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All Journal Global Forest Journal
Suranto
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Materials Science & Nanotechnology

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Assessing residential land cover dynamics in Medan Deli Sub-district, Medan City from 2014 to 2024 using GIS technology Syahru Ramadhan; Rahmawaty; Abdul Rauf; Siti Aekbal Salleh; Mohd Hasmadi Ismail; Agus Purwoko; Razali; Suranto
Global Forest Journal. Vol. 4 No. 2 (2026): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v4i2.22160

Abstract

Urban growth in Medan Deli Sub-district has intensified demand for settlement land and increased pressure on remaining non-built-up land. This study quantified settlement land cover dynamics in 2014, 2019, and 2024 using Landsat 8 Collection 2 surface reflectance imagery processed in Google Earth Engine and GIS-based post-classification comparison. Seven land cover classes were interpreted: water body, mixed garden, open land, mangrove, settlement, shrubs, and pond. The settlement class remained dominant in all observation years and increased from 1,443.67 ha (74.27%) in 2014 to 1,446.04 ha (74.39%) in 2019 and 1,505.77 ha (77.46%) in 2024. The net settlement expansion during 2014-2024 was 62.10 ha, with the largest gross conversions to settlement originating from open land (114.43 ha), mixed garden (46.65 ha), shrubs (16.96 ha), mangrove (4.29 ha), pond (1.52 ha), and water body (1.17 ha). The change matrix also shows that 122.93 ha of land classified as settlement in 2014 shifted to other classes by 2024, indicating heterogeneous urban land-cover dynamics rather than one-directional expansion alone. These results highlight the need to limit settlement growth, protect green and water-sensitive areas, and incorporate remote-sensing-based monitoring into urban spatial planning in coastal Medan
Land-use change and human-elephant conflict in Sumatran Elephant Conservation Ari Iswandari; Gopinda Fernandes; Ade Mudaha Putra; Reza Fitra Nanda; Suranto; Rahmawaty
Global Forest Journal. Vol. 4 No. 2 (2026): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v4i2.25885

Abstract

This review aims to explore human-elephant conflict in the context of Sumatran elephant conservation, accounting for the impacts of land-use change and elephants' ability to move freely. The researchers used a method for identifying and selecting information from a large database, Scopus, which they accessed on May 16, 2026. They followed a series of steps to choose the studies, including checking document types and the content of the information, and arrived at 31 studies from different countries. They also used VOSviewer to visualize relationships among various topics. The main finding of this review is that human-elephant conflict is the most significant problem, and the key challenge is achieving peaceful coexistence. They saw that most of the information about this problem comes from India and China. There is not as much information from Indonesia and Sumatra. The review says the problem with Sumatran elephants is not that they raid crops, but how land is used and how the elephants can move. To help save the Sumatran elephants, it suggests people should use computer models to predict where problems will occur, study how the elephants move, and involve the local community in reporting problems and setting up warning systems.
Co-Authors Abdul Rauf Ade Mudaha Putra Agus Purwoko Ari Iswandari Gopinda Fernandes Mohd Hasmadi Ismail Rahmawaty, Rahmawaty Razali Reza Fitra Nanda Siti Aekbal Salleh Syahru Ramadhan