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All Journal International Journal of Public Health Science (IJPHS) Indonesian Journal of Geography PROSIDING SEMINAR NASIONAL Al-sihah: The Public Health Science Journal Gorontalo Journal of Public Health KESMAS UWIGAMA: Jurnal Kesehatan Masyarakat Insan Cita Jurnal Pengabdian Kepada Masyarakat Nusantara Science and Technology Proceedings AloHA International Journal of Health Advancement (AIJHA) Jurnal Olahraga dan Kesehatan Indonesia (JOKI) Ahmar Metastasis Health Journal (AMHJ) Journal of the Civil Engineering Forum Jurnal Rekam Medis dan Manajemen Informasi Kesehatan Jurnal Teknik Sumber Daya Air Berita Kedokteran Masyarakat Jurnal Teknik Sipil Svāsthya: Trends in General Medicine and Public Health
Ririn Pakaya
Universitas Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Transportation

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Journal : Journal of the Civil Engineering Forum

 1 
Analysis of Spatial Distribution of the Drought Hazard Index (DHI) by Integration AHP-GIS-Remote Sensing in Gorontalo Regency Muhammad Ramdhan Olii; Aleks Olii; Ririn Pakaya
Journal of the Civil Engineering Forum Vol. 8 No. 1 (January 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1802.066 KB) | DOI: 10.22146/jcef.3595

Abstract

Several regions across the world are presently experiencing a continuous increase in water scarcity due to the rise in water consumption resulting from population development, agricultural and industrial expansion, climate change, and pollution. Droughts are increasing in recurrence, severity, duration, and spatial extent as a result of climate change. Drought will be one of the most serious threats posed by climate change, often in conjunction with other effects such as rising temperatures and shifting ecosystems. Therefore, this study analyzes the spatial distribution of the Drought Hazard Index (DHI) by integrating AHP-GIS-Remote Sensing in Gorontalo Regency. AHP was used to determine the significance of each map as an input parameter for the DHI, while GIS-Remote Sensing was utilized to supply and analyze all input maps and the study outcome. The DHI assessment consists of four criteria, namely with Normalized Difference Vegetation Index accounting for the highest proportion at 42.9%, followed by Land Surface Temperature (33.6%), Normalized Difference Moisture Index (16.8%), and Topographic Wetness Index (6.7%), with the consistency of the underlying expert opinion measured by the consistency ratio of 0.048. The results indicated that the general hazard of drought in the Gorontalo Regency area was low (43.53%), with 17.87% of the whole area experiencing high hazard. The high class of drought was discovered to be centered in the central region of Gorontalo Regency, which was mostly used for agricultural and economic purposes, thereby enabling policymakers to have evidence to develop management policies suitable for local conditions. Therefore, despite the limits of climatology data, this study established the value of satellite-derived data needed to support policymakers in guiding operational actions to drought hazards reduction.
Transformation of Geospatial Modelling of Soil Erosion Susceptibility Using Machine Learning Olii, Muhammad Ramdhan; Nento, Sartan; Doda, Nurhayati; Olii, Rizky Selly Nazarina; Djafar, Haris; Pakaya, Ririn
Journal of the Civil Engineering Forum Vol. 11 No. 2 (May 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.19581

Abstract

Soil erosion presents substantial environmental and economic challenges, especially in areas prone to land degradation. This study assesses the use of Machine Learning (ML) methods—Support Vector Machines (SVM) and Generalized Linear Models (GLM)—to model Soil Erosion Susceptibility (SES) in the Saddang Watershed, Indonesia. It incorporates environmental, hydrological, and topographical factors to improve prediction accuracy. The approach includes multi-source geospatial data collection, erosion inventory mapping, and relevant factor selection. SVM and GLM were applied to classify SES, with performance evaluated using accuracy, AUC, and precision metrics. Results show SVM classified 40.59% of the area as moderately susceptible and 38.50% as low susceptibility. GLM identified 24.55% as very low and 38.59% as low susceptibility. Both models demonstrated high accuracy (SVM: 87.4%, GLM: 87.2%) and strong AUC values (SVM: 0.916, GLM: 0.939), though GLM showed better specificity and recall. Feature importance analysis highlights that GLM favors hydrological factors like river proximity and drainage density, while SVM balances across various environmental inputs. These findings affirm the value of ML-based geospatial modeling for SES assessment, supporting interventions such as reforestation and erosion control. SVM is suitable for localized planning, whereas GLM offers strategic-level insights. This research contributes to advancing environmental modeling by embedding domain knowledge into ML frameworks, and suggests future work integrate real-time remote sensing and more sophisticated models for broader SES prediction.
Co-Authors Adam, Rono Aleks Olii Aleks Olii Anshari, Erwin Apriyani Apriyani Arda, Zul Adhayani Baba, Julfa Daud Sandalayuk Djafar, Lisa Doda, Nurhayati Firdausi Ramadhani Firdausi Ramadhani, Firdausi Franning Deisi Badu Franning Deisi Badu, Franning Deisi Hanapi, Sunarti Hano, Yanti Hz Hano, Yanti Hz Hano, Yanti Hz. Haris Djafar, Haris Hatta, Herman Hera Nirwati Hidayat, Andi Sahrul Hippy, Mohamad Alfandi Isnaen Muhidin, Moh. Iyou, Ismelda Laiya, Marlina Lutfan Lazuardi Maliki, Lun Irmawati Maria Kanan Nento, Sartan Nurhayati Nurhayati Nuryani Nuryani Olii, Aleks Olii, Muhammad Ramdhan Olii, Rizky Selly Nazarina Paramata, Yeni Putra Olii, Muh. Yasin Umsini Rahmawati, Rahmawati Saliko, Maxidin Sandalayuk, Marselia Santoso, Triyadi Wahyuni Hafid, Wahyuni Yanti Hz. Hano Yasin, Maesarah