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All Journal Jurnal Solum Jurnal Biologi Tropis
Romiyanto Romiyanto
Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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Dinamika Spasial Perubahan Penggunaan Lahan dan Potensi Lahan Pertanian pada Daerah Aliran Sungai Tropis: Studi Kasus Sub Das Melawi, Indonesia Gunadi Gunadi; Rini Hazriani; Romiyanto Romiyanto; Fitriana Fitriana
Jurnal Solum Vol 23 No 2 (2026): Jurnal Solum
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/solum.v23i2.336

Abstract

Land-use change within watersheds represents a major challenge for land resource management, as it impacts agricultural productivity, hydrological functions, and environmental sustainability. The Melawi Sub-watershed, part of the Kapuas Watershed, is experiencing land-use dynamics driven by plantation expansion, agricultural activities, and shifts in spatial utilization. This study aims to analyze land-use change dynamics in the Melawi Sub-watershed from 2022 to 2024, evaluate the presence of agricultural land within forest areas and Business Use Rights (HGU) zones, and identify potential agricultural land available for future development. The analysis utilized Sentinel-2 imagery processed on the Google Earth Engine platform using the Random Forest algorithm; subsequent spatial overlay analysis generated a land-use change matrix and identified land distribution across forest areas and HGU zones. The results indicate an increase in plantation area by 20,153.357 hectares, while mixed dryland agriculture and shrubland decreased by 26,879.009 hectares, signaling a conversion toward more intensive land use. Overlay results reveal that of the total 1,148,066.594 hectares of agricultural land, approximately 540,005.663 hectares (47.04%) are located within forest areas, and 99,339.002 hectares (8.65%) fall within HGU zones. After accounting for these areas, a potential 508,721.929 hectares (44.31%) of agricultural land remains available for sustainable agricultural development. Key words: Land Use Change, Melawi Sub-watershed, Sentinel-2
Identification of Rice Field Potential Using a Geographic Information System Approach in Sambas Regency Romiyanto Romiyanto; Leony Agustine
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11386

Abstract

Sustainable food cropland protection is similar to the system and process of planning and determining, developing, utilizing, guiding, controlling, and supervising sustainable food cropland and its areas. This study aims to determine the distribution and changes in the intended rice fields, especially in Sambas Regency, West Kalimantan Province. The research methodology refers to the Decree of the Director General of Agricultural Infrastructure and Facilities Number 14/KPTS/SR/B/01/2022 concerning Technical Guidelines for Recommendations for Sustainable Food Cropland Protection. The initial stage of implementation is collecting data from relevant agencies, then creating a work map, collecting field data (groundcheck) in the form of open camera photos at 4,213 points. Then, field data processing is carried out and then the preparation of updated raw rice field data. The results of the RPLP2B study in Sambas Regency show that based on the type of irrigation, rice fields in Sambas Regency are identified as technical irrigated rice fields with an area of ± 643.12 ha, non-technical irrigation ± 16,415.69 ha, and non-irrigated rice fields ± 26,976.67 ha, the area of rice fields with IP 100 reaches ± 10,091.15 ha, IP 150 covers an area of ± 5,614.59 ha, IP 200 covers an area of ± 27,943.68 ha, IP 250 covers an area of  ± 50.43 ha, and the area of land with IP 300 covers an area of ± 335.64 ha. The conclusion is that the potential of rice fields in Sambas Regency is as follows: Of the total 43,508.29 ha of raw rice fields, only 93.65% or 40,743.77 ha of rice fields have been identified, the remaining 6.35% consists of others, food fields, built-up areas and water bodies.
Co-Authors Fitriana Fitriana Gunadi Gunadi Leony Agustine Rini Hazriani