Assessing landslide susceptibility using geospatial technology in HSK Berembun Negeri Sembilan

Severinus, Bate (2024) Assessing landslide susceptibility using geospatial technology in HSK Berembun Negeri Sembilan. [Project Paper] (Submitted)

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Abstract

This study uses geospatial technology to assess landslide susceptibility in the HSK Berembun area. The methodology involves identifying key factors influencing landslide occurrence obtained from systematic literature review (SLR) and ranked to the importance using weighted analysis of the Analytical Hierarchy Process (AHP). Nine factors obtained from SLR and identified as existing in HSK Berembun have been analyzed to the rank for landslide susceptibility analysis. All 9 factors were modelled for a landslide susceptibility map (LSM) using linear weight combination (LWC). To confirm the developed map, 6 plots were established in HSK Berembun for validation. In addition, temporal land use and land cover (LULC) maps before and after the landslide incident were established to validate the LSM. The AHP ranking based on the SLR prioritizes slope (30.7%), followed by distance to the river (21.5%), aspect (14.6%), and distance to road (9.5%). While elevation, NDVI, and rainfall share equal priority at 5.8% each, curvature (3.7%) and TWI (2.5%) have the lowest priorities. After ranking the entire factor using the AHP method, the consistency ratio for this study is 1.8%. The nine factors then used to develop LSM by using the GIS software. The result of the LSM was compared with the 6 plots of ground thruting. Plot 3, 4, 5 and 6 shows that the area has a high risk for the landslide to occur, confirmed with the landslide scar clearly seen from the ground thruting and LULC map. Meanwhile, plots 1 and 2 lie in the moderate to high range of the LSM. From the ground thruting validation, the vegetation in that area is quite dense, which means the risk of landslides to occur is lower compared to the four others plot. The results of this study contribute to the understanding and managing landslide susceptibility in the HSK Berembun area, providing valuable insights for prevention and mitigation efforts.

Item Type:	Project Paper
Faculty:	Fakulti Perhutanan dan Alam Sekitar
Depositing User:	Ms. ROHANA ALIAS
Date Deposited:	13 May 2024 07:12
Last Modified:	01 Aug 2024 08:34
URI:	http://psaspb.upm.edu.my/id/eprint/1766

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