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    Wyświetlanie 1-4 z 4
    Tytuł:
    Porównanie zmienności cech taksacyjnych drzewostanów sosnowych pomiędzy obszarami różniącymi się poziomem zanieczyszczeń przemysłowych na Niżu Polskim
    Comparision of the variability of pine stand appraisal properties in areas with different levels of industrial pollution in the Polish Lowlands
    Autorzy:
    Węgiel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015988.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    zanieczyszczenia przemyslowe
    cechy taksacyjne
    klasy wieku
    wysokosc przecietna
    przyrost miazszosci
    lesnictwo
    Niz Polski
    zanieczyszczenia powietrza
    piersnice drzew
    zasobnosc drzewostanu
    zmiennosc
    pinus sylvestris
    coniferous forests
    industrial pollution
    tree height
    dbh
    stand volume growth
    standing
    volume
    polish lowlands
    Opis:
    The paper contains the results of the analyses of four properties (average tree height, average dbh, standing volume, average stand volume growth) of pine stands growing on poor sites in the territory of the Polish Lowlands. The comparison of four relative values of the analysed properties among four 20−year age classes was performed. The obtained results were referred to the level of industrial pollution.
    Źródło:
    Sylwan; 2007, 151, 04; 26-35
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania powierzchniowe w lasach – uwagi na marginesie penetracji prowadzonych w granicach Nadleśnictwa Zdrojowa Góra w Pile
    Surface survey in forests – remarks in the margin of the research conducted within the borders of the “Zdrojowa Góra” forest district in Piła
    Autorzy:
    Rola, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/896909.pdf
    Data publikacji:
    2015
    Wydawca:
    Narodowy Instytut Dziedzictwa
    Tematy:
    surface survey in forests
    Polish Archaeological Record (AZP)
    “Zdrojowa Góra” forest district in Piła
    the Regional Museum in Piła
    Opis:
    In 2011, in the area of “Zdrojowa Góra” forest district in Piła, the execution of the project connected with conducting surface survey was initiated. The survey was carried out within the regenerated areas, that is, on the parts of the forest stands where, within the forest management activity, the forest was cut down and new trees were planted. As a result of the research conducted during four seasons, 85 new archaeological sites were discovered. The majority of them (57) are the relics of prehistoric settlements, 44 are from the late medieval and modern period, and one trace of settlement was identified as dating back to the early Middle Ages. It seems that the discovered sites are damaged to a minor degree, since, for at least one hundred years, they have been out of the range of destructive agricultural activities and erosion. The results of the surface survey conducted in the regenerated areas of “Zdrojowa Góra” forest district in Piła are of a local significance, but, at the same time, they are an inspiration for making further conclusions. In the 1/3 territory of Poland, which is presently forested and has not been examined within the AZP, there are well-preserved sites not affected by the well-known disaster, which has been taking place in the farm land areas in recent decades. Even at cautious estimates, that potential must be stunning. Full archaeological survey of the presently forested areas will be possible within about 100-120 years. Thus, potentially, such works would have to be planned for several consecutive generations of archaeologists. The implementation of such a research project which, possibly, would gradually expand its spacial scope, is not impossible for archaeological institutions. Anyway, the works conducted in a given area for merely a few or over a dozen years would be of importance as well. The results of the surface survey conducted hitherto in the area of “Zdrojowa Góra” forest district in Piła prove that the idea is worth implementing.
    Źródło:
    Raport; 2015, 10; 285-298
    2300-0511
    Pojawia się w:
    Raport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in the spruce forests of the Polish Tatra Mts. during the last 80 years
    Autorzy:
    Kozłowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/294585.pdf
    Data publikacji:
    2009
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    spruce forests
    Polish Tatra Mts.
    floristic changes during 80 years
    vegetation typology
    Opis:
    On the basis of the historical (dating from the 1920s) and contemporary phytosociological relevés, taken in the spruce forests of the Polish Tatra Mts., the changes were determined that took place in these forests. This area had been for centuries under the influence of human economic activities, mainly pasturing and wood extraction, and then protected in the Tatra National Park. These changes differ according to the altitudinal vegetation belts. In the coniferous forests of the upper montane belt, the changes due to wind breaks or tree stand ageing did not lead to transition to other forest associations. A tendency can yet be noticed of losing a part of the species combinations characteristic for the associations or higher syntaxonomic units, which might be linked with the stopping of grazing in the forests and development of the undergrowth of tall herb character. The association of the fir-and-spruce forests in the lower montane belt displayed much bigger changes. There was an increase of the role of species of the deciduous forests, while the role of the coniferous forest species was limited in the studied patches, which clearly indicates the evolution of the forests towards the beech woods, typical for the lower montane belt. This means a progressing limitation of the spruce forests in the limestone Tatras to the advantage of return of the beech woodsdominated there in older time.
    Źródło:
    Landform Analysis; 2009, 10; 64-69
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zrównoważone użytkowanie różnorodności biologicznej współczesną formą ochrony przyrody
    Autorzy:
    Grzywacz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022647.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    rozwoj zrownowazony
    roznorodnosc biologiczna
    lesnictwo
    ochrona przyrody
    biological diversity
    polish forests
    large−scale nature conservation
    Opis:
    The author refers to the contemporary understanding of the terms: biological diversity, sustainable development, nature conservation. The most recent information about biological diversity of Polish forests was presented on the landscape, habitat, species and gene level. Differences were shown between sustainable use of biological diversity treated as the contemporary form of nature conservation and traditional conservation and biocoenotic methods. The author pointed out to difficulties in and lack of acceptance of the large−scale form of nature conservation in forests by some circles of professional nature conservationists.
    Źródło:
    Sylwan; 2005, 149, 05; 10-22
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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