- Tytuł:
-
Badania sedymentologiczne współczesnych osadów deluwialnych i ich znaczenie w ocenie dynamiki procesów erozji gleby na przykładzie Pojezierza Suwalskiego
Assessment of soil erosion processes based on sedimentological analyses of contemporary deluvial sediments on the example of the Suwalki Lakeland - Autorzy:
- Smolska, E.
- Powiązania:
- https://bibliotekanauki.pl/articles/887386.pdf
- Data publikacji:
- 2008
- Wydawca:
- Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
- Tematy:
-
Pojezierze Suwalskie
erozja gleb
osady deluwialne
procesy erozyjne
sklad granulometryczny
uziarnienie
warunki meteorologiczne
wlasciwosci teksturotworcze
wskaznik sedymentacyjny - Opis:
- Research on soil erosion undertaken on selected slopes of the Suwałki Lakeland (NE Poland) in years 1986–1989, 1998–1999 and in 2007 allowed to determine features of deposits transported and deposited within the slopes. Sedimentological analyses were used and following granulometric indices calculated: mean grain size diameter, sorting and skewness. Organic matter content was also determined by loss on ignition. Size of mineral grains (Mz and d-5%) were analysed in relation to rainfall erosivity. Analyses of sediments originated from soil erosion supports previous fi ndings regarding their structural and textural features. Granulometric composition of deluvial deposits is determined by the source material – soil cover. Analysed slope deposits were medium and weakly sorted and their skewness was positive which shows similarity to the slope soil cover. Deposits originated from rill erosion had skewness varying from slightly positive to slightly negative. Rainfall erosivity weakly correlates with the size of mineral grains transported and deposited. This is explained by the fact that transported material included not only separate grains but also grain aggregates and because the material partially originated from rainsplash. Following juxtaposition of sedimentological indices: Mz-σ1, Mz-Sk1, Sk1-σ1 and also Mz with loss on ignition proved helpful in determining conditions of the erosion-transportdeposition process. Multimodal frequency curves with a low amplitude of the modes are characteristic and typical for deluvial sediment. It is found that the minimum transport distance needed for registration of the process in sedimentological properties of the deposits is 30 m. Moreover, only rainfall of a high intensity was able to modify sedimentological proporties of the deposits.
- Źródło:
-
Scientific Review Engineering and Environmental Sciences; 2008, 17, 2[40]
1732-9353 - Pojawia się w:
- Scientific Review Engineering and Environmental Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł