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Ni Putu Diana Mahayani
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INDONESIA
Jurnal Ilmu Kehutanan
Published by Universitas Gadjah Mada
ISSN : 01264451     EISSN : 24773751     DOI : https://doi.org/10.22146
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmu Kehutanan is a biannual open access journal by the Faculty of Forestry, Universitas Gadjah Mada, Indonesia, that publishes peer-reviewed scientific articles focusing on aspects of forest management, silviculture, forest conservation, and forest technology, both basic and applied. The Journal intended as a medium for communicating and motivating research activities through scientific papers, including research papers, short communications, and reviews written in English. In considering suitability for publication, the Journal refers international editorial conventions and conducts a double-blind peer-review selection process.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 104 Documents
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Contested Policy of “Forest Areas with Special Management”: A Case Study of the Permit Holder in Kediri Regency, East Java Yuana, Listia Hesti; Afiff, Suraya Abdulwahab
Jurnal Ilmu Kehutanan Vol 19 No 1 (2025): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i1.16387

Abstract

The Government of Indonesia introduced a Special Management Forest Areas policy to facilitate changes in forest governance in Java, particularly over approximately 1.1 million hectares of forestland that were previously under Perhutani's management. Therefore, this research aimed to examine the practical benefit of the policies for communities critically. The designation of forest communities as key stakeholders paradoxically risked further marginalization. This research applied a patchwork ethnography approach and relied on participant observation and in-depth interviews. Although Perhutani no longer held official authority, various strategies were implemented at site levels to maintain access to forest resources. During the transition period, forest communities struggled due to a lack of clear assistance. As a new actor, the Forestry Service Branch (CDK) could not provide intensive assistance because the communities had not yet undergone the transformation required to obtain legal recognition under the latest policies. The results showed that good intentions in policies to support marginalized communities were insufficient. For the purpose of justice, a strong commitment at the grassroots level was needed through intensive assistance to ensure that policies were not merely rhetorical but truly provided tangible benefits.
Forestry Spatial Planning Policy Direction: Concerning the Long-Term National Development Plan 2025-2045 Margono, Belinda Arunarwati; Purwanto, Judin; Nugroho, Sigit; Widiyatno, Widiyatno
Jurnal Ilmu Kehutanan Vol 19 No 1 (2025): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i1.18426

Abstract

The role of forests is related to the challenges of balancing food, water, and energy, which are likely to increase significantly in the near future. A science-based conception is needed to support the correct application of forest adequacy in terms of forestland and forest cover over a watershed or island to address these challenges and to strengthen the role of forests in performing economic, social, and ecological functions, mainly in the context of water, food, and energy security. However, the minimum extent of forest over land is still debatable. The determination of what is named forest adequacy, in terms of both forestland (kawasan hutan) and forest cover (penutupan hutan), needs to consider roles of biogeophysical factors, environmental carrying capacity, watershed characteristics, along with flora and fauna diversity. Spatial planning plays a crucial role in implementing the concept of determining the forest's adequacy based on spatial considerations to support the Forestry Spatial Planning Policy in the 2025-2045 National Development Plan to ensure the future security of water, food, and energy supply.
Retracted: Chemical Compound Analysis of Syzygium myrtifolium Essential Oil and Molecular Docking Analysis on Phenylalanine Hydroxylase Enzyme Hamidi, Zikri
Jurnal Ilmu Kehutanan Vol 19 No 1 (2025): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i1.19038

Abstract

Essential oil from the red shoot plant (Syzygium myrtifolium) had high potential as a non-timber forest product. Therefore, this research aimed to evaluate the effect of leaves storage duration on oil yield, essential oil quality, and compliance with the Indonesian National Standard (SNI) 06-237-2006 for clove leaf oil. This research performed steam distillation to produce essential oil from fresh leaves, leaves stored for 24 hours, and leaves stored for 48 hours. The results showed that the highest essential oil yield was obtained from the 24-hour stored leaves at 0.204%, in line with the SNI 06-237-2006. The Gas Chromatography-Mass Spectrometry (GC-MS) analysis showed that the main compounds in the product were beta-pinene (39.09%) and caryophyllene (23.74%). Based on the in silico results from molecular docking, there was a strong interaction between the essential oil compounds and the enzyme phenylalanine hydroxylase. In addition, humulene, ledene, and caryophyllene exhibited the highest binding affinities due to the molecular stability of the enzyme at residues Phe A:254 and Tyr A:325. The current research opened opportunities for developing essential oil-based products for health applications.
Retraction of Published Article Due to the Author’s Proposal UGM, Jurnal Ilmu Kehutanan
Jurnal Ilmu Kehutanan Vol 19 No 1 (2025): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i1.22601

Abstract

Article: Jurnal Ilmu Kehutanan, 19(1) 2025, pp. 92-101 (10.22146/jik.v19i1.19038)Title: Chemical compound Analysis of Syzygium myrtifolium Essential Oil and Molecular Docking Analysis on Phenylalanine Hydroxylase EnzymeAuthor: Zikri HamidiAccording to the author’s proposal, the editorial of the Jurnal Ilmu Kehutanan withdraws the paper. 26 June 2025
Comparison of Microclimate Condition and Thermal Comfort Levels between Public and Private Green Open Space: A Case Study of Denggung Park and Gadjah Mada University Wisdom Park Ghaniyy, Abi Abdillah Niko; Ningrum, Diah Fitri Astuti
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.16746

Abstract

Rapid urban population growth has driven extensive economic, residential, educational, and cultural development, leading to the conversion of green spaces into built-up areas. This conversion interferes with the regulations of air temperature and Thermal Humidity Index (THI). This research investigated the characteristics of green open spaces at Denggung Park and Gadjah Mada University Wisdom Park, examining their effects on microclimate conditions and the relationship between green space conditions and THI levels. The methods included a literature review, field measurements of vegetation and microclimate variables, tree crown profile analysis using Sexl-FS, and Spearman Rank Correlation. Results showed that tree density has a direct relationship with THI. The private green space (Wisdom Park), with 126.33 trees/ha, achieved superior THI compared to the public space (Denggung Park), with 49.01 trees/ha. The Gadjah Mada University Wisdom Park's more complex canopy structure and optimal canopy connectivity significantly enhanced THI. Spearman Rank Correlation analysis revealed strong relationships between the tree density and thermal comfort level for Denggung Park (-0.52) and for Gadjah Mada University Wisdom Park (-0.69), with a p-value < 0.05. These findings confirm the critical importance of optimizing vegetation structure and density to support thermally comfortable urban environments.
Pelestarian Hutan dalam Budaya Pertanian Nugal oleh Masyarakat Adat Dayak Kuhin di Desa Sapundu Hantu, Kabupaten Seruyan, Kalimantan Tengah Mirza, M Yusril
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.20618

Abstract

The Dayak Kuhin community, native to Central Kalimantan Province, had a traditional agricultural culture called nugal, which was carried out once a year. Nugal was considered an agricultural culture that involved opening fields in the forest, but it was often associated with causing forest fires. To clarify the realities of the practice, this research aimed to explore the nugal process and associated forest conservation efforts by taking a case study of the Sapundu Hantu Village, Seruyan Hulu District, Seruyan Regency, Central Kalimantan Province. This research employed an ethnographic method and a thick description approach, utilizing qualitative data collected through participatory observation, in-depth interviews, archival records, and literature reviews. The results revealed that the nugal agriculture embodied rich local knowledge about forest conservation efforts reflected in each process. The community practiced the nugal agriculture carefully with adherence to customary norms that regulated forest management. The findings of this study address the prevailing negative stigma associated with the nugal culture as practiced by the Dayak Kuhin community.
Habitat Potensial Gajah Sumatra (Elephas maximus sumatranus) di Resort Rawa Bunder, Seksi III Kuala Penet, Taman Nasional Way Kambas, Lampung Subeno, Subeno; Hariyanto, Awang; Satria, Ryan Adi
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.7724

Abstract

Way Kambas National Park (WKNP) in Lampung serves as a critical habitat for the endangered Sumatran elephant (Elephas maximus sumatranus). However, the area has increasingly experienced human-elephant conflicts, particularly at the Rawa Bunder Resort. This research aimed to assess the biophysical characteristics and map the distribution of potential elephant habitats within the resort area. Field data were collected using 70 nested plots distributed along established transects and analyzed through a modified sampling protocol. An Agglomerative Hierarchical Cluster (AHC) analysis was employed to classify the habitats into suitable, moderately suitable, and less suitable categories. The georeferenced plot data were processed using ArcGIS 9.3 to create a habitat suitability map. The findings indicated that 24% of the plots were classified as suitable, 33% as moderately suitable, and 43% as less suitable. The suitable habitats were predominantly located in lowland forest areas, which represent a relatively small proportion of the total area. To expand suitable habitats and mitigate human-elephant conflicts, strategic habitat management measures, such as forest restoration and targeted enrichment, are essential. These results provide a spatial framework for conservation planning for elephant habitats in Way Kambas and other fragmented landscapes.
Pengaruh Penyimpanan Jangka Panjang Berbasis Zeolit terhadap Kepadatan Spora dan Potensi Propagul Mikoriza pada Tanaman Sorgum Istiqomah, Fatimah Nur; Novanto, Praditya Rizqi; Janati, Rahayu Ning
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.10085

Abstract

The research aimed to investigate the impact of storage duration (20 years versus less than one year) on the quantity of mycorrhizal spores and propagules within zeolite carrier media, using sorghum as the host plant. Spores were quantified through a sieving method and subsequent microscopic observation, while the numbers of propagules were determined through serial dilution down to 10-7. Following this, sorghum was cultivated, and root infection was evaluated. The findings indicated that mycorrhizae stored for less than one year yielded 416 spores/10 g and 620,000 propagules/g, compared to 259 spores/10 g and 170,000 propagules/g for those stored for twenty years. The identified spore types in both age groups included Acaulospora spp. 1, Acaulospora spp. 2, Glomus grape, and Glomus manihotis. This result suggested that the storage of mycorrhizae should be limited to less than one year to preserve a high number of spores and propagules.
Pemodelan Kesesuaian Habitat Mandar Gendang (Habroptila wallacii) di Pulau Halmahera, Indonesia Aldiansyah, Septianto; Madani, Ilyas; Risna, Risna; Saputra, Randi Adrian
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.18437

Abstract

Drummer Rail (Habroptila wallacii) is a bird species of the Rallidae family with limited ecology and behavior information. The information on the distribution of H. wallacii in Halmahera Island is crucial as it is classified as a vulnerable species. Therefore, this research aims to predict the potential distribution of H. wallacii on Halmahera Island using the Maximum Entropy (MaxEnt) modeling method, which projects species distributions based on presence data and environmental variables. A total of 47 data points on H. wallacii encounters were obtained from open-access data sources and field observation. The variables used were land use land cover (LULC), normalized difference vegetation index (NDVI), elevation, slope, and proximity data (river). The results showed that 33.52% of the area was very suitable for H. wallacii habitat, 32.97% was suitable, and 33.50% was unsuitable. Approximately 29.39% of the suitable habitat was located in limited-production forest areas, while conservation areas covered only 5.19%. These results suggested the need to review spatial planning policies to increase protection of the natural habitat of the species. The results could serve as considerations and recommendations for the Ministry of Environment and Forestry regarding the future management of forest areas for these species.
Perencanaan Edu-Ekowisata Berbasis Atraksi Wisata di Kebun Percobaan dan Penelitian Jonggol, Institut Pertanian Bogor (IPB) University Hikmah, Ziyadatul; Muntasib, E.K.S. Harini; Kosmaryandi, Nandi
Jurnal Ilmu Kehutanan Vol 19 No 2 (2025): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i2.18797

Abstract

The Jonggol Teaching and Research Farm serves as a field laboratory for Institut Pertanian Bogor (IPB) University, featuring a diverse array of agricultural and livestock systems, including plantations of oil palm, cassava, sorghum, and indigofera, as well as sheep and cattle farming, alongside agricultural and livestock processing industries. The research aimed to develop an edu-ecotourism plan that leverages existing tourist attractions. The planning process involved preparation, data collection through field surveys, resource inventory, and interviews with managers. Employing both descriptive and spatial analyses, the research synthesized concepts and site planning. The data analysis encompassed physical, biophysical, tourism, and management aspects. Findings revealed that edu-ecotourism plays a vital role in tourism planning, functioning as an educational resource for environmental character development and a means to showcase agricultural innovations. The research identified ten tourist attractions at the Jonggol Teaching and Research Farm, which include the Sorinfer factory, various plantations, field laboratories, guest houses, and natural resources (31 flora, 2 cultivated animals, and 20 wildlife species), as well as notable topographical, geological, and soil variations, complemented by visual beauty. The resulting edu-ecotourism plan encompassed designated tourist spaces, circulation plans, green planning zones, and activity plans that incorporate interpretation services, such as attraction maps.

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