Intensive anthropic influence on the soils of Borska nizina lowland
2001
Parackova, A. (Slovenska Akademia Vied, Bratislava (Slovak Republic). Ustav Krajinnej Ekologie)
The aim of this work was to find out intensity and evaluation of anthropic influence on sandy soils of the Borska nizina lowland (south-western part of the Slovak Republic) in following ecosystems: natural forest stand, meadow used as a pasture, livestock yard not used for four years, extensively used garden and intensively used arable land. According to geometrical classification the studied area is a part of geomorphologic region Zahorska nizina lowland and its unit Borska nizina lowland. For the relevant part of territory of the Borska Nizina lowland the mother substrate are aeolian non-carbonated sands. From the soil anthropisation point of view it is interesting, that the Borska nizina lowland creates a contrast area. Natural ecosystems and intensively used agricultural soils occur here together. We described ten profiles to characterise soil properties (probes 1-10). There were two probes in each ecosystem. Chemical properties were assessed using following methods: - total content of organic carbon, Tyurin's method, modified by Nikitin, humus content was calculated by multiplying the organic carbon with coefficient 1,724, - total content of nitrogen according to Kjeldahl, - content of accessible phosphorus, method by Egner, - content of accessible potassium according to Schachtschabel. Thirty-five soil samples were taken from all probes. Active (pH/H2O) and exchange (pH/KCl) soil reaction were assessed by pH-meter. From positive anthropic influences were determined: humus horizon deeping, increasing of accessible nutrients (P,K) and better ration C:N. Negative influence was the strong salination and following alkalisation of soils
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