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    Wyświetlanie 1-3 z 3
    Tytuł:
    A multicriteria approach to different land use scenarios in the Western Carpathians with the SWAT model
    Autorzy:
    Kowalczyk, Agnieszka W.
    Grabowska-Polanowska, Beata
    Garbowski, Tomasz
    Kopacz, Marek
    Lach, Stanisław
    Mazur, Robert
    Powiązania:
    https://bibliotekanauki.pl/articles/27312653.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    catchment area
    land use
    soil erosion
    SWAT model
    Western Carpathians
    Opis:
    Water erosion in mountainous areas is a major problem, especially on steep slopes exposed to intense precipitation. This paper presents the analysis of the topsoil loss using the SWAT (Soil and Water Assessment Tool) model. The SWAT model is a deterministic catchment model with a daily time step. It was designed to anticipate changes taking place in the catchment area, such as climate change and changes in land use and development, including the quantity and quality of water resources, soil erosion and agricultural production. In addition to hydrological and environmental aspects, the SWAT model is used to address socio-economic and demographic issues, such as water supply and food production. This program is integrated with QGIS software. The results were evaluated using the following statistical coefficients: determination (R2), Nash-Sutcliff model efficiency (NS), and percentage deviation index (PBIAS). An assessment of modelling results was made in terms of their variation according to different land cover scenarios. In the case of the scenario with no change in use, the average annual loss of topsoil (average upland sediment yield) was found to be 14.3 Mg∙ha-1. The maximum upland sediment yield was 94.6 Mg∙ha-1. On the other hand, there is an accumulation of soil material in the lower part of the catchment (in-stream sediment change), on average 13.27 Mg∙ha-1 per year.
    Źródło:
    Journal of Water and Land Development; 2023, 57; 130--139
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of long term low water level in the mountain river catchments area
    Autorzy:
    Kopacz, Marek T.
    Kowalewski, Zbigniew
    Santos, Luis
    Mazur, Robert
    Lopes, Vasco
    Kowalczyk, Agnieszka
    Bar-Michalczyk, Dominika
    Powiązania:
    https://bibliotekanauki.pl/articles/2048521.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    land use changes
    low water level
    nitrogen load
    phosphorus load
    small mountain catchments
    Opis:
    Changing atmospheric conditions, including above all the deepening extreme weather phenomena, are increasing from year to year. This, in consequence, causes an increase in the incidence of low outflows. The study compares low water levels for two catchments: Biała Woda and Czarna Woda, and phosphorus and nitrogen load using the Nutrient Delivery Ratio (NDR) model in InVEST software. The objective of the NDR is to map nutrient sources from catchment area and transfer to the river bed. The nutrient loads (nitrogen and phosphorus) spread across the landscape are determined based on a land use (LULC) map and associated loading rates described in literature. The studies have shown that low water levels have been more common recently and pose the greatest threat to the biological life in the aquatic ecosystems. The structure of land use is also of great importance, with a significant impact on the runoff and nitrogen and phosphorus load. Phosphorus and runoff from surface sources to the water of Biała Woda and Czarna Woda catchments area has been reduced in forested areas. Only higher run-offs are observed in the residential buildings zone. The nitrogen load was also greater in the lower (estuary) parts of both catchments, where residential buildings dominate.
    Źródło:
    Journal of Water and Land Development; 2021, 51; 225-232
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The pollution of surface water in the agricultural catchment against the background of agrarian structure and production intensity
    Autorzy:
    Lach, Stanisław K.
    Kowalczyk, Agnieszka
    Kopacz, Marek T.
    Kowalewski, Zbigniew
    Jakubiak, Mateusz
    Mazur, Robert
    Grabowska-Polanowska, Beata
    Powiązania:
    https://bibliotekanauki.pl/articles/2203557.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    agrarian structure
    intensive agricultural production
    land use
    surface water quality
    Szreniawa River catchment
    Opis:
    The intensification of agricultural production is one of the factors determining economic development. Increasing mechanisation and use of fertilisers in agriculture lead to higher yields, but at the same time they can pose a threat to the environment. The overuse of chemical fertilisers contributes to increased concentration of nutrients in agricultural runoff. One of such areas is the Szreniawa River catchment, the study area located in the southern part of Poland. In this catchment, intensive mostly mechanical ploughing is applied in, for instance, vegetable production. The area has loess soils, which with intensive ploughing are susceptible to erosion. The study aims to determine changes in the quality of flowing waters against the background of agricultural production and land-use characteristics. Surface waters were classified as class II and occurred at all analysed points. The highest concentrations of N-NO3 , N-NH 4 and P-PO 4 were found at a point in the middle of the catchment (lower part of research area). There, the lowest concentrations were recorded in 2018, which was related to the amount of precipitation during the growing season. On the other hand, the volume of plant and animal production closely correlated with the quality of surface water in the area. This was also confirmed by the land use structure. In conclusion, intensive agricultural production, mainly in terms of plough tillage causes significant hazards associated with soil erosion especially on agriculturally sensitive soils, although it provides good yields.
    Źródło:
    Journal of Water and Land Development; 2023, 56; 242--248
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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