University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Andreas Brachner
(2020):
Die Beurteilung des Risiko- und Habitatpotenzials an Habitatbäumen in der visuellen Baumkontrolle.
Master / Diploma Thesis - Institut für Ingenieurbiologie und Landschaftsbau (IBLB),
BOKU-Universität für Bodenkultur,
pp 217.
UB BOKU
obvsg
FullText
- Abstract:
- The aim of the present work was to develop a specifically refined tree assessment method for habitat trees used in the visual tree control. The presented risk and habitat assessment show that decisions to forego measures are possible in terms of habitat tree protection. Saving valuable trees in the urban and suburban area is essential to avoid the loss of biodiversity. The results of the field study confirmed that the assessment of the ecological value and additionally the location of the tree is very important for the further habitat tree management. In this master-thesis more than half of the field subjects could be decided to waive the measures. This has been achieved by re-examination of the ALARP-Range. For the described purpose, an ecological tree control sheet was created. This ecology control method was tested on 46 habitat trees. The sheet of control contains the data of the tree including a developed ecological assessment of the tree and its surrounding area. The risk and habitat assessment method was developed as a part of the ecological assessment. The scheme enables tree inspectors to better assess the risk to rule out the likelihood of an accident. The ALARP sector range initiated a double check. This second check helps to prevent hasty actions. In case of uncertainty, risk-minimising measures can often help avoid cutting measures. A further research question addressed the use and reliability of computer supported wind load analysis programs on habitat trees. The results showed that the wind load analysis programs may not be effective due to the many deviant results on habitat trees. The risk assessment system, which is used in this master thesis was changed and converted to habitat-ecological factors. For every tree an abstract numerical value was formed in the assessment system. The numerical values are formed by assigning categories and performing a calculation. In the end this enables the comparison of the risk and habitat potential.
- Beurteilende*r: Stangl Rosemarie