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Decision support with GIS
Geographical information systems can help to aid in decision making in a variety of
ways. A first approach is the creation of suitability or hazard maps. They show which locations or areas
are particularly well suited for a specific purpose, or those which are specifically threatened by a hazard.
Most decision support situations consider multiple decision criteria. For creation of a wolf protection zone,
criteria such as vegetation form or density of prey could be considered. However, often the claims of various
stakeholders should be taken into consideration before a decision is made. This may lead to conflicting
objectives. For example, a mountain valley cannot be both a protected area and a ski resort.
Many aspects of 
decision support with GIS appear for the
first time in this unit and are revisited and deepened in the following units.
Learning Objectives
- You can explain the difference between decision support with multiple criteria and with multiple objectives in your own words.
- You know the concept of suitability maps and you are able to interpret suitability maps in terms of decision support.
- You are able to derive and to operationalize criteria from a text for a simple GIS based decision support model.
- With the help of an example you can identify the limitations of the multi-criteria evaluation (MCE) and the decision support with multi-objective evaluation (MOE)
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