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Vacha R.,Research Institute of Soil and Water Conservation | Cechmankova J.,Research Institute of Soil and Water Conservation | Skala J.,Research Institute of Soil and Water Conservation
Plant, Soil and Environment | Year: 2010

The influence of soil load with polycyclic aromatic hydrocarbons (PAHs) on their contents in selected plants was investigated. A set of experiments was realized in three years. The influence of extreme soil load with PAHs (soil contaminated by floods and sludge application) on their content in plants was observed in a pot trial. A laboratory column extract trial investigated PAHs transfer from the soil into soil solution in different conditions. The results showed that the transfer of PAHs into plants is influenced mainly by chemical characteristics of the substances (the number and position of aromatic nuclei); by soil characteristics (content and quality of soil organic matter) and by plant characteristics (plant species and plant bodies). The roots of tested plants were loaded with PAHs thanks to the transfer of less-nuclei compounds (2-3 nuclei) in soil solution into the roots and thanks to the binding of more nuclei compounds (4-6 nuclei) on organic substances in epidermis and primary bark of roots. These results were confirmed by a laboratory column trial. Source

Skala J.,Research Institute of Soil and Water Conservation | Cechmankova J.,Research Institute of Soil and Water Conservation | Vacha R.,Research Institute of Soil and Water Conservation | Horvathova V.,Research Institute of Soil and Water Conservation
Moravian Geographical Reports | Year: 2013

Abandoned agricultural objects from the period of large-scale agricultural production in the socialist era represent a peculiar topic in the former communist countries of Eastern Europe, surpassing the experience of the EU15 countries or USA that have extensive and long-standing practice in brownfields redevelopment. The question of brownfields resulting from the transformation of the agricultural sector during the transition period of the Czech Republic is presented in this paper. Agricultural brownfields are the most frequently occurring brownfields in the Czech Republic (especially in some regions), but their area share is much lower, indicating their spatial disposition in the landscape. Some aspects of agricultural brownfields regeneration, including possibilities of its funding, are discussed in the paper. We also deal with geographical, environmental and historical aspects of the existence of these localities in the Czech Republic in the context of potential financial resources and possibilities for funding their revitalization. Source

Stejskalova D.,Research Institute of Soil and Water Conservation | Karasek P.,Research Institute of Soil and Water Conservation | Tlapakova L.,Research Institute of Soil and Water Conservation | Podhrazska J.,Research Institute of Soil and Water Conservation
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2013

The present paper contains the evaluation of rural landscape development in model territories by means of landscape structure analysis. Based on the computed values of landscape ecology indexes, development and typical and specifi c features of analysed territories are interpreted in defi ned time horizons. The territories differ in the intensity of their use, natural conditions and different social requirements. Two territories have intensive agriculture in different natural conditions, the third model territory is situated in the protective zone of a water resource, and the fourth model territory is a protected area. For all localities, the studied baseline period was that of the Stable Cadastre mapping (1825-1839), followed by the sixties of the 20th century and the present time. The method of processing and evaluation of four model territories is described and a detailed analysis and interpretation of one territory - Hubenov region is presented. Agricultural land formed the landscape matrix in Hubenov territory in the past and at present. There is a signifi cant reduction in the number of plots of the landscape classes and the increase in the average size of agricultural and non-agricultural plots between year 1825 and 2009. Spatial distribution of agricultural land has changed. Area of arable land decreased after the construction of water reservoir Hubenov. The area of permanent grassland, forests and water bodies increased. It was refl ected in an increase of ecological stability. In the context of the change of landscape structures decreased the length of ecotone edges of the categories arable land and PGL and categories arable land and forest. Source

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