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INDONESIA
Jurnal Sylva Lestari
Published by Universitas Lampung
ISSN : 23390913     EISSN : 25495747     DOI : https://doi.org/10.23960
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology
Jurnal Sylva Lestari (JSL) [P-ISSN 2339-0913 | E-ISSN 2549-5747] publishes original research articles related to all aspects of forestry and environmental sciences which includes, but not limited to the following topics: forest and natural resources management, biodiversity conservation and management, wood science and timber technology, agroforestry and social forestry, forest products and services, and socio-economics of natural resources. It is primarily a medium for disseminating original theoretical and experimental researches, as well as technical reviews. This journal issues one volume annually consist of three issues that delivered every January, May, and September.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 315 Documents
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Productivity of Cajuput Stands at Various Age Levels in Telawa Forest Management Unit, Central Java, Indonesia Alvien Gusti Prasditio; Agustina, Ana; Rahmadwiati, Rissa; Pertiwi, Yus Andhini Bhekti; Wicaksono, Rezky Lasekti; Supriyadi
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1015

Abstract

Cajuput (Melaleuca cajuputi Powell) plants are essential oil-producing plants that have ecological and economic benefits. The ideal pruning life is one way to optimize the productivity of cajuput stands. This study aims to analyze the productivity of cajuput stands at various age levels in Telawa Forest Management Unit by considering shoots, stem diameter, shoot diameter, biomass, and land suitability analysis. Data was collected by making three temporary survey plots by simple random sampling at 5, 9, 13, 17, and 21-year-old stands. The results showed that cajuput stands experienced increased productivity, as seen in stem diameter, shoot diameter, and biomass. In addition, the higher the stand density, light intensity, and humidity positively affect the total biomass, with an increase in the life of the stand. Based on the study’s results, the best cajuput productivity occurred at 17-year-old stands, with an average biomass of 1,031.43 kg/ha and an allometric equation of 18.40 kg. The decrease in cajuput productivity occurred at 21-year-old stands, 40% compared to the 17-year-old stands, and the 21-year-old stands have the lowest land index value. Despite the decline in productivity, the main effects still need to be studied over a more extended period. Keywords: biomass, cajuput, optimal lifespan, productivity
Antitermite Activity of Eucalyptus pellita Bark Extract Andika, Riki; Arinana, Arinana; Sari, Rita Kartika; Rahmawati, Anindya Intan; Himmi, Setiawan Khoirul
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1023

Abstract

The study uncovers the promising anti-termite properties of Eucalyptus pellita bark extract, a resource often discarded as industrial waste in the pulp and paper manufacturing industry. It investigates the anti-termite efficacy of various extracts from E. pellita bark and identifies the extract with the highest activity, followed by a comprehensive phytochemical analysis. Samples of E. pellita inner bark, outer bark, and mixed bark were ground into 40–60 mesh powder and subjected to extraction using soxhletation techniques with successive extraction in increasingly polar solvents (n-hexane, ethyl acetate, and methanol solvents). The anti-termite activity of these extracts was evaluated using no-choice bioassays to determine the termite antifeedant activity through the weight loss percentage of test samples and the mortality rate of Coptotermes sp. Furthermore, Py-GCMS analysis was conducted on extracts exhibiting the highest anti-termite activity to elucidate their chemical composition. The findings revealed that methanol extracts from all three parts of E. pellita bark exhibited the most potent anti-termite activity against Coptotermes sp., as evidenced by the highest mortality rate (100%) and cellulose paper weight loss of 9.57 ± 6.66 mg. These methanol extracts were predominantly composed of phenolic compounds, particularly condensed tannins, suggesting a potential breakthrough in termite control. The findings indicate that E. pellita bark may be a sustainable and eco-friendly alternative to chemical pesticides for termite control. Furthermore, its utilization may facilitate waste valorization in the pulp and paper industry, thereby supporting environmental sustainability and economic efficiency. Keywords: coptotermes, decay properties, inner bark, outer bark, resistance properties
Effects of Storage-Induced Moisture Loss on Germination Performance and Oil Yield of Pongamia pinnata Cahyono, Deddy Dwi Nur; Aminah, Aam; Putri, Atfi Indriany; Syamsuwida, Dida; Danu; Djam'an, Dharmawati; Suita, Eliya; Siregar, Nurma Wati; Nuroniah, Hani Sitti; Lukman, Abdul Haki; Bahanan, Fauzi; Utami, Eka Rachmi Budi
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1026

Abstract

Pongamia (Pongamia pinnata) is a non-food plant that has the potential to be developed as a biofuel because its seeds’ oil content is up to 40%. Therefore, it is necessary to study the characteristics of seeds for germination in relation to mass cultivation and information on oil content as a production consideration. This paper aimed to describe the sensitivity of pongamia seed moisture content to germination and its oil content and also to understand the seed category. Variations in moisture content were obtained from storing seeds at ambient temperature for up to 5 months. Moisture content, morphological characters, oil content, and germination rate were examined for each storage period. Data were analyzed using analysis of variance to determine the treatment effect. The results showed that storing seeds at ambient temperature caused a decrease in moisture content. A decrease in moisture content of 29.36% in the first month’s storage significantly affected the reduction of morphological characters and seed weight. Meanwhile, during the 2–5 months storage period, the decrease in moisture content was only 2–5% and did not affect seed length. Reducing moisture content (MC) increased oil recovery but was not statistically significant. The best germination rate was 84.67%, obtained from fresh seeds (MC of 46.64%); the germination rate decreased as the moisture content decreased during storage. Pongamia should be categorized as an intermediate seed based on the seed moisture content characteristics and germination test results. Keywords: germination, moisture content, oil content, Pongamia pinnata, storage
Disease Spectral Identification and Analysis on the Bark of Gmelina (Gmelina arborea Roxb) Ayag, Annie Onez; Padonat, Kyra Luminarias; Minguita, Kizza Eyn Sulima; Vergara, Joey Arles Ongue; Jusoy, Jade Capinpuyan; Casilac Jr, Cornelio Sacquiap
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1033

Abstract

Gmelina arborea is among the fast-growing Industrial tree plantation species currently being used as an alternative source of the decreasing supply of commercial timber from natural-growth forests. This study focuses on disease spectral identification and analysis of G. arborea bark using UV-Vis Spectrophotometry. Bark samples from both healthy and unhealthy bark with canker and death diseases were collected inside Caraga State University’s Main Campus. The methodology involved preparing bark extracts and measuring their absorbance over a wavelength range of 350 nm to 800 nm. The findings revealed distinct spectral signatures of healthy and unhealthy cankers, particularly with death disease, which exhibits a greater alteration in its spectral trend. The spectral trend of death-disease shows a drastic decrease in its absorption and the presence of troughs and peaks. On the other hand, the canker shows a decrease in its absorption. The severity of disease in the bark may potentially affect the behavior of the spectral trend; this is proven in the spectral trend of death-disease. The absorbance decreased, causing troughs at specific wavelengths as the presence of those diseases and their severity progressed. These findings show that spectral information from healthy and unhealthy bark can be used as an early detection method for tree diseases or stresses, thereby contributing to the conservation and sustainable use of G. arborea. Keywords: disease identification, healthy bark, Gmelina arborea, unhealthy bark, UV-Vis spectrometry
Institutional Analysis of Sustainable Management of the Sekampung Watershed, Lampung Province, Indonesia Edison; Banuwa, Irwan Sukri; Yuwono, Slamet Budi; Damai, Abdullah Aman; Hidayat, Kuswanta Futas; Suroso, Erdi; Hasani, Qadar
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1041

Abstract

The Sekampung Watershed is one of the 108 critical national watersheds designated by the government as requiring restoration of its carrying capacity. In addition to restoration challenges, a lack of coordination among various institutions has led to fragmented and uncoordinated efforts in watershed conservation. Addressing these, researching the institutional aspects of sustainable management by synergistic governance across sectors in the Sekampung watershed is crucial. This study aimed to determine the key institutions directly involved in the sustainable management of the Sekampung Watershed in Lampung Province, along with their coordination mechanisms and interrelationships. This study also aimed to identify constraints in the sustainable management implementation of the Sekampung watershed. The study employed the Interpretative Structural Modelling (ISM) method using questionnaires and expert discussions. The results show that the key institutions in the integrated management of the watershed to ensure the Sekampung Watershed’s functions are preserved and sustainably utilized were the provincial government institutions, governor, regent, mayor, together with the Provincial and Regency or City Regional House of Representatives (DPRD), the Bukit Barisan Selatan National Park Authority (BBTNBBS), and the Way Seputih Way Sekampung Watershed and Forest Management Agency (BPDAS HL WSS). The low awareness care of the community towards watershed management was identified as a critical constraint that must be addressed for the successful sustainable management of the Way Sekampung Watershed. Keywords: institutional analysis, interpretative structural modelling, protected forest, Sekampung Watershed, stakeholder
Dimensional Stability and Wettability of Modified Samama (Anthocephallus macrophyllus) Wood with Boron, Citric Acid, and Heat Treatment Priadi, Trisna; Wardhani, Miranti Kusuma; Putra, Guruh Sukarno; Cahyono, Tekat Dwi
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1056

Abstract

This research aimed to address the leaching phenomenon of boron preservatives in wood. The subsequent investigation focuses on wood's dimensional stabilization and wettability after a two-stage impregnation process. Samama (Anthocephallus macrophyllus) wood was impregnated with boron (boric acid, borax, and a combination of both) at a pressure of 7 atm for 4 hours, with each preservative’s concentration set at 5%. After oven drying at 60°C until achieving a 15% moisture content, the next step involves a second-stage impregnation with citric acid (at a 5% concentration) under the same pressure and duration. The final step included heat treatment at 80°C and 160°C for 4 hours. The research results indicate that boron and citric acid enhance the dimensional stabilization of samama wood. The best dimensional stabilization treatment combines boric acid, borax, citric acid, and heat treatment at 160°C. This study confirms that citric acid improves the dimensional stabilization of samama wood, whether used with boron or not. Compared to treatments without citric acid and heating, the two-stage impregnation reduces boron leaching by up to 30%. The research also recommends that all treatments exhibit good finishing properties. Keywords: Anthocephallus macrophyllus, boron, dimension stabilization, impregnation, wettability
Carbon Storage Potential and Economic Valuation in the Arboretum of Forest Area with Special Purpose (KHDTK) Aek Nauli, Indonesia Ramadhani, Nur; Wicaksono, Rezky Lasekti; Rahmadwiati, Rissa
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1057

Abstract

Sustainable forest management is expected to significantly contribute to preventing climate change and supporting the achievement of the Forestry and Other Land Use (FOLU) Net Sink 2030. This study aims to determine the potential for biomass storage and carbon and economic valuation in the Arboretum of Forest Area with Special Purpose (KHDTK) Aek Nauli, North Sumatra, Indonesia. This study used systematic sampling with random start as an inventory method. The estimation of above-ground carbon uptake used general allometric equations and benefit transfer methods for the economic value of carbon. This study found 62 species of woody plants with 5 species classified as endangered according to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, namely Agathis dammara, Dryobalanops aromatica, Tectona grandis, Pinus merkusii and Saurauia bracteosa. There are 734 individuals of woody plants, including 84% in the tree phase and 16% in the pole phase, with dominant species in both phases, namely Pinus merkusii and Schima wallichii. Potential biomass and carbon stocks in the pole phase were 4.76 tons/ha and 2.24 tons/ha, respectively, while in the tree phase were 338.69 tons/ha and 159.19 tons/ha. The total estimated carbon sequestration reached 592.42 tons.CO2e/ha. Carbon stocks’ total potential economic value is IDR 2,578,832,243 (USD 164,100). Therefore, the Arboretum of KHDTK Aek Nauli is considered to have the potential to support the achievement of the FOLU Net Sink 2030 target. It is expected that the potential economic value of carbon can be converted into real value and optimized through a carbon trading scheme to offset greenhouse gas emissions and support the sustainable management of KHDTK Aek Nauli. Keywords: benefit transfer, biomass, carbon trade, climate change mitigation, economic potential
Feeding Preferences of Subterranean Termite Schedorhinotermes javanicus on Tusam (Pinus merkusii) Wood Kutana, Agung Nugrawan; Nandika, Dodi; Arinana, Arinana
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1063

Abstract

Wood-destroying termites are quite influential in Indonesia, and the subterranean termite Schedorhinotermes javanicus is one of them. This study was conducted to determine the feeding preferences of subterranean termites S. javanicus on tusam (Pinus merkusii) wood and the influence of their environment. The bait woods made of tusam boards were installed at the experimental site. The weight loss and consumption of bait woods were studied with three test times (one, two, three) months of burial. The subterranean termite specimens attacking the bait woods, soil characteristics, and weather at the experimental field were also identified. The results demonstrated that the average air temperature at the experimental site was 25.4 ± 0.4°C, the average air humidity reached 88.8 ± 2.4%, and the light intensity at the experimental site ranged from 175.67 lux to 3889.7 lux. The results showed that S. javanicus quite actively attacked the bait wood. This can be seen from the high weight loss (35.03%) and the wood consumption (38.78 g). The weight loss after three exposure times in the experimental field was up to 13.54%, 16.38%, and 35.03%, respectively. The wood consumption during the same experimental period reached 14.9 g, 18.25 g, and 38.78 g, sequentially. The high weight loss and the consumption of bait wood indicate the high feeding preference of the subterranean termites S. javanicus on tusam wood. Keywords: field test, Pinus merkusii, Schedorhinotermes javanicus, weight loss, wood consumption
Spatial Model of Carbon Stocks in Special Purpose Forest Area (KHDTK) Mungku Baru, Central Kalimantan Province, Indonesia Hanafi, Nanang; Jauhari, Ahmad; Hatta, Gusti Muhammad; Hafizianor
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1066

Abstract

This study aims to estimate vegetation biomass and spatial distribution of carbon stocks in Special Purpose Forest Area (KHDTK) Mungku Baru, Palangka Raya City, Central Kalimantan Province, Indonesia. KHDTK Mungku Baru is a former logging area from the 1970s, which has undergone secondary succession and is dominated by pole and sapling levels. The approach used in this study involves remote sensing technology and field inventory data, which allows carbon stock calculations to be carried out quickly and accurately over a very large area. A linear regression algorithm was used to obtain a spatial model of carbon stocks using NDVI obtained from Landsat as a predictor. The developed model shows positive correlation results with an R2 value of 0.70; an Adjusted R2 value of 0.69 with a p-level < 0.05, and RMSE of 42 tons/ha. This carbon stock mapping results serve as a basis for formulating various management plans for KHDTK Mungku Baru regarding ecological, social, and economic aspects. Keywords: carbon stocks, normalized difference vegetation index, spatial model, special purpose forest area, vegetation biomass
Bending Strengths of Large-leaf Mahogany (Swietenia macrophylla King) and Mangium (Acacia mangium Willd) Commercial Lumbers in Northeastern Mindanao, Philippines Cossid, Rey Naldoza; Torralba, Jan Michael Ampong; Clemente, John Harold Merantes; Villaflor, Chary Joyce Gabriel; Jandug, Catherine Mhae Buctuan; Casilac Jr, Cornelio Sacquiap
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1072

Abstract

Large-leaf mahogany (Swietenia macrophylla King) and mangium (Acacia mangium Willd) have been the preferred wood for furniture and cabinets for ages. S. macrophylla is famous around the world for the wood it provides. This study investigated the bending strength (modulus of rupture (MOR) and modulus of elasticity (MOE)) of S. macrophylla and A. mangium commercially available lumbers sold at roadside lumber dealers in northeastern Mindanao (Provinces of Agusan del Norte, Agusan del Sur and Misamis Oriental), Philippines. Four lumbers were acquired for each species in every province. A total of 12 lumbers per species were collected from the three provinces, or 24 sampled lumbers. These lumbers were further processed into a nominal dimension of 1.5 cm × 1.5 cm × 27.6 cm. All samples were oven-dried at 105 ± 3°C for 24 hours inside a laboratory oven until no more moisture could be removed. The 3-point test jig was fabricated and adapted to a kidizen science-free design but modified for this study. The results show no significant differences in bending strength at a 0.01 significance level among the three provinces and between species. Overall, bending strength is comparable across provinces and species. For S. macrophylla and A. mangium, Agusan del Norte obtained the highest MOR and MOE (54.707 MPa, 63.002 MPa). The MOE of S. macrophylla in Agusan del Norte was also high (6,825 MPa), but for A. mangium, Misamis Oriental province was the highest. Keywords: 3-point test jig, load deflection, mahogany, modulus of elasticity, modulus of rupture

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