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    Wyświetlanie 1-2 z 2
    Tytuł:
    Zmiany powierzchni leśnych na terenie Parku Krajobrazowego Puszcza Zielonka w ostatnich 180 latach w aspekcie krajobrazowym
    Changes of forest areas within the Zielonka Forest Landscape Park in the last 180 years (the landscape aspect)
    Autorzy:
    Macias, Andrzej
    Bródka, Sylwia
    Kubacka, Marta
    Powiązania:
    https://bibliotekanauki.pl/articles/43349424.pdf
    Data publikacji:
    2022
    Wydawca:
    Poznańskie Towarzystwo Przyjaciół Nauk
    Tematy:
    woodiness
    landscape metrics
    landscape fragmentation
    forest patches
    landscape historical maps
    Wielkopolska
    Opis:
    The article presents the results of research on changes in forest areas in the PuszczaZielonka Landscape Park. An analysis of forest area transformations was carried out with the use of landscape metrics. Archival cartographic material in the form of topographic maps in the scale of 1 : 25 000, coming from four different periods (1830, 1890, 1940 and 1979/80) and a generalized Database of Topographic Object (BDOT) dated 2010, were used for the research. The result of the research are quantitative and qualitative characteristics of changes in the area and the spatial layout of the forest areas and a model of landscape processes taking place in the Puszcza Zielonka Landscape Park. The first analyzed period (1830–1890) was characterized by a small regression of forest area (index of changes WD = ‒0.05), whereas fragmentation and dissection of forest patches prevailed. The second period (1890–1940), despite the slight increase in forest areas (WD = +0.03), was characterized by a decrease in the number of patches and a reduction of their borders’ length. In the third period (1940-1979), the landscape increment process (WD = +0.27), mainly related to the filling of non-forested areas within forest complexes, prevailed. After 1979, the direction of changes was similar but on a much smaller scale (WD = +0.04).
    Źródło:
    Badania Fizjograficzne Seria A - Geografia Fizyczna; 2022, 13 (73); 123-134
    2081-6014
    Pojawia się w:
    Badania Fizjograficzne Seria A - Geografia Fizyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena fragmentacji lasów Pomorza Zachodniego pomiędzy XV a XX wiekiem
    Evaluation of the forest cover fragmentation in Western Pomerania between the 15th and 20th century
    Autorzy:
    Pieńkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989791.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    fragmentacja lasu
    spadek lesistosci
    Pomorze Zachodnie
    wiek XV-XX
    forest fragmentation
    land use changes
    landscape metrics
    Opis:
    The paper analyzes the changes of forest fragmentation in the Western Pomerania region (NW Poland). The analysis was carried out basing on maps from 16th and 18th century as well as 1930s, when the forest cover in the studied area was the lowest. The historical area of forests was assessed on the basis on Hartnack utilization maps. The analysis of numerical maps was carried out in the GUIDOS program, which enables to evaluate the fragmentation of the forests through Morphological Spatial Pattern Analysis (MSPA) that describes the geometry of patches and their interconnectivity. The program calculated the forest areas classified for the seven categories according to their functions in the landscape (MSPA classes). In the 15th century the forests coverage was around 52.5%. There was a significant loss of forest area between the 16th and 18th century, and in the 18th century they occupied 24.7% of the researched area. Because of the economic changes in the country that took place after the World War II, the forest area in Pomerania increased to 33.7%. It was found that changes in the forest area in the examined period resulted in a decrease in the area classified as forest interior (CORE) and an increase in the boundary area (EDGE). Taking into account the equidistant of 1 km², the area occupied by the core patches dropped in the analysed period from 59.9% to 35.6%. At the same time the spatial isolation of many patches increased, which was reflected in an increase in the area classified as ‘islands' (ISLET). Their share in relation to the entire forest area increased from 4.4% to 23.6%. This could be particularly seen in the area of Pyrzycko−Stargardzka Plain and Choszczno Lakeland, where in the 1930s the so−called forest islands constituted the entire forest area of these mesoregions. The MSPA analysis enabled to specify forest patches classes, which can be useful for landscape characterization, including the patch and corridor model. The fragmentation of forests can be objectively assessed using GUIDOS and it can make the output results obtained in GIS programs complete.
    Źródło:
    Sylwan; 2015, 159, 07; 610-616
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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