Author(s)

A. N. Matori & A. Basith

Abstract

Landslide is complex interactions involving various terrain parameters and caused by various causative factors, even though each of them may not be equally significant to the occurrences of landslide. Hence to produce an efficient landslide susceptibility map (LSM) it is crucial to decide whether to include all the causative factors or otherwise. This paper presents evaluation of the relative role of landslide causative factors from which an efficient landslide susceptibility model could be constructed. Ten factors are used in this study namely lithology, geology lineament, soil, road network, river/drainage, land use land cover, slope, slope aspect, curvature, and elevation. Several scenarios were used in which causative factors are used in the modeling of LSM. A number of final LSMs are produced as the result of applying the above different scenarios. From the assessment of the accuracy of the LSM produced, it could be concluded that involvement of all factors does not guarantee of producing accurate LSM. On the other hand, using only six significant factors which are soil type, distance from road (hence cut slope), proximity to river and lake and elevation produces more accurate LSM. Keywords: efficient landslide susceptibility modelling, Cameron Highlands.

Keywords

efficient landslide susceptibility modelling, Cameron Highlands.