Morphological characteristics and physicsal properties of soil types in Natural Reservation of Zitavsky luh
2005
Szombathova, N. | Chlpik, J. | Nadassky, J. | Noskovic, J.
There were compared physical and morphological parameters of soils associated close to natural reservation of Zitavsky luh (Mollic Fluvisols, Eutric Fluvisols) and soils from artificial water reservoir Zitavsky luh (Histi-Umbric Gleysols). Traits of gleic process in Mollic Fluvisols, Eutric Fluvisols and Histi-Umbric Gleysols were identified in the depth of 0.35 m, 0.45 m and 0.10 m, respectively. Determined physical parameters of Histi-Umbric Gleysols, mainly particle density (psis=1.93 t.per square m), bulk density (psid=0.44 t.per square m) and porosity (P=77.2%) of humus horizon indicated, that it is not common terrestrial ecosystem. High level of groundwater (1 m) in Mollic Fluvisols and Eutric Fluvisols influenced hydrophysical parameters and soil aeration (VAM less than 5%), which was even lower than values typical for meadow. Soil test pits started to fill up with water (probably coming from leaking of water reservoir) during one hour after their digging. Aggregate composition of humus horizons was good in each examined soils and the content of water-resistant aggregates was over 11.2%. Histi-Umbric Gleysols (except A-horizon) showed the highest percentage of clay fraction (36-43%) and the lowest sand percentage (1.4-5.4%) compared to Mollic Fluvisols and Eutric Fluvisols. In contrary, A-horizon of Histi-Umbric Gleysols had the highest percentage of sand (45.3%) and the lowest clay percentage (8.1%). From the pedological point of view, we support the proposal to exclude the soils close to natural reservation of Zitavsky luh from agricultural use.
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