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    Wyświetlanie 1-3 z 3
    Tytuł:
    Spływ wody i erozja gleby na piaszczystym stoku w obszarze młodoglacjalnym – pomiary poletkowe (Pojezierze Suwalskie, Polska NE)
    Runoff and soil erosion on sandy slope in the last-glacial area – plots measurements (Suwałki Lakeland, NE Poland)
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084644.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    wody powierzchniowe
    splyw wod
    erozja gleb
    pomiary poletkowe
    Pojezierze Suwalskie
    Polska Polnocno-Wschodnia
    Opis:
    The aim of the study performed in years 2007-2009 in the Suwałki Lakeland was assessed the intensity of soil erosion and runoff on a sandy slope under different cultivation. The study also focused on analysis of selected factors affecting the erosion (intensity of rainfalls, erosion susceptibility of soil, vegetation cover). Measurements were performed on the standard USLE plots inclined 8°. The mean annual erosion amounted to 0,2 t ha⁻¹ under cereals (rye and oat), 2,1 t ha⁻¹ under potatoes planted in rows parallel to the slope gradient, and 2,75 t ha⁻¹ on the black fallow. Experimentally determined index of erosion susceptibility K was 0,0041. The mean annual value of the canopy factor C was 0,064 for cereals and 0,8 for potatoes. Short rainfall events of 20-30mm and erosivity 100-200 MJ mm ha⁻¹h⁻¹ are characteristic for the study area. The results obtained for the sandy slope support previous findings that such short-term events play a significant role in soil erosion. Effectivity of such events strongly depends on the vegetation cover as they are responsible for 25-30% of soil loss under potatoes and 45-50% under cereals.
    Źródło:
    Prace i Studia Geograficzne; 2010, 45; 197-214
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie izotopu Cs-137 do oceny erozji gleby na Pojezierzu Suwalskim
    Soil erosion assessment using Cs-137 radionuclide in the Suwalki Lakeland
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084289.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    izotop 137 Cs
    ocena
    erozja gleb
    gleby
    Pojezierze Suwalskie
    zastosowanie
    obszary mlodoglacjalne
    depozycja zanieczyszczen
    Opis:
    The aim of studies was the recognition of the contemporary denudation considering tillage translocation and water soil erosion. This study was performed in the typical last glacial relief. The Cs-137 inventory was analysed along two hillslope profiles and at their footslopes. The value of soil erosion and sedimentation was calculated using the proportional model and the simplified mass balance model. Studies showed that eroded soil from upper and middle segments of the slopes was re-deposited on concave segments of the slopes. The erosion rate was 0.5-1.6 mm on the top of hills and 0.8-3.2 mm on their slopes. The deposition occurs on the concave slope at rate of 3.8-6.6 mm per year on average. Erosion-deposition balance indicate that the small part of eroded soil was exported to the valley bottom and bottom of depression. The share of the water rill and interrill erosion in the total of topsoil erosion is range from 1 to 10% depending on used model. Tillage translocation is the main process shaped a small hills in the last glacial ares.
    Źródło:
    Prace i Studia Geograficzne; 2013, 51; 91-104
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cechy sedymentologiczne różnowiekowych osadów korytowych na przykładzie doliny górnej Czarnej Hańczy (Pojezierze Suwalskie)
    Sedimentological features of various age river channel deposits on the example of the upper Czarna Hancza valley (Suwalskie Lakeland)
    Autorzy:
    Ostrowska, A
    Oswiecimska-Piasko, Z.
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084993.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Opis:
    The aim of the research carried out in the upper Czarna Hańcza valley was to explore the characteristics of channel deposits from various ages and to evaluate their significance in the process of drawing conclusions about the fluvial environment. The deposits of the contemporary Czarna Hańcza channel were analysed; the channel itself is tortuous, locally meandering, with small meanders (with the curve radius of 30 to 70 metres). The deposits of the river with large-magnitude meanders were identified using the example of the Potasznia palaeomeanders, with the curve radius of 500 metres. The deposits of the braided sandur river, providing material for both types of younger fluvial deposits, were revealed in the exposures in Potasznia and Sobolewo. An analysis of the deposits' grain size was conducted using the sieve method, and the texture indicator was determined using the Folk and Ward method (1957). To draw conclusions about the environmental dynamics and the manner of transporting deposits on the basis of sedimentological features, the relationship between the average grain diameter - Mz (on the ϕ scale) and standard variation d₁ (sorting) was used, as well as one between the grain diameter - Mz and the first centile of the grain size distribution – C, which, along with larger ones, account, respectively, for 50% and 1 % of the deposit mass (Passega 1956, Passega Byramjee 1964, Mycielska-Dowgiałło 1995). In the relationship between the average grain diameter - Mz and the standard deviation - σ₁ pattern I was better visible in all the examined deposits, in which the thicker deposits were more poorly sorted. According to Mycielska-Dowgiałło (1995), it is a characteristic feature of a dynamie channel environment. Younger series are characterised by lesser differences in the average grain diameter, accompanied by larger variations in the sediment sorting and, at the same time, a poorer degree of sorting (individual channel types represent the lines with a similar ten dency, Mz-σ₁ but having a smaller channel gradient). Pattern II could be discerned only in the current facies deposits (which until naw has not been identified in the bottom deposits of Polish rivers), in which thicker deposits are better sorted. This is channel lag deposits. Also, in the C-M diagram, most of the points representing the examined deposits can be found in field I, comprising deposits transported in traction in an environment characterised by a high dynamie activity. In the case of contemporary channel deposits, the dependence of the deposition conditions on the channel gradient could be easily visible.
    Źródło:
    Prace i Studia Geograficzne; 2003, 33; 59-70
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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