GIS-Based Spatial Analysis of Landslide Risk in the Bango Sub-Watershed, Malang Regency
Keywords:
Bango Sub-Watershed, Geographic Information System, Landslide Risk, Malang Regency, Spatial Analysis
Abstract
Purpose of the study: This study aims to assess and map landslide risk zones in the Bango Sub-Watershed, Malang Regency, by integrating natural physical factors and human activities using a GIS-based spatial analysis to support effective disaster mitigation and regional planning.
Methodology: Primary data, including land use patterns, slope excavation, pond and drainage construction, and infrastructure development, were integrated with secondary data such as rainfall records (2005–2014), geological maps, soil type maps, land use maps, and historical earthquake data. Thiessen polygons and overlay techniques were applied in ArcGIS 10.1 to systematically quantify spatial variations in landslide susceptibility across the Bango Sub-Watershed.
Main Findings: The results show that most areas in the Bango Sub-Watershed are classified as low to medium landslide risk, while high-risk zones, associated with slopes greater than 40%, are confined to steep terrain with intensive human activity. The integration of environmental factors, including slope, rainfall, and soil type, with anthropogenic activities produces more detailed and reliable spatial risk maps, enabling targeted prioritization for mitigation measures and supporting improved disaster planning and management.
Novelty/Originality of this study: This research integrates multiple environmental and human activity datasets into GIS through the use of Thiessen polygons and overlay analysis, offering a more comprehensive and precise assessment of landslide risk than previous studies. The methodology provides a replicable framework for other similar watersheds, supporting enhanced disaster mitigation planning, informed land-use decisions, and evidence-based strategies for reducing potential damage in vulnerable areas.
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[16] M. A. Samad, K. Arifin, and A. Abas, “A systematic literature review on the challenges of Southeast Asian countries in natural disaster management,” Cogent Soc. Sci., vol. 11, no. 1, pp. 1–21, 2025, doi: 10.1080/23311886.2024.2435590.
[17] A. Dongzagla, I. Baddianaah, F. A. Avogo, and J. Tengbane, “Conformity of filling stations to safe distance guidelines in urban Ghana: A case study of the Wa Municipality,” Cogent Soc. Sci., vol. 9, no. 2, pp. 1–18, 2023, doi: 10.1080/23311886.2023.2282473.
[18] E. A. Muhtar, A. Abdillah, I. Widianingsih, and Q. M. Adikancana, “Smart villages, rural development and community vulnerability in Indonesia: A bibliometric analysis,” Cogent Soc. Sci., vol. 9, no. 1, pp. 1–25, 2023, doi: 10.1080/23311886.2023.2219118.
[19] J. N. Kimengsi and K. N. Agyingi, “Commercial botor bike transport and poverty reduction in the bamenda urban space, Cameroon,” Cogent Soc. Sci., vol. 8, no. 1, pp. 1–19, 2022, doi: 10.1080/23311886.2021.2014043.
[20] M. T. Macheka, “Environmental management and practises in Zimbabwe’ s Chivi district: A political ecology analysis,” Cogent Soc. Sci., vol. 7, no. 1, pp. 1–18, 2021, doi: 10.1080/23311886.2021.2000569.
[21] M. L. Hakim, Yushardi1, M. A. Mujib, S. Astutik, and A. Susiati, “Pemetaan potensi demam berdarah dengue berbasis weighted overlay di Kecamatan rejoso, Kabupaten Nganjuk [Mapping of dengue fever potential based on weighted overlay in Rejoso District, Nganjuk Regency],” Maj. Geogr. Indones., vol. 39, no. 2, pp. 173–182, 2025, doi: 10.22146/mgi.70636.
[22] A. P. Wicaksono and M. A. Khafid, “Karakterisasi longsor untuk analisis kerawanan bencana longsor di Baturturu, Kabupaten Gunungkidul [Landslide characterization for landslide disaster vulnerability analysis in Baturturu, Gunungkidul Regency],” Maj. Geogr. Indones., vol. 36, no. 2, pp. 119–125, 2022, doi: 10.22146/mgi.71857.
[23] A. W. Wijaya et al., “Analisis ekologi bentanglahan di Taman Nasional Baluran dan sekitarnya [Ecological analysis of landscapes in Baluran National Park and its surroundings],” Maj. Geogr. Indones., vol. 34, no. 1, pp. 34–32, 2020.
[24] E. Febriarta, D. Susanto, A. P. Wicaksono, and A. Larasati, “Kajian metode deterministik untuk zonasi kerawanan gerakan tanah di Labuan Bajo Nusa Tenggara Timur [Study of deterministic methods for landslide vulnerability zoning in Labuan Bajo, East Nusa Tenggara],” Maj. Geogr. Indones., vol. 36, no. 1, pp. 41–50, 2022, doi: 10.22146/mgi.63231.
[25] S. Suprayogi, S. H. M. B. S., T. Gunawan, R. Endarto, W. J. Prihantarto, and N. A. Widodo, “Kondisi hidrologi terkait dengan perubahan penggunaan lahan DAS Bedog Kabupaten Sleman [Hydrological conditions related to changes in land use in the Bedog Watershed, Sleman Regency],” Maj. Geogr. Indones., vol. 33, no. 2, pp. 29–36, 2019.
[26] J. C. E. Talakua and V. V. Tuerah, “Analisis spasial ketersediaan dan keterjangkauan fasilitas kesehatan untuk mendukung kesehatan wisata di Kecamatan Kuta [Spatial analysis of the availability and affordability of health facilities to support tourism health in Kuta District],” Maj. Geogr. Indones., vol. 39, no. 1, pp. 91–100, 2025, doi: 10.22146/mgi.70636.
[27] N. M. Sari, “Analisis sebaran bangunan dan kesesuaian dengan rencana tata ruang wilayah (RTRW) Provinsi DKI Jakarta [Analysis of building distribution and compliance with the regional spatial planning (RTRW) of DKI Jakarta Province],” Maj. Geogr. Indones., vol. 35, no. 2, pp. 133–141, 2021.
[28] R. Suharyadi, I. N. Hidayati, and W. Handayani, “Penyusunan basis data spasial fasilitas bangunan gedung bagi penyandang disabilitas [Compilation of a spatial database of building facilities for people with disabilities],” Maj. Geogr. Indones., vol. 34, no. 1, pp. 19–24, 2020.
[29] M. Alwi, A. Wahyu, N. Maharti, A. Rakhmadini, D. Prastiyawan, and M. Rakhmatika, “Pemetaan multi rawan bencana longsor, kekeringan, dan banjir di Kabupeten Semarang [Mapping of multi-hazard landslides, droughts, and floods in Semarang Regency],” Maj. Geogr. Indones., vol. 36, no. 1, pp. 19–31, 2022, doi: 10.22146/mgi.63231.
[30] H. S. Naryanto and Q. Zahro, “Penilaian risiko bencana longsor di wilayah Kabupaten Serang [Landslide disaster risk assessment in Serang Regency],” Maj. Geogr. Indones., vol. 34, no. 1, pp. 1–10, 2020.
Published
2026-03-06
How to Cite
Oktavia, M., & Lusiya, L. (2026). GIS-Based Spatial Analysis of Landslide Risk in the Bango Sub-Watershed, Malang Regency. GeoEdu Insight Journal, 1(1), 1-8. Retrieved from https://cahaya-ic.com/index.php/GEdlJ/article/view/2912
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Copyright (c) 2026 Maharani Oktavia, Lusiya Lusiya
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