HLADKÝ JAN, NOVOTNÁ JAROSLAVA, ELBL JAKUB, KYNICKÝ JINDŘICH, JUŘIČKA DAVID, NOVOTNÁ JITKA, BRTNIC... more HLADKÝ JAN, NOVOTNÁ JAROSLAVA, ELBL JAKUB, KYNICKÝ JINDŘICH, JUŘIČKA DAVID, NOVOTNÁ JITKA, BRTNICKÝ MARTIN. 2016. Impacts of Water Erosion on Soil Physical Properties. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(5): 1523–1527. The aim of the paper is to determine the effect of water erosion on maximum capillary water capacity, bulk density, soil airiness, total porosity and minimal air capacity. For this purpose, 13 plots located in South Moravia were selected. Each plot was divided into three positions. The first one, eluvial, was located on the top of the slope. These were always flat and water erosion did not occur there. The second one was midslope position where soil was damaged by water erosion. Soil washed down from the midslope position was accumulated in the third one. It has been found that water erosion has a statistically significant effect on minimal air capacity of topsoil, and on bulk density and airiness of subsoil. Variance analysis showed less variance of values referring all characteristics beyond these: the minimal air capacity of the midslope position damaged by erosion regarding topsoil; and maximum capillary water capacity, soil airiness and porosity regarding the subsoil.
HLADKÝ JAN, KYNICKÝ JINDŘICH, JUŘIČKA DAVID, BRTNICKÝ MARTIN. 2016. Effect of Water Erosion on So... more HLADKÝ JAN, KYNICKÝ JINDŘICH, JUŘIČKA DAVID, BRTNICKÝ MARTIN. 2016. Effect of Water Erosion on Soil Respiration Characteristics of Chernozem Topsoil. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(5): 1517–1521. Soil respiration characteristics are an important indicator of the soil state. The aim of this study is to determine the effect of water erosion on soil respiration characteristics, in particular to determine whether erosion-damaged areas show statistically significantly worse respiratory activity compared to intact soil. Respiratory biological activity, as an indicator of soil quality, was monitored on 13 plots with chernozem soil type damaged by water erosion. There were determined basic respiration characteristics, such as basal respiration (B), respiration after adding ammonia nitrogen (N), respiration after addition of glucose (G), respiration after adding glucose and ammonia. Furthermore, from the above mentioned characteristics, following ratios were determined: N/B, G/B, G/N, NG/B and the factor of complex action (FCA). Statistical analysis showed that the position on a slope affects the respiratory characteristics. Based on results, we can say that the soil shows excessive amount of nitrogen, lack of easily degradable organic substances and poor stability of organic matter. Using statistical analysis, it was found that water erosion affects only the indicators B and G/N.
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