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    Wyświetlanie 1-2 z 2
    Tytuł:
    Landscape indices and landuse - tools for landscape menagement
    Autorzy:
    Szabo, S.
    Csorba, P.
    Varga, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/87660.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    landscape metrics
    landscape analysis
    multivariate analysis
    Hungary
    Opis:
    Describing the environment with quantitative data is a new requirement in the environment related sciences which is the consequence of the developing computerbased methods. New requirements with new tools generated quick development in the measuring level: parameters turned to be measurable in several subjects. Landscape ecology as a young science has its own methods from the beginnings, but the quantified landscape geometry indices appeared only in the 1980s. Exploration of the landscape structure made necessary to elaborate those methods which were applicable to characterize the patches, corridors and the matrix of the landscapes. Nowadays we can find several landscape indices to quantify the geometry of landscape elements in patch and landscape level, but they are not used in the practice of the landscape management. It is shown in this paper that these landscape indices what novelty can mean in a sample area of Northern Hungary and what can be the practical side of their the usage. FRAGSTATS software was used to calculate landscape metrics. Principal component analysis was applied to reduce redundancy of indices and, based on the results, some of them was selected. Land use types and microregions were used as dependent variables in a discriminant function analysis. Both of them were identifiable with this method in several cases. Landscapes were clustered based on the characteristics of the landscape indices.
    Źródło:
    Prace Komisji Krajobrazu Kulturowego; 2008, 8; 7-20
    1896-1460
    2391-5293
    Pojawia się w:
    Prace Komisji Krajobrazu Kulturowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    "Red book" of the Hungarian landscapes atlas of the threaths on the natural functioning of the 229 Hungarian microregions
    Autorzy:
    Csorba, P.
    Szabo, J.
    Bodnar, R.
    Szilagyi, Z.
    Szabo, G.
    Szabo, S.
    Novak, T.
    Fazekas, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/87960.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    indexes for landscape functioning
    landscape fragmentation
    natural hazards
    land use change
    Hungary
    Opis:
    For the good established landscape planning landscape protection and landscape management actions have to take into consideration the actual conditions of the landscape elements. Earlier we dealt with the stability of the landscapes (Kerényi, Csorba, 1996), recently started to investigate the most important factors, which are endangers the proper functioning of the landscapes. Results are calculated for 229 microregions of the country, which are elements of the official landscape hierarchy of Hungary described in the Cadastral of Microregions of Hungary. The average size of the microregions are 100-500 km2. There are certain factors among which some have already elaborated, and others are being worked on yet. Degree of ecological fragmentation of the microregions by roads, railway lines and settlements was determined during the last year. In the case of large settlements the extent of inner parts, traffic intensities of the roads was taken into account, while in the case of railroads it was taken into consideration whether railway lines are single or double tracked. Results were purified using a weighting, where the location of the protected natural areas compared to the situation of the given settlement, roads or railroads was taken into consideration. In the calculations it was taken into account as well that the agglomeration processes of the large settlements may restrict the ecological gates and corridors of the migration of plant and animal species. From the series of maps on natural threats on microregional level, the map of the hazards of drought is presented first. The map gives a definite answer to the question, in which microregions is profitable to establish irrigation systems; and how high is the uncertainty of the rate of their utilization. Global warming, however, may modulate the map resented here remarkably in the next decades. Microregions that have been classified into transition categories with moderate or medium level of drought hazard may fall into categories of serious hazard of drought in the future. A synthesizing map has been completed by summing the seven datasets of the indicator group of natural hazards and the weighting of the subsets. Landscape planning is strongly affected by tendencies of macro economy on the present land use structure. EU agricultural policies have just started to affect strongly on Hungarian land use structure, therefore attempts have been made in order to forecast their impacts. Present Hungarian land use structure has been compared to priorities of the EU. Prospective shifts in land use structure have been determined for the 35 regions of Hungary. According to the 8-10 factors mentioned above, we shall have a detailed database to evaluate the microregions of Hungary in order to characterize the most threatened landscapes, and the most dangerous impacts on the landscape functioning.
    Źródło:
    Prace Komisji Krajobrazu Kulturowego; 2008, 8; 43-60
    1896-1460
    2391-5293
    Pojawia się w:
    Prace Komisji Krajobrazu Kulturowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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