes in the tree species composition in all layers of close−to−natural stands. Since the 1970s, the Forest Research Institute has collected and stored dataset from stand measurements, phytosociological and other research that are the basis for the long−term monitoring of vegetation. The aim of the research was to determine the directions of changes in the species composition and structure of tree stands, and to analyze the changes in the species composition of natural regeneration growing without human interference in various forest communities in the period of about 40 years. From 2014 to 2017, 40 permanent plots of 0.25 ha were re−measured in the nature reserves of the Knyszyn and Augustów Forests (NE Poland). The diameter of all trees was measured and the trees of the natural regeneration and bushes up to 1.3 m high were counted. The stand similarity index (S) between successive measurements was calculated. The analysis of differences in the composition of tree stands in subsequent measurements was carried out using Student t and Kruskal−Wallis tests. In the species composition of fresh coniferous forest stands and fresh mixed coniferous forest, there were significant changes in the number and share of Scots pine and Norway spruce. In the Knyszyn Forest a significant decrease in the share of spruce was observed. However, an increase in the share of deciduous species was remarkable. An inhibition of the natural pine renewal process and increase in density of spruce regeneration was observed. It is necessary to emphasize the significant expansion of hornbeam in a fresh mixed deciduous forest in the Knyszyn Forest and expansion of hazel in the Augustów Forest. Mean basal area in the forest stands has increased. The similarity index between the beginning and the end of the research reached the value of 0.73−0.94. The species composition and density of natural regenerations created without human intervention are not satisfactory from the point of view of forest sustainability. The most important factor affecting the direction and rate of changes in the species composition of tree stands is the expansion of hornbeam and/or hazel. These species cause changes in the ecological conditions of the lowest forest layers, leading to the unification of the species composition of forest communities.
    Źródło:
    Sylwan; 2019, 163, 10; 846-854
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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