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All Journal Jurnal Hutan Tropika
Rizki Auliansyah Putra, Rizki Auliansyah
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry

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Analisis Sifat Kimia dan Fisika Lahan Gambut pada Areal Sekitar Laboratorium Terpadu Universitas Palangka Raya Kalimantan Tengah: Analysis of the Chemical and Physical Properties of Peatland in the Area Surrounding the Laboratorium Terpadu Palangka Raya University Central of Kalimantan Trianingtyas, Andhira; Rahmawati, Reni; Putir, Patricia Erosa; Samad, Radhiatunnisa S; Putro, Dhymas Sulistyono; Hartati, Bunga Resa; Putra, Rizki Auliansyah
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23821

Abstract

Peatlands are important ecosystems that play a crucial role in maintaining environmental balance, particularly in tropical regions such as Palangka Raya, Central of Kalimantan. This study aims to identify the physical and chemical characteristics of peat soils surrounding the Laboratorium Terpadu area at Palangka raya University, to support sustainable land management and campus environmental conservation. The results indicate that the peat soils at the site have a high water content (111.1%) and low bulk density (0.22 g/cm³), reflecting saturated, porous soil with a potential risk of subsidence if hydrological conditions are altered. Soil chemical properties show a pH of 4.3, indicating high acidity with low nutrient availability, and reflecting a relatively natural ecosystem. These physical and chemical characteristics have important implications for land use planning, vegetation cultivation, and campus spatial development, emphasizing the need for amelioration strategies, proper fertilization, and construction techniques that account for soil subsidence risks. This study provides a scientific basis for the wise and sustainable management of peatlands within the campus environment.
Stagnasi Skema Hutan Tanaman Rakyat di Kabupaten Barru, Sulawesi Selatan: Stagnation of Community Plantation Forest in Barru Regency, South Sulawesi S. Samad, Radhiatunnisa; Samad, Sofyan; Rusadi, Nusrah; Trianingtyas, Andhira; Hartati, Bunga Resa; Putra, Rizki Auliansyah; Putro, Dhymas Sulistyono
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23973

Abstract

The Community Plantation Forest (CPF) program was established as a policy instrument to expand community access to forest management, support forest rehabilitation, and improve local livelihoods. However, its implementation in Barru Regency, which holds one of the largest allocations of HTR permits in South Sulawesi, has remained stagnant since the early phase of the program. This study aims to identify the factors influencing the implementation of HTR management and to examine community interest in the program. Data were collected through field observations and interviews conducted with Forest Farmer Group’s (FFGs) using a key informant sampling method. The factors affecting policy implementation were analyzed across five dimensions: policy, institutional arrangements, stakeholders, human resources, and forest resources. The findings indicate that strengthening community capacity and institutional structures, enhancing stakeholder collaboration, and implementing consistent monitoring and evaluation mechanisms are essential to improving the performance and long-term sustainability of the HTR program in Barru Regency.
Pemantauan Dinamika Land Surface Temperature dan Indeks Spektral (NDVI) Menggunakan Landsat ETM+ dan OLI/TIRS di Lanskap Jember Selatan: Monitoring Land Surface Temperature and Spectral Indices (NDVI) Dynamics Using Landsat ETM+ and OLI/TIRS in the Southern Jember Landscape Sholihah, Rizqi I'anatus; Putra, Rizki Auliansyah; Santosa, Lenalda Febriany; Atmadja, Krisologus Genesa Ruby; Wulandari, Verlina Intan; Rahman, Basuki; Islami, Muflihatul Maghfiroh; Kusneti, Monica
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.24103

Abstract

Landscape transformation driven by rapid urbanization is a primary determinant of microclimate change in peri-urban regions. This study aims to analyze the spatiotemporal dynamics of land surface temperature (LST) and its relationship with vegetation density (Normalized Difference Vegetation Index/NDVI) in the Southern Jember landscape. Utilizing Landsat 7 ETM+ and Landsat 8 OLI/TIRS imagery from 2001, 2013, and 2025, this research evaluates the impact of land cover changes on the regional thermal regime and vegetation index variability. The results reveal a fundamental landscape transition, where the dominance of paddy fields shrank drastically from 66.400 ha (2001) to 13.800 ha (2025), replaced by a massive expansion of settlements reaching 82,900 ha. This shift triggered a significant surface urban heat island (SUHI) phenomenon. Settlement areas recorded an extreme maximum LST of 38,1°C in 2025, a sharp increase compared to the initial study period. Spectral analysis confirms that the rise in LST has a negative correlation with NDVI. This evidence suggests that the loss of vegetation biomass and the increase in impervious surfaces due to uncontrolled urbanization are the primary drivers of environmental warming in South Jember. These findings underscore the urgency of climate-mitigation-based spatial planning strategies for regional sustainability.
Co-Authors Atmadja, Krisologus Genesa Ruby Dhymas Sulistyono Putro Hartati, Bunga Resa Islami, Muflihatul Maghfiroh Kusneti, Monica Patricia Erosa Putir, Patricia Erosa Rahman, Basuki Rahmawati, Reni Rusadi, Nusrah S. Samad, Radhiatunnisa Samad, Radhiatunnisa S Santosa, Lenalda Febriany Sholihah, Rizqi I'anatus Sofyan Samad, Sofyan Trianingtyas, Andhira Wulandari, Verlina Intan