University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal

Logo BOKU Resarch Portal

Gewählte Master / Diploma Thesis:

Sandra Totschnig (2012): Der Einfluss von Pflanzenwurzeln auf die hydraulischen Eigenschaften von Böden.
Master / Diploma Thesis - Institut für Hydraulik und landeskulturelle Wasserwirtschaft (IHLW), BOKU-Universität für Bodenkultur, pp 105. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
This thesis investigates the impact of roots on the creation of biopores by executing tensioninfiltrometer measurements on a site at Marchfeld Lower Austria with twelve different intercroping variants. The soil hydraulic conductivity and some elementary pore parameters were calculated for five pressure heads Furthermore soil samples of five different species were subjected to capillarimeter experiments in the laboratory to investigate the influence of different root systems on matrixpotential-water content-relationship. The statistical interrelationship between the different root systems and the hydraulic parameters gained in the field and in the laboratory was investigated by analysis of variance and by regression analysis of the soil hydraulic parameters and root parameters measured by YANG (unpubl.). Analysing the data obtained during the tensioninfiltrometer experiment it was shown that the average root diameter had a corfficient of determination of 0,49 when investigating the regression between hydraulic conductivity at pressure head h = 0 and the root parameters. When the data achieved by the capillarimeter experiment was subjected to analysis of variance no significant root effect could be found. Conducting a regression analysis the best coefficient of determination, 0,81, was given by explaining the water content at a matrixpotential of h = −75 cm by specific root length SRL while the average root diameter had only little effect during this experiment.

Beurteilende(r): Loiskandl Willibald
1.Mitwirkender: Bodner Gernot

© BOKU Wien Imprint