Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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The Influence of Agricultural Extension Services and Livelihood Capitals on Farmers\u27 Climate Resilience in West Java, Indonesia: A Structural Equation Modeling Approach
No full textThis study analyzes how agricultural extension services and various forms of livelihood capital influence rice farmers\u27 climate resilience and farm sustainability in West Java, Indonesia. 371 Karawang and Subang Regencies respondents were surveyed using a structured questionnaire covering farmers engaged in intensive and semi-intensive rice production systems. The study employed Structural Equation Modeling using Partial Least Squares (SEM-PLS) to assess the direct and indirect effects of human, social, natural, financial, and physical capitals and extension services on resilience capacity and farming sustainability. The results show that human capital, natural capital, social capital, financial capital, and extension services all significantly positively affect resilience capacity. In turn, resilience capacity is a key mediating variable contributing to farm sustainability. Among the variables analyzed, agricultural extension services strongly influenced sustainability outcomes. Furthermore, the Importance-Performance Map Analysis (IPMA) reveals that financial and natural capital are high-priority areas for intervention due to their strategic influence and current performance gaps. These results underscore the need to enhance farmer access to inclusive and adaptive financial services, improve natural resource governance, and strengthen the quality and contextual relevance of agricultural extension. The study recommends a shift toward a pluralistic and resilience-oriented extension model that integrates local knowledge, livelihood assets, and climate adaptation strategies to build sustainable and climate-resilient farming systems
Bioassay the Composition of the Organic Pot as a Container Media for Balsa (Ocrhoma bicolor Rowlee) Growth in Nursery
Full text linkForestry plant seedling production uses non-eco-friendly polybags. Organic pots are a solution that can be applied. This research aimed to analyze the composition and size of raw materials in organic pots for balsa growth and to examine the composition of raw materials in organic pots appropriate for balsa growth. This study used a factorial complete randomized design (CRD). There are two factors: the organic pot composition factor (A) and the mesh size factor (M). The observed parameters included the C/N ratio of organic pots, height, diameter, biomass, and plant chlorophyll content. The results showed that the highest percentage decrease in the C/N ratio was found in the A3M2 treatment. The highest average value of balsa plant growth was found in the A3M2 treatment (15% newspaper, 80% goat manure, 5% cocopeat, and ten mesh material size). The highest chlorophyll content was found in A3M1 treatments (15% newspaper, 80% goat manure, 5%cocopeat, five mesh material size). Organic pots with low C/N ratio values had higher average increases in height and diameter of plants compared to organic pots with high C/N ratio values. The optimal composition of the organic pot in this study was the A3M2 treatment. 
Power Struggles and Conflict Visibility in Contested Political Forests: A Case Study in Sukaslamet Village, Indramayu Regency, Indonesia
Full text linkKonflik tenurial hutan telah menjadi masalah di wilayah kelola Perhutani selama puluhan tahun. Dualitas dalam memandang hak atas tanah antara Perhutani dari sisi hukum dan masyarakat dari sisi historis penguasaan menjadi narasi yang terus diperdebatkan dan sulit untuk diselesaikan. Penelitian ini bertujuan untuk menggambarkan dinamika lokal konflik penguasaan hutan melalui bukti-bukti empiris lintasan sejarah penguasaan hutan di wilayah kelola Perhutani di Indramayu. Studi ini menyajikan studi kasus peristiwa konflik tenurial dalam kerangka penilaian visibilitas konflik dan pendekatan Actor-Centerd Power (ACP) dalam analisisnya. Hasil penilaian visibilitas konflik menunjukkan gradasi dan historiografi konflik tenurial hutan di wilayah kelola Perhutani dan menghasilkan beberapa temuan penting untuk melengkapi literatur konflik tenurial hutan. Temuan penelitian menunjukkan bagaimana pergeseran kekuatan aktor menyebabkan perubahan konflik tenurial hutan di Indramayu. Terakhir, penetapan kebijakan KHDPK sebagai upaya penyelesaian konflik dapat menimbulkan kontestasi baru dengan mengundang aktor-aktor kuat lainnya.Forest tenure conflicts have been a problem in Perhutani\u27s management areas for decades. As an entity authorized to manage, exploit, and protect most of the forest areas in Java, Perhutani\u27s forest management is not free from land occupation issues. The duality in viewing land rights between Perhutani from the legal side and the community from the historical side of control is a narrative that continues to be debated and is challenging to resolve. This study aims to describe the local dynamics of forest tenure conflicts through empirical evidence of the historical trajectory of forest tenure in the Perhutani management area in Indramayu. Using a qualitative research method, this study presents case studies of land tenure conflict events within the framework of conflict visibility assessment and the Actor-Centered Power (ACP) approach in its analysis. The results of the conflict visibility assessment show the gradation and historiography of forest tenure conflicts in Perhutanimanaged areas and produce several important findings to complement the forest tenure conflict literature. The research findings show how shifts in actor power led to changes in forest tenure conflicts in Indramayu. Finally, the establishment of the Forest Areas with Special Management policy as an effort to resolve conflicts can cause new contestations by inviting other powerful actors. 
Changes Detection of Mangrove Vegetation Area in Banyak Islands Marine Natural Park, Sumatra, Southeast Asia
Full text linkSalah satu ekosistem pesisir yang paling produktif adalah hutan bakau, yang memberikan berbagai keuntungan ekologis. Oleh karena itu, penting untuk mengidentifikasi dengan akurat wilayah vegetasi bakau guna melestarikan, mempertahankan, dan mengatur program pengembangan regional dari sudut pandang lingkungan. Untuk melacak perubahan luas vegetasi bakau di Pulau Tuangku (Taman Alam Laut Kepulauan Banyak/BIMNP) antara tahun 2010 dan 2020, studi ini menggunakan citra Landsat dan ALOS PALSAR. Melalui platform Google Earth Engine (GEE) dan kombinasi indeks spektral (NDVI, NDMI, MNDWI, dan MVI) diperiksa menggunakan klasifikasi hutan acak (random forest classification) berbasis tree-based Machine Learning Algortithm. Berdasarkan hasil studi ini, total estimasi luas hutan bakau adalah 818,21 ha pada tahun 2010, 939,91 ha pada tahun 2015, dan 899,96 ha pada tahun 2020. Luas vegetasi bakau meningkat sepanjang pemrosesan citra ALOS PALSAR dari tahun 2010 hingga 2015, namun mengalami penurunan antara tahun 2015 dan 2020. Hasil studi ini dapat membantu BIMNP dalam mengembangkan ekowisata yang bertanggung jawab secara lingkungan di area yang dilindungi.The mangrove ecosystem in the Banyak Islands faces urgent challenges due to environmental pressures, highlighting the need for accurate identification and conservation efforts. Mangrove forests provide crucial ecological benefits, making their preservation vital for sustainable regional development. To address these challenges, this study analyzed changes in mangrove vegetation on Tuangku Island, part of the Banyak Islands Marine Natural Park (BIMNP), over a decade (2010–2020). The methodology utilized Landsat imagery and ALOS PALSAR data, which were analyzed through the Google Earth Engine platform. Spectral index combinations, including NDVI, NDMI, MNDWI, and MVI, were analyzed using random forest classification, a tree-based machine learning algorithm. The study\u27s methodology revealed that the total estimated mangrove area was 818.21 hectares in 2010, increased to 939.91 hectares in 2015, and then slightly decreased to 899.96 hectares in 2020. These findings indicate an initial expansion of mangrove vegetation followed by a decline, suggesting fluctuating environmental conditions or human impact over the period studied. The findings highlight the critical need for continuous monitoring and adaptive management practices to support the long-term sustainability of the mangrove ecosystem within the BIMNP. Based on these findings, we recommend implementing targeted conservation measures and further research to understand the underlying causes of the observed changes, thereby supporting the region\u27s sustainable development and ecological health. 
Understanding the Household Waste Management: An Application of the Theory of Planned Behavior
No full textDalam lima belas tahun terakhir, penelitian tentang sampah telah berkembang sangat pesat. Isunya tidak hanya membicarakan entitas sampahnya secara fisik, tetapi juga dikaitkan dengan isu perilaku manusia. Dalam kaitan itu, teori perilaku perencana banyak digunakan untuk menjelaskan fenomena dan gejala perilakunya. Karena itulah riset kami menginvestigasi dan berupaya memahami bagaimana perilaku rumah tangga dalam menangani sampah dengan menggunakan perspektif teori perilaku terencana. Memahami bagaimana perilaku rumah tangga dalam menangani sampah merupakan tahap paling krusial untuk merancang kebijakan efektif yang diperlukan, dan upaya meningkatkan kualitas kebijakan yang telah dibuat sebelumnya. Lokasi riset di Kota Tangerang Selatan, daerah munisipal di Provinsi Banten yang secara spasial berada di pinggiran Kota Jakarta. Data primer kami kumpulkan dengan instrumen kuesioner terstruktur berskala likert. Sampel rumah tangga kami tentukan secara purposive dengan kriteria tertentu seperti usia dan domisili. Teknik analisis menggunakan model persamaan struktural berbasis Smart PLS. Hasil analisis kami berimplikasi pada rancangan kebijakan untuk mendorong masyarakat agar terlibat dalam pengelolaan sampah rumah tangga dengan menyediakan fasilitas pengelolaan sampah spesifik berbasis komunitas.The study of waste research has advanced significantly in over fifteen years, exploring human behavior and the physical aspects of waste. The theory of planned behavior has been extensively utilized to explain the phenomena and symptoms related to behavior related to waste. Consequently, the objective of our study is to apply the theory of planned behavior to enhance our understanding of how households manage waste. This understanding is a critical stage in developing effective strategies and improving the level of quality of existing policy and program intervention. The study is conducted at Tangerang Selatan, a municipality region in Banten Province. Likert scale structured questionnaire instruments are employed for primary data collection, and household samples are chosen based on predetermined characteristics such as domicile and age purposively. A structural equation model based on Smart PLS is employed in the analysis. The results of our study have implications for the development of policies since they encourage the establishment of specialized waste management facilities as well as promote community involvement in residential waste management
Land Cover Change and Carbon Potential in Mangrove Ecosystems at The Social Forestry Area (Study Case: Indramayu Regency, Indonesia)
Full text linkThis study investigates land cover change and carbon potential in mangrove ecosystems within the social forestry area of Indramayu Regency. The research aims to assess land cover changes from 2014 to 2020 and estimate the carbon potential stored in mangrove ecosystems. Field surveys and satellite images analyze land cover change patterns and quantify mangrove carbon storage potential. The research findings reveal that aquaculture land cover dominates the study area (reaching 90%). The study did not find significant changes in land cover within the social forestry area. Only minor changes were noted, with mangroves converting to aquaculture and vice versa. The carbon potential is obtained from biomass calculated based on tree diameter within the research area. According to the calculations, it was found that the three research areas have different potentials due to varying tree diameters and densities. The carbon potential from thepermitted areas of Karya Wana Tiris, Babadan Lestari, and Hijau Mandiri are 24.54 tons, 18.33 tons, and 24.87 tons. The highest carbon potential occurred in 2020 (2,419.69 tons), while the lowest was in 2017 (1,414.06 tons). 
The Addition of Calcium Carbonate (CaCO3) from Anadara granosa and Glycerol on The Quality of Bioplastic
Full text linkBioplastic material is derived from natural materials that microorganisms can break down producing water and carbon dioxide. With the expansion of chitosan, CaCO3 from Anadara granosa and glycerol, the structure of the materials utilized to create bioplastics from custard squander. The technique utilized was a trial, which started with producing chitosan and CaCO3 from Andara granosa. The production of bioplastics was completed with custard squander composites blended in with Anadara granosa with an organization of 80% : 20% with the expansion of CaCO3 and glycerol. The ratio of CaCO3 and glycerol differed into four creation proportions 0.3 g : 10 mL; 0.3 g : 15 mL; 0.4 g : 10mL; 0.4 g : 15 mL. Tensile strength upsides of tests 1 10.98 MPa. The elongation test values are sample 1 23.79%, sample 2 22.00%, sample 3 19.16%, and sample 4 23.80%. In the after effects of biodegradation tests with soil media, the worth is near sample 2 which can be evaluated by 51.5% with an ideal structure of the proportion of CaCO3 and glycerol 0.3 g : 15 mL.Bioplastik adalah plastik yang terbuat dari bahan alam yang mampu terurai oleh mikroorganisme menghasilkan air dan gas karbon dioksida. Komposisi bahan yang digunakan pada pembuatan bioplastik limbah tapioka dengan tambahan kitosan, CaCO3 dari cangkang kerang darah (anadara granosa) dan gliserol. Metode yang digunakan berupa eksperimental yang diawali dengan pembuatan kitosan dan CaCO3 dari cangkang kerang darah (anadara granosa) kemudian dilanjutkan pembuatan bioplastik dilakukan dengan komposit limbah tapioka yang dicampuri kitosan cangkang kerang darah dengan komposisi 80%:20% dengan tambahan CaCO3 dan gliserol divariasikan menjadi empat sampel dengan perbandingan komposisi : I. (0,1 g : 10 mL) ; II ( 0,1 g : 15 mL) ; III( 0,2 g : 10 mL) ; dan IV (0,2 g : 15 mL). Nilai uji tensile strength tertinggi pada pepenelitian ini adalah sampel sampel 3 0,03 MPa. Sedangkan baku mutu nilai uji elongation at break SNI 7188.7:2016 yaitu minimal 5% dan hasil uji yang didapatkan sampel 1 23,78%, sampel 2 18,62%, sampel 3 55,99%, dan sampel 4 38,95%. Pada hasil uji biodegradasi nilai yang mendekati adalah sampel 2 yang mampu tergredasi sebesar 47,8 % dengan komposisi yang optimal perbandingan CaCO3 dan gliserol 0,2 g : 15 mL
Amelioration of Potassium Humate as Ligand Exchanger for Adsorbed P Fractions and their Relationships with Chemical Properties of an Indonesian Andisol
Full text linkAndisols are specifically characterized by a very high P adsorption capacity owing to their acidic reaction and dominance of variable-charged clay minerals. This crop cultivation problem can be overcome by potassium humate amelioration intended to exchange the adsorbed soil P fractions into the more available (labile) forms. This study aims to evaluate the effects of potassium humate application at 0, 20, 40, and 60 kg ha-1 on the dynamics of P fractions and their relationships with the chemical properties of an Indonesian Andisol. Using the Tiessen and Moir procedure, PH2O, PNaHCO3-Pi-Po, PNaOH-Pi-Po, and PHCl fractions were obtained in topsoil (0–30 cm) and subsoil (30–60 cm) samples 16 weeks after the treatment. The organic soil P (PPo) fractions tended to increase and were attributed positively to total P and negatively to base saturation (BS) at the topsoil, whilst the subsoil PPo fractions tended to increase with the decreasing soil BS. At 60 kg ha-1, the potassium humate application effectively decreased PPo and increased PPi fractions in the subsoil. The results also revealed that humic acid component of potassium humate was an effective organic ligand exchanger for the adsorbed PPo fractions that simultaneously altered soil anion-cation equilibrium in the studied Andisol. As an implication, soil P availability was increasing
Indonesian Big Agrarian Data: A Contextual-Based Interpretive Structural Model
Full text linkThe government neglects to pay attention to village development as a result of the inaccurate data collected by numerous entities. Whereas in reality, there are many people who currently hold land tenure that might be used to grow into a community that is sustainable. This study therefore intends to evaluate the Indonesian Big Agrarian Data (IBAD) implementation paradigm based on sustainable villages. The study was carried out in the West Nusa Tenggara village of Senawang in the Orongtelu District of Sumbawa Regency. Six months were spent conducting the research. The information used is a combination of primary data from questionnaire and secondary data from earlier studies or library searches. The ISM analysis approach was employed to develop a sustainable village implementation model. The findings indicate that proper implementation can impact the community, BPN/ATR, and BIG by utilizing licensed surveyors and focusing on policy interpretation from the Coordinating Ministry for the Economy. However, there is no complete data survey and map method, and a data guardian has not been established. Therefore, adjustments are necessary to develop comprehensive village measurement policies and change employee perspectives
Study of heavy metal in sediment of The Klagison River, Sorong City
Full text linkThe Klagison River is one of the rivers located in the North Sorong District to the Sorong Manoi District. The flow of the Klagison River is used by the sand mining industry to dispose of liquid waste products from mining sites. Mining activities are in the middle of the Klagison River so that it can affect the quality of river water and experience a decrease in carrying capacity due to the high level of turbidity in river water caused by sedimentation. The purpose of this research is to provide knowledge about the content of metal elements in sediments by identifying the constituent elements of the Klagison River sediments, Sorong City, West Papua. Determination of the sampling point using the purposive sampling method and the sediment collection tool using the Ekman grab. The method of analyzing the constituent elements of the sediment uses the XRF (X-Ray Fluorescence) method. Based on the research results, there are various types of metal elements contained in the sediments of the Klagison River, namely the elements Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Rb, Sr, Zr and Re where the dominant concentration of metal elements from 5 observation stations is Fe>Si>K>Cl>Al>Ca. At the 5 observation stations, the element Fe>Si>K>Cl>Al>Ca was the highest compared to the other 4 observation stations. This is because station 5 is the mouth of the Klagison River so that it becomes a place for liquid waste deposits to coalesce.The Klagison River in Sorong City is used by the sand mining industry to dispose of liquid waste. Consequently, turbidity and sedimentation occurred. This study aimed to analyze the water quality, heavy metal concentrations in sediments, and the relationship between the two. The sampling points were determined using the purposive sampling method. Data analysis included the pollution load index (PLI), geoaccumulation index (Igeo), and correlation analysis. The TDS value of the Klagison River ranged from 126 to 168 mg/L and turbidity range of 19.98 to 724 NTU. The analysis results pollution load index showed that the sediment with a PLI value of 0.557 was neither polluted nor lightly polluted. Index geoaccumulation showed Cr and Cu values of 100% (Igeo < 0), while Mn and Fe were 80% unpolluted (Igeo < 0) and 20% unpolluted or mildly polluted (0 < Igeo < 2). The concentrations of Cr, Mn, and Fe had a negative correlation with the water quality parameters of TDS and turbidity. The concentration of Cu has a positive correlation with the water quality parameters, TDS, and turbidity