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  • Author: Iwona Makuch x
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Abstract

In order to determine the influence of intensive horticulture on the amount of lead and its fraction contents, there were selected soil profiles from following objects to be researched: house gardens and allotment gardens from town areas and arable field on the outskirts of the town. It has not been determined that there is any influence of manner usage on total lead content as well as its distribution in soil profiles. The fractionation composition has created the following series: fraction IV > fraction III > fraction II > fraction I. The manner of usage has influenced the content and distribution the III fraction of lead connected with organic matter. Humus horizons of garden soils is characterized as the highest in its content.

Abstract

The aim of the research was to estimate changes in soil properties caused by intensive recreation and tourism in protected areas within the urban borders of Rzeszów (south-east Poland). The research was conducted on two objects: (1) on protected areas of the Lisia Góra Nature Reserve and (2) along the Wisłok Valley. The difference in anthropopressure between the areas was taken into consideration. Soil penetration resistance and moisture were analysed in the spring and autumn period. Soil texture, pH, total carbon, and electrical conductivity (EC) in a 1:10 soil:water suspension were measured in soil material collected in spring. The ion content (Ca2+, Mg2+, K+, Na+) was measured in the same suspension with an ion chromatograph. There were significant correlations (determined by the Pearson coefficient) between soil acidity, EC, total exchangeable bases, ions of calcium and magnesium, and soil penetration resistance. A significant difference was found in soil penetration resistance between objects (higher in the Wisłok Valley area) and between the distances from the border of the intensively managed area (a decrease as the distance increased). The Z coefficient (the ratio of sodium ions, the sum of calcium and magnesium ions) was significantly lower for the the Lisia Góra Nature Reserve sites.