TXT-tool 1.386-2.2 Practical approach to assessing the factors influencing landslide susceptibility modelling-the case of Slovenia

Abstract

This paper introduces and explains a landslide susceptibility assessment undertaken in Slovenia at two geographical scales: 1:25,000 for municipal spatial planning, and 1:250,000 for national strategic spatial planning and synoptic exposure assessment. The approach is designed to help analysts decide which influencing factors to include in the modelling of landslide susceptibility. Inclusion of too many factors may represent a challenge from the resources perspective, whereas too few factors may reduce the quality of the model. It explains the method used for the cases of Slovenia, and how to approach to modelling; which weight values to use for a specific factor if a weighting method is chosen; and how to assess the modelling errors. Explanations, guidance and discussion of potential drawbacks of the approach are given.