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    Wyświetlanie 1-3 z 3
    Tytuł:
    Zalesienia a sukcesja wtórna
    Afforestation and secondary succession
    Autorzy:
    Krawczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1313291.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    zalesianie
    sukcesja roslin
    sukcesja wtorna
    afforestation
    natural disturbances
    secondary succession
    Opis:
    Secondary succession is a long and complicated natural process returning forests to post agricultural lands, whereas afforestation is an attempt to speed up this process by planting trees. Massive afforestation in the twentieth century brought an increase in forest area in Poland along with management problems in these areas due to disturbances caused by root diseases. Therefore it appears necessary to employ successional processes more fully in order to create sustainable forest ecosystems.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 4; 423-427
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwości wykorzystania procesów sukcesyjnych w przebudowie drzewostanów na gruntach porolnych na przykładzie Nadleśnictwa Wielbark
    The potential utility of successional processes during timber stand improvement on post-agricultural land in the Wielbark Forest District: a case study
    Autorzy:
    Krawczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2142616.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    zalesianie
    przebudowa drzewostanow
    huba korzeni
    sukcesja wtorna
    Opis:
    In the Wielbark Forest District, and many other forest districts in Poland, disturbances caused by annosum root rot Heterobasidion annosum (Fr.) Bref. have been observed regularly in timber stands cultivated on post-agricultural land. Natural regeneration in the resulting gaps is dominated by birches, but also other tree and shrub species occur. A better understanding of those natural successional processes is required in order to possibly include them in management practices, i.e., to employ them as an aid in stand conversion or improvement. This goal formed the foundation for this study, which was carried out under the assumption that the natural renewal of trees owing to annosum root rot would satisfy the requirements for silvicultural practices. The work was carried out in a pine stand sequence, aged from 1 to 100 years, representing two habitat types, fresh conife- rous forest (Bśw) and fresh mixed coniferous forest (BMśw), grown on post-agricultural land with a total area of 15 757.31 ha. A 100×100 m square grid was established within which 125 circular sampling fields were selected randomly. Both, the existing timber trees and natural regrowth were measured, including an estimation of H. annosum sporocarps to show whether root rot infection had taken place. A detailed analysis of changes in the stocking index revealed that the most damaged tree stands belong to the third age group in both habitats. However, the changes observed in stands from the Bśw habitat were smaller and occurred with a delay compared with those from the BMśw habitat. In conclusion, in response to a disturbance caused by annosum root rot, natural regrowth appeared, involving 4 and 8 tree species respectively in the Bśw and BMśw habitats, but for both habitats, the regrowth was mostly comprised of pine and birch. Therefore, the results from this study clearly indicate that spontaneous regenerative processes would be of use if they were to be included in silvicultural practices.
    Źródło:
    Leśne Prace Badawcze; 2021, 82, 1; 1-14
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Las na gruncie porolnym - oczekiwania i rzeczywistość
    Forest on post-agricultural land - expectations and reality
    Autorzy:
    Krawczyk, R.
    Kowalczuk, S.
    Ksepko, M.
    Sierota, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2136482.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    zalesianie
    gospodarka lesna
    lasy porolne
    stan zdrowotny lasu
    sukcesja roslin
    odnowienia naturalne
    post-agriculture lands
    afforestation
    managed forests
    forest health
    succession
    natural regeneration
    Opis:
    In Central Europe, deforestation led to a reduction of forest area by almost 80%, compared to the original area, by the beginning of the 20th century. At this point in time, a period of intensive reforestation began in an effort to restore forest areas. This process of reforestation, especially on post-agricultural land, continues to this day. This article examines reforestation and natural regeneration on former farmland and the factors that influence the current state as well as the future growth of the forest. Ancient and contemporary views on the functioning of stands on post-agricultural land created by both, natural and forced succession (i.e. afforestation), are recalled. In Poland, this issue primarily concerns managed state forests, which cover an area of over 2 million hectares. We discuss the differences in the development of these stands resulting from the history of agricultural cultivation, the type of afforestation, the influence of environmental factors as well as biotic threats to their development. Furthermore, the need to change the silviculture-, protection- and endowment-based approach to forest management in stands on post-agricultural land is highlighted.
    Źródło:
    Leśne Prace Badawcze; 2021, 82, 2; 75-86
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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