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All Journal Journal of Geoscience, Engineering, Environment, and Technology
Setia Ritma Pamungkas, Helmi
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Earth & Planetary Sciences Engineering Environmental Science Physics

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A Review of Critical Land in Areas Dominated by Volcanic Deposits to Support Local Ecosystem Rehabilitation Planning Setia Ritma Pamungkas, Helmi; Purwanti , Heny; Ali, Noorwirdawati; Mardlotillah Yogaswara, Laila; Trilusianthy Hidayat , Janthy; Vahiraeni, Refina
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
Publisher : UIR PRESS

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Volcanic-derived Lithosol soils dominate North Bogor District and are inherently susceptible to erosion due to their shallow profiles and limited capacity to retain water. Combined with increasing urban land-use pressures, these conditions contribute to land degradation and the development of potentially critical land. This study aims to assess the spatial distribution of potentially critical land and formulate ecosystem-based rehabilitation strategies for sustainable land management in North Bogor District. The assessment followed a GIS-based critical land evaluation framework adapted from the national guideline for critical land assessment. GIS overlay analysis was applied to integrate land cover, soil characteristics, and land management parameters, while erosion susceptibility was evaluated using the Universal Soil Loss Equation (USLE) approach. The results indicate that potentially critical land is primarily associated with volcanic-derived Lithosol soils and areas experiencing moderate to very slight erosion hazards. These areas represent priority zones for rehabilitation because their geological characteristics increase vulnerability to ongoing land degradation. Ecosystem-based rehabilitation strategies, including the establishment of locally adapted vegetation species and the implementation of contour terracing, are recommended to reduce erosion risks, improve environmental resilience, and restore land functions. This study provides an integrated framework that links geological vulnerability, erosion susceptibility, and ecosystem-based rehabilitation for prioritizing land restoration efforts, thereby supporting sustainable land management and urban environmental planning in volcanic landscapes.
Multi-Criteria Geological Assessment for Geosite Prioritization in the Alteration Zone of Bogor Halimun Salak Geopark, West Java, Indonesia Setia Ritma Pamungkas, Helmi; Soesilo, Joko; Paripurno, Eko Teguh; Choiriah, Siti Umiyatun; Kadarisman, Denny Sukamto; Hilal, Syaiful; Firmansyah, Yudi; Pamungkas, Prambudhianto Putro; Abduhu, Nur Rizqih
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 3 (2026): Articles In Press Vol 11 No 3 2026
Publisher : UIR PRESS

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The sustainable development and conservation of geosites require an assessment that distinguishes geoheritage value from the physical capacity of land to support safe use. This study evaluates ten geosites in the hydrothermal alteration zone of the Bogor Halimun Salak Geopark, West Java, Indonesia, using an integrated multi-criteria geological framework. The Geological Agency scheme was modified by exchanging the weights assigned to groundwater availability (14 to 2) and soil-rock bearing capacity (2 to 14), while retaining the total supporting-factor weight. This modification was adopted because the original output was dominated by the hydrogeological pattern, whereas engineering suitability in clay-rich alteration zones is more directly controlled by material strength and stability. GIS overlay, laboratory-derived engineering-geology information, and field verification were used to integrate lithology, slope, bearing capacity, aquifer productivity, landslide susceptibility, and land-use constraints. The modified scheme expanded the high-suitability area from 2,673.88 to 5,898.13 ha, reduced the moderate class from 9,802.93 to 5,552.50 ha, and increased the low class to 2,985.28 ha, thereby improving spatial discrimination. Two geosites were classified as high suitability, two as moderate suitability, and six as low suitability. High-suitability sites are generally associated with competent volcanic rocks, gentle slopes, and relatively high bearing capacity, whereas low-suitability sites commonly occur in clay-rich altered materials with high plasticity, shrink-swell behaviour, and landslide constraints. The framework supports decision-making by separating locations suitable for controlled facilities from sites requiring restricted development and conservation-oriented management.
Co-Authors Abduhu, Nur Rizqih Ali, Noorwirdawati Choiriah, Siti Umiyatun Eko Teguh Paripurno Hilal, Syaiful Kadarisman, Denny Sukamto Mardlotillah Yogaswara, Laila Pamungkas, Prambudhianto Putro Purwanti , Heny Soesilo, Joko Trilusianthy Hidayat , Janthy Vahiraeni, Refina Yudi Firmansyah