University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Doctoral Thesis:
Martin Kuehmaier
(2011):
Multikriterielle Entscheidungsunterstützung in der Holzernteplanung
Entwicklung eines GIS-basierten Berwertungsmodells für Holzerntesysteme und Demonstration am Beispiel der Forstverwaltung Wittgenstein.
Doctoral Thesis - Institut für Forsttechnik (FT),
BOKU-Universität für Bodenkultur,
pp 283 S..
UB BOKU
obvsg
FullText
- Abstract:
- Main objective of this thesis was the development of a multi-attribute SDSS for supporting middle- and long-term decisions in timber harvesting considering environmental constraints and stakeholder interests. The developed model is made up of four stages. First the area of interest is defined. Next a technological evaluation of harvesting systems capability determines their compatibility with location factors. Only acceptable systems are included into the third stage, the utility analysis. The goal of this procedure is to minimize damage on soil and remaining stand, emissions, relocation time and to maximize contribution margin, employment and working safety. The last stage of the model provides a metric that estimates consequences of different treatment scenarios. For considering spatial dimension the model has been implemented into GIS. The model has been demonstrated in a 1,100 ha sized forest enterprise called Wittgenstein, located in steep terrain in the South of Lower Austria. One scenario analysed the improvement of forest road network. In this example fully mechanised systems replaced all partly ones. Emissions, damage on remaining stand and injury rate were decreasing. Contribution margin rose from 40 to 56 €/m³. As a result of higher demand of ground based systems impacts on soil were increasing. Nevertheless, the construction of the road has been looked up favourably. Another scenario determined the possible benefits of implementing “cable forwarders” as new harvesting technology. The implementation of this new system was recommended and the relevance of tower yarders was decreasing. Five of seven criteria could be improved; including a reduction of stand damage by 10 percent points and an increase of contribution margin from 40 to 46 €/m³.
- Betreuer: Stampfer Karl