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All Journal Journal of Degraded and Mining Lands Management Jurnal Silva Tropika
Santosa, Sigit Heru Murti Budi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Identifikasi Degradasi Tutupan Lahan dan Kerapatan Vegetasi di Kabupaten Murung Raya Melalui Algoritma NDVI: Identification of Land Cover Degradation and Vegetation Density in Murung Raya Regency Using the NDVI Algorithm Mangga, Anggy Septrya; Santosa, Sigit Heru Murti Budi; Setiawan, Bakti
Jurnal Silva Tropika Vol. 9 No. 2 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i2.41470

Abstract

ABSTRACT As a strategic upstream area of the Barito River, Murung Raya Regency currently faces serious environmental challenges due to massive land clearing and development activities. This study aims to analyze the condition and density of vegetation in Murung Raya Regency using the Normalized Difference Vegetation Index (NDVI) from 2023 Landsat 8 satellite imagery. The results show that the total study area is 20,211.68 Ha, which is heavily dominated by Non-Vegetation (44.19%) and Very Low Vegetation (44.18%) classes, totaling 17,864.54 Ha or 88.39% of the total area. Spatially, these low NDVI values strongly correlate with bareland, infrastructure networks, and land clearing activities. Meanwhile, high-density forest only accounts for 8.84%, primarily in the northern region. These findings emphasize the urgent need for spatial planning policy evaluation and forest area protection in the upstream to ensure the sustainability of ecological functions in the future.   Keywords: NDVI, Murung Raya, Vegetation Density, Landsat 8, Environmental Degradation.   ABSTRAK Sebagai wilayah hulu Sungai Barito yang strategis, Kabupaten Murung Raya saat ini menghadapi tantangan serius berupa degradasi lingkungan akibat aktivitas pembangunan dan pembukaan lahan yang masif. Penelitian ini bertujuan untuk menganalisis kondisi dan kerapatan vegetasi di Kabupaten Murung Raya menggunakan indeks vegetasi Normalized Difference Vegetation Index (NDVI) melalui citra satelit Landsat 8 tahun 2023. Hasil penelitian menunjukkan bahwa total luas wilayah studi adalah 20.211,68 Ha, yang didominasi secara masif oleh kelas Non-Vegetasi (44,19%) dan Vegetasi Sangat Rendah (44,18%), dengan total akumulasi mencapai 17.864,54 Ha atau 88,39% dari luas wilayah. Secara spasial, rendahnya nilai NDVI ini berkorelasi kuat dengan keberadaan area terbuka (bareland), jaringan infrastruktur, dan aktivitas pembukaan lahan (land clearing). Sementara itu, hutan dengan kerapatan tajuk tinggi hanya tersisa 8,84%, terutama di wilayah utara. Temuan ini menegaskan urgensi perlunya evaluasi kebijakan tata ruang dan perlindungan kawasan hutan di hulu untuk menjamin keberlanjutan fungsi ekologis di masa depan. Kata Kunci: NDVI, Murung Raya, Kerapatan Vegetasi, Landsat 8, Degradasi Lingkungan.
Soil erodibility in Sangarus Catchment area: Linking soil properties to land degradation and sustainable management strategies Siregar, Diyanti Isnani; Kusumandari, Ambar; Permadi, Dwiko Budi; Santosa, Sigit Heru Murti Budi
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10349

Abstract

Land degradation resulting from agricultural expansion is a significant issue in the Sangarus Catchment area of Lampung, Indonesia, particularly in the upstream region. The conversion of forests into intensive agricultural land has led to declines in soil physical properties and increases in erosion rates. This study aimed to analyze the magnitude of soil erodibility (K-factor) and to evaluate its relationship with soil physical properties, to inform targeted management strategies. The research employed a Land Mapping Unit (LMU) approach, collecting 47 soil samples across the catchment based on soil type, slope, and land cover overlays. The soil samples underwent laboratory analysis for texture, structure, organic matter, and permeability. The K-factor was calculated following the Wischmeier and Smith equation. The results indicated that soil erodibility values (K) in the Sangarus Catchment area ranged from 0.01 to 0.33, with the highest erodibility observed in the upstream area, particularly within mixed dryland agriculture land use. In contrast, secondary forests exhibited the lowest soil erodibility. Statistical analysis revealed that soil permeability was the most significant factor influencing erodibility, followed by other soil properties. These findings suggest that mitigation strategies for the upstream mixed dryland agriculture zones should prioritize Nature-Based Solutions (NBS). Combining agroforestry systems with the intensive application of organic amendments is recommended as a primary strategy. These approaches are essential for improving soil permeability and maintaining organo-mineral complexes, thereby restoring hydrological functions and ensuring the sustainability of the catchment against the risks of degradation.
Co-Authors Ambar Kusumandari Bakti Setiawan Diyanti Isnani Siregar, Diyanti Isnani Dwiko Budi Permadi Mangga, Anggy Septrya