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Gewählte Master / Diploma Thesis:

Gregor Viktor Buggelsheim (2019): Untersuchungen der Biomasse und der Wurzelverteilung von Gehölzen aus Einlagen Am Hangrost und der Pilotenwand im Versuchsgarten Essling.
Master / Diploma Thesis - Institut für Ingenieurbiologie und Landschaftsbau (IBLB), BOKU-Universität für Bodenkultur, pp 204. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
In this thesis, examinations of biomass and root spreading of local woody species from rooted plant inlays were conducted. The woody plants were established in 2000 in live slope grids and contour logs for slope protection on an artificial dam in Vienna. 32 small trees and shrubs of different kinds were analysed according to the following aspects; root diameter, root spreading, number of sprout- and adventitious roots, sprout diameter, leaf area, above- and below-ground biomass. The root-sector-analyses showed a concentration of the majority of root biomass around the former stems. Half of woody species had more roots on the primary root system than adventitious roots on the soil covered sprout. The average root-shoot ratio of the used woody plants was shown to be 0.41. The total root-shoot ratio indicates that the above ground biomass produced significantly more mass (155.1kg) than the below ground biomass (63.5kg). The mass shares of the former plant inlays on the below-ground biomass of the 8 different woody species were found to be between 37% and 74%. This indicates that 17 years after installation the former plant inlays account for the majority of the below-ground biomass. Concerning root interaction, no root intergrowth could be detected; however, tight entanglements and thus stable root frames were identified. Even without root intergrowth, at least one individual was among the top biomass producers in each root frame. The point-cloud-distribution suggests a link between the diameter at breast height and the below ground biomass. It can be interpreted that the data in the diameter section between 0.5cm and 2cm is seemingly more linear than in the upper range in which the scattering of the measurements is increased. The leaf areas were determined by Leaf Area Meter and a common scanner using the software imageJ. A comparison of the two methods indicated a decrease of leaf area by 6.3% using the Leaf Area Meter in contrast to measurement by scanner and imageJ.

Beurteilende(r): Stangl Rosemarie

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