Monitoring the hydro-mechanical effects of vegetation cover on shallow landslide triggering: preliminary results from a case study in western Norway

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Publication Title
Monitoring the hydro-mechanical effects of vegetation cover on shallow landslide triggering: preliminary results from a case study in western Norway

Abstract
Rainfall-induced shallow landslides are amongst the most common gravitational mass movements on slopes in steep terrain. The use of vegetation as a nature-based solution for shallow landslide risk reduction is receiving increased attention in the scientific community. Until now, no studies on the effects of vegetation on slope stability have been conducted for Nordic conditions. Additionally, direct comparison between the hydrological conditions in a forest and a neighbouring open field has never previously been carried out in this region. To contribute to filling this knowledge gap, a monitoring program is installed, and field investigations are conducted in a natural slope in the Flåm valley, located in western Norway. The case study site is situated on a slope partially used as hayfield, and partially covered by deciduous forest. Both the hayfield and the forest are assessed to compare the effects of the presence of vegetation on slope stability. Herein, preliminary results are presented. A detailed analysis of the monitored variables and the laboratory test results must be carried out before to conclude on the effectiveness of the existing forest as a shallow landslide mitigation measure at the case study site.
Authors
Amanda DiBiagio; V. Capobianco; A. Oen; L. M. Tallaksen

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

B - Geohazards

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