This diploma thesis deals with water retention in soils with different composition of water stable aggregates. Selection of sampling sites within the locality was based on their different land use and the same pedological-climatic conditions. Four samples were taken from topsoil (25 cm), characterizing 3 different land uses - cropland, grassland and forest land. Samples were subjected to aggregate stability testing by washing on the set of sieves and then their retention properties were checked in the apparatus for measuring the water retention in the soil. Aggregate stability testing proved, that the share of larger sizes water stable aggregates are higher in soils less intensively used (forest land, grassland), while annually cultivated cropland showed their lower share. Retention properties of soils were focused on their effects associated with the formation of runoff during rainstorms. Model water volume (gravitational water), which is released by soil during 24 hours under -1 kPa suction has been examined. The results showed that this quantity is highest in forest land and lowest in cropland.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:190811 |
| Date | January 2015 |
| Creators | Kinc, Miroslav |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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