Gewählte Master / Diploma Thesis:

Philipp Gehmacher (2016): Einfluss der Bewirtschaftung auf die Lagerungsdichte und den Eindringwiderstand von Dauergrünlandböden des Salzburger Flachgaues.
Master / Diploma Thesis - Abteilung Pflanzenbau, BOKU-Universität für Bodenkultur, pp 76. UB BOKU obvsg FullText

Data Source: ZID Abstracts

Abstract:

Intensification of grassland farming is associated with high field traffic intensities and the use of heavy machinery, hence it is related to an increased burden on soil. Up until now, few studies have investigated on the impacts and consequences of grassland management regimes on physical soil properties and processes, despite the fact that grassland soils are expected to fulfill various functions, that could be endangered or impeded by harmful soil compactions. Bulk density values of Austrian grassland soils are hardly known, but crucial in terms of determining soil chemical composition (e.g. organic C content). Bulk density values also provide information about the state of compaction and the available pore volume of the soil. In this study, measurement of soil physical parameters (bulk density, penetration resistance) were combined with measurements of volumetric water content and soil chemical analysis (pH, organic C and N) as well as vegetation survey. Research was conducted in the study area of pre-alpine, grassland dominated region of Salzburg (Flachgau) where various grassland management regimes can be found. Results showed significantly increased bulk densities and penetration resistances under grazed and heavily trafficked grassland, particularly underneath the main rooting zone in a depth of 10- 20 cm. Topsoil bulk densities were found to be generally low, due to high organic carbon content and root mass.

Beurteilende(r): Bodner Gernot

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