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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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Potensi Karbon Biru Ekosistem Mangrove dan Pengelolaannya untuk Mendorong Mitigasi Perubahan Iklim di Indonesia Rahman, Rahman; Lokollo, Frijona F; Wawo, Mintje; Lewerissa, Yona A; Hulopi, Mahriyana; Ceanturi, Ardan; Handayani, Luluk D; Zuhri, Muhammad Isnan; Effendi, Hefni; Wardiatno, Yusli
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.11447

Abstract

This research aimed to analyze blue carbon potential and mangrove ecosystem management in promoting climate change mitigation in Indonesia. The collected data included mangrove area data obtained through the Indonesian National Ecosystem Monitoring System (SIMONTANA). This research calculated the carbon stock using the global average of mangrove carbon stock. The results showed that the total blue carbon stored in mangrove ecosystems reached 3,267.87 Megaton Carbon (MtC). Papua and Kalimantan regions contributed the most significant potential, with 1,707.22 MtC and 608.17 MtC, respectively. The absorption of carbon dioxide (CO2) reached 11,982.21 MtCO2e. The most significant CO2 gas emissions absorption was observed in the Papua region, amounting to 6,259.80 MtCO2e, followed by Sumatra with 2,118.59 MtCO2e. This high potential value correlated with mangrove ecosystem management policies, such as conservation, restoration, and blue carbon monetization. Mangrove management for climate change mitigation was carried out through national and international cooperation to achieve the 26% to 40% emission reduction target. The existing management model of mangrove ecosystems focused on improving ecological sustainability with less orientation on improving community welfare. Implementing blue carbon monetization at the district level by involving the community as the owners or managers of the mangrove ecosystems is crucial.
Dampak PLTA Poso Energi terhadap Ekosistem Perairan Danau Poso di Sulawesi Tengah Ari Wirachandra; Erny Poedjirahajoe; Ris Hadi Purwanto
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.11467

Abstract

The Poso Energy Hydropower Plant (PLTA) operation and various industrial, agricultural, and domestic waste disposal activities could impact the Lake Poso aquatic ecosystem. However, no documented reports have been detailing the impact of the PLTA. Therefore, this research aimed to analyze the characteristics of the Lake Poso aquatic ecosystem, focusing on physical (TSS, odor, color, turbidity), chemical (pH, DO, BOD, COD, NO3-N, total phosphate), and biological (fecal coliform, plankton diversity) parameters. Water samples were collected at six points in the area before, surrounding, and after the PLTA from July to September 2022. Analyzing the sample data using the analysis of variance (ANOVA) revealed significant differences in physical, chemical, and biological parameters among the six sample points. Additionally, the results showed that the PLTA impacted the characteristics of the Lake Poso aquatic ecosystem, particularly affecting parameters such as TSS, DO, COD, NO3-N, color, and total phosphate. An environmentally sound waste management strategy is urgently needed to support Lake Poso's aquatic ecosystem conservation.
Analisis Fisikokimia, Aktivitas Antioksidan, dan Sensoris dari Ekstrak Daun Sungkai (Peronema canescens Jack.) Devi Silsia; Syafnil; Laili Susanti; Marniza; Tomi Tri Rachmadi
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.11738

Abstract

Sungkai leaves were widely used as an immunomodulatory agent during the COVID-19 pandemic. This research aimed to determine the color, phytochemical characteristics, vitamin C content, polyphenol content, antioxidant activity, and sensory of sungkai leaves extracts from various types of leaves (shoot, young, and old) as well as the condition (fresh and dry). The extraction process included boiling the sample with water at a temperature of 90⁰C for 10 minutes. The parameters observed in this study were color, phytochemicals screening, vitamin C, polyphenols, antioxidant activity, and sensory. The results showed that the extract color was influenced by the types of leaves. These included red-purple for the shot leaves and yellow for young and old leaves. The extract contained flavonoids, tannins, and saponins. The fresh leaves extract produced a higher total vitamin C, polyphenols, and antioxidant activity compared to the dry counterparts. Furthermore, the highest chemical content of sungkai leaves extract was discovered in fresh shoot leaves with total vitamin C, polyphenols, and IC50 values of 172.77 μg/ml, 280.77 μg/ml, and 28.33 μg/ml (strong antioxidant activity), respectively. Sensory characteristics of color, aroma, taste, and overall taste in each extract differed in liking score. Overall, panelists preferred the extract from dried older leaves.
Karakteristik Kayu Cepat Tumbuh Terimpregnasi Monoetilen Glikol dan Nanopartikel SiO 2 terhadap Serangan Jamur Pelapuk Kayu Rahayu, Istie; Saputri, Egydia; Priadi, Trisna; Wahyuningtyas, Irma; Prihatini, Esti; Ismail, Rohmat
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.12288

Abstract

Jabon (Anthocephalus cadamba) and Sengon (Falcataria moluccana) were fast-growing wood species widely planted in the community forest. Both kinds of wood have low durability even though they can potentially be used in the carpentry material industry. Therefore, this research aimed to analyze the vacuum-pressure impregnation effect using monoethylene glycol (C2H6O2) or MEG and silica dioxide (SiO2) nanoparticles on wood resistance to fungal decay. The results showed that impregnation treatment with MEG and SiO2 nanoparticles significantly improved the durability of Jabon and Sengon against fungal attacks. Furthermore, MEGSiO2 with 24-hour polymerization had a better impact on durability compared to both the control and MEGSiO2 with 12-hour polymerization. The 24-hour polymerization using 1% SiO2 nanoparticles resulted in the lowest weight loss for Jabon (5.86% ) and Sengon (5.21%). In addition, the variation of SiO2 nanoparticle concentration did not significantly affect the weight loss and durability of Jabon and Sengon against fungal decay.
The Current Updates of the Progresses and the Challenges of Recognition of Customary Forests in Indonesia Rikardo Simarmata
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.12660

Abstract

Around 30 million Indonesians are forest-dependent, comprising a large portion of customary communities. For generations, customary communities managed forests using customary arrangements as the normative system. However, the state legal framework required the communities to obtain legal recognition to exercise these traditional forest rights. Over the last seven years, the state has formalized hundreds of thousands of hectares of customary forest, which was unprecedented. Some suggested that the number needed to be increased and far less than the potential customary forest areas. Therefore, this research aimed to examine the primary cause and the subsequent impacts on the low number of recognized customary forests. Relevant data were obtained for analysis from documents and direct interviews. The result showed that customary tenure on forest resources coexisted with the state arrangements. The state recognized those customary arrangements through formalization. However, the ideological and political perception and the state's interests regarding customary communities have brought obstacles to that sound policy regarding recognition. This perception and interest further raised three issues regarding the current legal framework and its implementation: complex regulation, delayed processing time, and ambiguous standards.
Perhutanan Sosial di Sumatra Barat: Tinjauan Regulasi dan Implementasinya pada Hutan Nagari Salibutan Nurwansyah; Hariadi Kartodihardjo; Iin Ichwandi
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.13098

Abstract

Social forestry is a program designed to address tenure conflicts, improve community welfare, and enhance environmental quality. Achieving the objectives of social forestry is not only limited to obtaining permits but needs more advanced, concrete, innovative business development that anticipates future challenges and prospects. Therefore, this research aimed to analyze West Sumatra Governor Regulation No. 52/2018 on the Implementation of Social Forestry Facilitation and its practical application in Hutan Nagari Salibutan. Data collection in this research included in-depth interviews and a literature review, while data analysis used descriptive qualitative methods, content analysis, and policy implementation. The results showed that Governor Regulation of West Sumatra No. 52/2018 supported national policy by accelerating social forestry, resolving tenure conflicts, and synchronizing the roles of various stakeholders. This Governor Regulation served as the technical reference in the field, and it comprised facilitation, institutionalization, monitoring and evaluation, and financing. Additionally, the implementation of regulations in Salibutan Nagari Forest correlated with these provisions, as evidenced by the activities carried out by the Forestry Service and the social forestry acceleration working group in collaboration with the Nagari Salibutan forest management institution. The consistency between the regulation's content and field implementation reflected this correlation.
Characterization and Pathogenicity Evaluation of Ceratocystis sp. Isolated from Various Hosts on Acacia crassicarpa Seedlings Lutfiana, Eva; Rahayu, Sri; Hardiyanto, Eko Bhakti; Indrioko, Sapto; Gafur, Abdul
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.v19i1.9940

Abstract

Acacia crassicarpa is widely grown in forest plantations with Acacia mangium and Eucalyptus spp. Ceratocystis sp. is identified as a significant pathogen, causing substantial damage to A. mangium plantations as well as infecting A. crassicarpa, Eucalyptus spp., and several fruit trees such as Lansium spp., which led to yield losses. Research reported that isolates of Ceratocystis derived from various hosts have varying pathogenicity. Therefore, this research aimed to characterize the morphological properties and evaluate pathogenicity levels of eight Ceratocystis isolates (AC1, AC2, AM1, AM2, AM3, AM4, EP1, and LA1) on A. crassicarpa seedlings. The investigation occurred in the shade house and at the Faculty of Forestry UGM, Forest Health and Protection Laboratory in Yogyakarta. Four-month-old A. crassicarpa seedlings were artificially inoculated with Ceratocystis isolates from A. mangium, A. crassicarpa, Eucalyptus spp., and Lansium spp. hosts. The experiment employed a completely randomized design with four replicates. The results showed that characteristics of the isolates varied, but the differences in perithecium size were statistically insignificant. EP1 had a lighter color (greyish olive) than the other isolates. It was the most virulent and had a high potential for use in screening the resistance of A. crassicarpa clones against Ceratocystis sp. in the future.
Problem Identification and Conflict Resolution Strategies for Industrial Forest Plantation Licensing in Sekadau Forest Management Unit Hardiansyah, Gusti; Mardin Rachmad, Harul; Rifanjani, Slamet; Fitriani, Afni
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.v19i1.12221

Abstract

This research aimed to map tenure conflicts within the Industrial Forest Plantation (HTI) in the Sekadau Forest Management Unit (KPH) and to thoroughly analyze effective strategies for addressing these conflicts. The study employed Rapid Land-Tenure Assessment (RaTA)and Dispute Style Analysis (AGATA) utilizing the Thomas-Kilmann Instrument. The results revealed three distinct disputing styles: Agitation (Karang Betung-Kenyabur, Teluk Kebau-Merabu Jaya), Compromise (Tembesuk-PTWSP), and Collaboration (Nanga Engkulun-PTWSP). Based on these findings, the research recommends tailored strategies for conflict resolution. Neutral mediation strategies are suggested to reduce tensions in agitation-style disputes, while facilitation strategies can help achieve mutually beneficial solutions in compromise-style cases. Trust-building initiatives are advised to enhance collaboration in resolution efforts. Additionally, this research emphasizes the integration of corporate social responsibility (CSR) programs, including forestry partnerships, agroforestry initiatives, non-timber forest product development, and livestock assistance, to provide interim economic benefits. These approaches combine positive law, customary law, and multi-stake holder engagement to effectively resolve conflicts while advancing community welfare and promoting sustainable development.
Diversity of Order Lepidoptera at Different Levels of Canopy Covers Around Panten Camping Ground, Mount Ciremai National Park Fariha, Ria Raudhatul; Ramadhania, Laila; Fahmawati, Putri Dewi; Supriyadi, Supriyadi; Nufus, Malihatun
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.v19i1.16212

Abstract

Mount National Ciremai Park has abundant biodiversity, including the insect order Lepidoptera. Therefore, this research aimed to determine the diversity of order Lepidoptera based on different levels of canopy cover around Panten Camping Ground, Mount Ciremai National Park. This research used an exploration survey using a 100 m transect line and three observation transect lines with different levels of canopy cover. Based on the result of observation, 225 individual Lepidoptera were identified from 26 species and 8 families. The diversity of Lepidoptera showed that 4, 5, and 7 families were at the open, moderate, and closed canopy covers, respectively. Open canopy areas had the most significant number of species, namely 18. In addition, the most commonly found species was Bradina diagonalis, with 82 individuals. The diversity index value (H') of the order Lepidoptera around Panten Camping Ground was recorded at 1.62, 2.14, and 2.08 in open, medium, and closed canopy areas, respectively. The diversity index results showed that the levels of canopy cover did not affect insect diversity, while temperature, humidity, plant species, and springs had a significant influence.
Determination of Harvesting Cycle of Gliricidia sepium for Bioenergy Using Growth Model Diono, Dimas Wahyu; Rusolono, Teddy; Bahruni, Bahruni
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.v19i1.16243

Abstract

The emission of CO2 is increasing due to the high population and standard of living, particularly from the energy sector. Renewable energy from forest resources, such as fuelwood, can contribute to these emissions' reduction. Therefore, this research aimed to generate a growth model to determine the harvesting cycle of Gliricidia sepium as a source of raw material for bioenergy. The model generation employed regression technique and used stand inventory data. The growth model for Gliricidia sepium was Y = 157.46e (-3.342/A), where age (A) was the independent variable. The optimum harvest occurred at 4 years with a biomass production potential of 68.28 tons/ha. This research provided valuable information for decision-making in managing the industrial forest plantation of Gliricidia sepium for bioenergy.

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