Alternative approaches in the study of erosion processes in intensively farmed landscapes | Alternativní přístupy při studiu erozních procesů v zemědělsky intenzivně využívané krajině
2011
Netopil, P., Palacký Univ., Olomouc (Czech Republic) | Šarapatka, B., Palacký Univ., Olomouc (Czech Republic)
Soil is a very variable and heterogeneous natural system, changing in time and space, affected by forming factors. The pilot area for our erosion study was chosen on the basis of previous research in Čejkovice cadastre (Hodonín district, Czech Republic,). The study area is situated in the Průšánka river basin. The dominant soil type is typical Chernozem and the main soil degradation factor is accelerated water erosion. The paper presents the use of aerial image multitemporal interpretation and classification in soil science as a tool for the detection of areas of erosion on intensively farmed land. The field survey, in combination with the taking of undisturbed soil samples, enabled the verification and extension of results from aerial image analysis. Analysis of soil samples included measurement of 137Cs content, magnetic susceptibility, soil colour and organic carbon content. The combination of remote sensing with field soil sampling proved to be very effective for surface erosion mapping of threatened arable land in the study area. Water erosion is the dominant degradation factor in Czech conditions. Therefore, knowledge of the surface extent and time-scale of accelerated erosion is a basic prerequisite for truly effective protection of agricultural land and planning of anti-erosion measures.
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