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All Journal BHUMI: Jurnal Agraria dan Pertanahan Journal of Geographical Sciences and Education
Whidayanti, Ella
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Agriculture, Biological Sciences & Forestry Astronomy Education Law, Crime, Criminology & Criminal Justice Social Sciences

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Kajian Spasial Perubahan Luas dan Kerapatan Mangrove terhadap Abrasi di Desa Pejarakan, Buleleng Whidayanti, Ella; Handayani, Tuty
Journal of Geographical Sciences and Education Vol 3 No 1 (2025): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v3i1.202

Abstract

The coastal village of Pejarakan, adjacent to West Bali National Park, has a fairly extensive mangrove ecosystem. Mangrove ecosystems have an important role as a protector of the coastline due to abrasion and accretion. Alterations in mangrove ecosystems along the coast of Pejarakan Village, caused by oceanographic factors and land-use changes, lead to changes in the coastline. This study aims to determine the relationship between changes in mangrove area and density to abrasion in Pejarakan Village within five years. The data needed in this study are remote sensing data of Landsat 8 OLI/TIRS satellite imagery in 2015 and 2020, analyzed using NDVI and single-band threshold methods. The results of this study show that the mangrove area along the coastline of Pejarakan Village has changed in mangrove coverage of 25.77 hectares, with an increasing level of density. These changes affect the occurrence of abrasion and accretion which results in changes in the coastline along the coastal coast of Pejarakan Village.
Aplikasi Pemodelan 3D untuk Memprediksi Daerah Rawan Banjir: Studi Kasus Kampus Universitas Indonesia di Depok Whidayanti, Ella
Journal of Geographical Sciences and Education Vol 3 No 2 (2025): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v3i2.215

Abstract

A 3D Modelling is a process of generating three-dimensional objects that can be presented in visual form. Geographic Information Systems (GIS) play a crucial role in modelling hydrological phenomena, including floods. Flooding can significantly impact infrastructure and community activities, including those at the Universitas Indonesia (UI) Depok Campus. GIS-based 3D modelling serves as an effective method for analyzing and predicting potential flood risk areas. This study aims to create a 3D model to visualize flood-prone areas within the UI Depok Campus. It processes Digital Elevation Model (DEM) and Triangulated Irregular Network (TIN) data as the foundation for 3D flood inundation. The model simulates water overflow based on extreme rainfall scenarios and drainage capacity. Results indicate that certain areas within the UI Depok Campus, particularly in the north, are highly prone to flooding during heavy rainfall. These impacts can be mitigated through the design of effective mitigation strategies, the development of adaptive infrastructure, and the formulation of responsive, data-driven policies.
Analysis of Land Cover Change in Relation to the Urban Heat Island Phenomenon using Remote Sensing and GIS Technology in South Jakarta, Indonesia Whidayanti, Ella; Labib, Muhammad Syauqi; Novani, Nabilah Rizki; Hazani, Syahla Nuzla; Akyas, Muhammad
Journal of Geographical Sciences and Education Vol 3 No 3 (2025): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v3i03.291

Abstract

The Urban Heat Island (UHI) phenomenon is one of the most significant environmental impacts resulting from land cover changes in urban areas. This study aims to analyze the relationship between land cover change and the UHI phenomenon in South Jakarta through the use of remote sensing and Geographic Information System (GIS) technologies. The data used comprise Landsat-8 OLI/TIRS from 2015 to 2018 to generate NDVI, NDWI, NDBI, Land Cover, and Land Surface Temperature (LST) indices. Pearson correlation test was also conducted to determine the variables that most influence the UHI phenomenon. The land cover changes, particularly the expansion of built-up areas and the reduction of vegetation—directly contribute to an increase in surface temperature. The correlation analysis reveals that NDBI consistently exerts the strongest influence on UHI (0.55), followed by NDWI (0.21) and NDVI (0.18). This research underscores the critical importance of land-use regulation as a strategic approach to mitigating UHI in urban environments.
Hydrological Characteristics and Water Quality Assessment of Ci Jarian River in Bojonggaling Village, Cimandiri Sub-Watershed Whidayanti, Ella; Mumtaz, Muhamad Fikri
Journal of Geographical Sciences and Education Vol 3 No 4 (2025): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v3i4.338

Abstract

Watersheds play a crucial role in the ecohydrological system. However, land use change has reduced the hydrological function and water quality in many rural areas. This study aims to analyze the hydrological characteristics and water quality of the Ci Jarian River. The river discharge measurement method at six locations using the velocity-area method was applied and accompanied by water quality analysis based on Total Dissolved Solids (TDS), pH, and Electrical Conductivity (EC) parameters. The Ci Jarian River has an influent-intermittent flow type with a dendritic pattern and variations in valley morphology from a V-shape in the upstream to a U-shape in the downstream. The flow rate ranges from 43-286 m3/s at all observation points. TDS and EC values ​​increase from upstream to downstream, indicating the accumulation of dissolved substances due to agricultural runoff and domestic waste. Meanwhile, the pH tends to be neutral to slightly alkaline (6.8-8.5), which is still within the category of suitable water according to the Minister of Health and WHO Regulations. This study emphasizes the importance of watershed management based on sustainable land use in rural areas.
The Implications of Land Use Dynamics on Land Disputes in Depok City, West Java Whidayanti, Ella
BHUMI: Jurnal Agraria dan Pertanahan Vol. 11 No. 2 (2025): Bhumi: Jurnal Agraria dan Pertanahan
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Sekolah Tinggi Pertanahan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31292/bhumi.v11i2.836

Abstract

Abstract: Land use dynamics represent an inevitable phenomenon in the process of urban development. The large-scale conversion of land in Depok City, West Java, has triggered various issues, particularly concerning land tenure, land use practices, and the emergence of land disputes—especially on particuliere lands, whose legal status remains ambiguous due to historical and administrative complexities. This phenomenon has significant implications for spatial and environmental sustainability and also exacerbates social tensions and conflicts related to land ownership. This study seeks to analyze the correlation between land use transformation and the rising frequency of land disputes in Depok City, while also identifying effective and equitable mechanisms for conflict resolution. This study employs a qualitative case study approach that integrates secondary data analysis and in-depth interviews to understand the dynamics of land tenure conflicts. The primary issue identified lies in the structural imbalance between escalating land demand and the limited supply of available land parcels within the urban landscape. Land disputes may be addressed through two primary pathways: litigation processes within judicial institutions and alternative non-litigation mechanisms that emphasize cooperative approaches outside formal legal proceedings. With the increasing complexity of land-related conflicts, alternative dispute resolution mechanisms—such as consultation, negotiation, mediation, conciliation, and expert evaluation—have become increasingly pertinent and contextually appropriate. The findings of this study indicate that land disputes in Depok City are driven by land imbalance and weak governance, with non-litigation settlements offering a more efficient and equitable approach that serves as the basis for adaptive land policy recommendations. Keywords: Land Use Dynamics, Land Disputes, Depok City.
Co-Authors Akyas, Muhammad Hazani, Syahla Nuzla Labib, Muhammad Syauqi Mumtaz, Muhamad Fikri Novani, Nabilah Rizki Tuty Handayani