Genetic soil changes in logn-term process of water erosion - 20th century the second half
2001
Jambor,P. | Sobocka, J.
Relationships between water erosion processes and basic soil properties are reflected in soil genesis and soil quality index in time of 20th century the second half being observed in western Slovakian hilly lands (PVOD Kocin, PD Risnovce). The results are based on field recognition, soil survey, archive materials (starting point - present situation), as well as research work carried out during 1961-2001. Following results were achieved: intensive water erosion processes share in typological changes of soil classification, typical catena sequence can be ordered as: Hapli-Dystric Luvisol - Haplic (Calcic) Luvisol, eroded form - Calcaric Regosol - Haplic Luvisol, eroded form - Haplic Luvisol (Stagnic), accumulated form, the soil type Calcaric Regosol was widely developed in time of large-scale use farming in pursued period. It can be considered as evidence either water erosion processes high intensity or methodological shortcomings in soil survey in seventies (the first action of its kind). Calcaric Regosol was mapped on total area 89.5 ha (6.9%) in nineties, topsoil stoniness rose up significantly and was mapped on 21% territory due to long-term runoff, higher clay contents (40-45%) reduced soil erodibility significantly in steep condition (round 12)
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