Innovative Methods for Mapping the Suitability of Nature-Based Solutions for Landslide Risk Reduction

Innovative Methods for Mapping the Suitability of Nature-Based Solutions for Landslide Risk Reduction

Devananda Vijayananda Vivek, D.V. (IHE Delft Institute for Water Education)
Mubeen, A. (TU Delft BT/Environmental Biotechnology; IHE Delft Institute for Water Education)
Vojinovic, Z (IHE Delft Institute for Water Education)
Sanchez Torres, A (IHE Delft Institute for Water Education)
Paliaga, Guido (Geographical Information Systems International Group, Genova)
Fikri, Ahmad K. (Universiti Putra Malaysia)
Leitão, João P. (Swiss Federal Institute of Aquatic Science and Technology)
Manojlovic, Natasa (Hamburg University of Technology)
Fröhle, Peter (Hamburg University of Technology)

2023

The impacts of climate change are becoming more widespread across the world, with hydro-meteorological extreme events on the rise, causing severe threats to nature and communities. Increasing trends in the frequency and intensity of floods and landslides have been projected by climate models. This necessitates the development of more effective measures such as nature-based solutions (NBS) which can complement grey infrastructures. Recent studies have identified
knowledge gaps and limitations in existing research and tools that aid in spatial planning for the implementation of large-scale NBS and proposed new methodologies for the spatial allocation of largescale NBS for flood risk reduction. This work presents a novel method for mapping the suitability of NBS addressing geo-hydrological hazards such as shallow landslides, debris flow, and rockfall, which are typically caused due to slope instability. This methodology incorporates landslide susceptibility mapping, and was used to create a toolbox ESRI ArcGIS environment to aid decision-makers in the planning and implementation of large-scale NBS. The spatial allocation toolbox was applied to the case study Portofino promontory, Liguria region, Italy, and 70% of the area was found to be highly susceptible to landslides. The produced suitability maps show that 41%, 33%, and 65% of the study
area is suitable for the restoration of terraces, bio-engineering, and vegetative measures such as NBS for landslide risk reduction.

nature-based solutions
climate chang
afforestatio
suitability mapping
landslide risk reduction

http://resolver.tudelft.nl/uuid:dade2e92-816e-4bbb-9f9c-b041f6f3d9f2

https://doi.org/10.3390/land12071357

2073-445X

Land, 12 (7)

Institutional Repository

journal article

© 2023 D.V. Devananda Vijayananda Vivek, A. Mubeen, Z Vojinovic, A Sanchez Torres, Guido Paliaga, Ahmad K. Fikri, João P. Leitão, Natasa Manojlovic, Peter Fröhle