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Journal of Sylva Indonesiana

Jsi
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Published by Universitas Sumatera Utara

ISSN : 26225093 EISSN : 26225158 DOI : 10.32734

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

Journal of Sylva Indonesiana (JSI) is an international peer-reviewed biannual journal (February and August) published by TALENTA Publisher, Universitas Sumatera Utara and managed by Faculty of Forestry, Universitas Sumatera Utara. It is dedicated to interchange for the articles of high-quality research in the field of forestry and natural resources including Forest Management, Social And Economic of Forestry, Forestry Policy, Sylviculture, Forest Ecology, Plantation Forestry, Biotechnology, Forest Conservation, Biodiversity And Natural Resources, Wood Sciences And Technology, Biocomposite, and Non Timber Forest Product. The journal publishes state-of-art scientific articles in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the Journal of Sylva Indonesiana (JSI) follows the open access policy that allows the published articles freely available online without any subscription.

Arjuna Subject : -

Articles 119 Documents

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Utilization of Unmanned Aerial Vehicle (UAV) Technology for Mapping Mangrove Ecosystem Ayub, Ayub Sugara; Feri Nugroho; An Nisa Nurul Suci; Ari Anggoro
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Technological developments, especially in remote sensing in mangrove mapping are growing. One of them is the use of Unmanned Aerial Vehicle (UAV) as a vehicle for capturing aerial photo data. This study aims to map the mangrove ecosystem in order to find out spatial information with UAV technology and to identify mangrove species, distribution, and associations. The ground survey was conducted on 02 until 04 May 2019 in North of Lancang Island, Seribu Islands, DKI Jakarta Province. The mangrove data collection was carried out in four stations with marking, tracking the mangrove area and drone flights for taking aerial photo data. Based on the research, it was found that the mangroves were in good condition with an area of around 4 hectares, consisting of Rhizophora mucronata. However, there is a lot of waste around the mangrove ecosystem, especially inorganic waste in the form of plastic. Where the presence of garbage can cover the roots of the mangrove so that it can affect respiration and cause death in mangroves. The application of UAV technology that is integrated with GIS in mangrove ecosystem mapping is expected to be an alternative in extracting mangrove databases for future coastal ecosystem management.

Suitability of Teak Log Quality from Gunung Kidul and Bantul Yogyakarta Community Forest for Export Meubel Purpose Mastap, sushardi; Prayitno, Tibertius Agus; Suranto, Yustinus; Lukmandaru, Ganis
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Natural defect or poor log quality are common in community teak forests. Furniture manufacturers typically use these log types for export purposes. The aim of this study is to determine the effect of community teak forest location and teak stand age affect on teak wood quality. Three teak forest locations were Bantul and two locations in Gunung Kidul. The teak stand age class namely 6, 8, and 10 years old. The data was analyzed using SPSS 20.0 with Tukey test. The result showed that brittleness defect, sapwood defect, and different wooden knot defects were significant in all locations, while log straightness defect was found only in Dlingo. Similarly, all teak stand age (6, 8, and 10 years old) also produced the same defects such as brittleness defect, sapwood defect, and wood knot defect, while the straightness defect at the age of 10 years old was different from to other two teak stand age (6 and 8-year-old). Average teak log defects were straightness defect 1.87-3.53%, brittleness defect 1.19â€“6.21%, sapwood defect 1.49-4.82 cm, and wood knot defect 5.10-11.46 cm. However, the teak log quality still met the SNI 7534.2-2010 and 7535.2-2010 as raw material for exporting furniture.

Assessment of Five-Year Vegetation Cover Changes to Support Green Open Spaces Monitoring in Surakarta, Central Java, Indonesia Harahap, Moehar; Erny Poedjirahajoe; Sigit Heru Murti Budi Santosa; Mariah Ulfa
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Surakarta City's population is growing every year, putting pressure on the land and vegetation. Surakarta City has a population of 500,173 people in 2010. The population of this city is growing every year, driving an increase in the demand for land and living facilities. This study aims to analyze the availability of vegetated land as urban green space, and calculate the 5-year (2010â€“2015) vegetation cover changes. The methods used visual interpretation and on-screen digitization of the image Landsat 7 ETM+ satellite in 2010 and Landsat 8 OLI satellite image in 2015. The results show that the availability of vegetated land as urban green space in Surakarta City is lower than that mandated in Law Number 26 of 2007 concerning Spatial Planning. Vegetation cover decreased from 2010 to 2015 in Surakarta City, covering an area of 117.7 ha (2.6% of the city area) or an average of 23.5 ha (0.5%) per year. Research on the availability of green open spaces on a regular basis is expected to be part of the process of monitoring and evaluating urban development and as input for local governments in the decision-making process.

List of Content Vol. 4 No. 02, August 2021 August 2021, Vol. 4 No. 02,
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

List of Content Vol. 4 No. 02, August 2021

Effects of Gamma Ray Irradiation to Induce Genetic Variability of Teak Planlets (Tectona grandis Linn. F.) Ahmad Parlaongan; Supriyanto; Arum Sekar Wulandari
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Teak planlets (Tectona grandis) of Salomon clones were irradiated by gamma rays to induce genetic variability for growth improvement. The objectives of this research were to analyze the radiosensitivity of T. grandis Salomon clones by gamma ray irradiation and to analyze the genetic variations using Random Amplified Polymorphic Deoxyribonucleic Acid (RAPD). For those purposes, teak planlets were irradiated using gamma rays at 5 different dosages, those were 0 Gy, 10 Gy, 20 Gy, 30 Gy, and 40 Gy. Lethal doses50 (LD50) and reduced doses50 (RD50) were obtained using Curve-fit Analysis. Furthermore, the irradiated planlets were subcultured on medium MS + 0.1 kinetin (M1V0) the surviving M1V0 plantlets were multiplied to MS + 0.1 kinetin, so it is obtained the M1V1 generation. Genetic variation of the mutant was molecularly analyzed using RAPD methods and the variability was calculated using Analysis of Molecular Variance (AMOVA). Results of this research showed that lethal doses50 (LD50) and reduced doses50 (RD50) values were obtained at 24.5 Gy and 7.85 Gy, respectively. It includes genomes of small size and a small number of genomes. The genetic variation of mutant individuals in among and within the treatment of gamma irradiation was 16% and 84% according to AMOVA. It means that the dominant effect of genetic material caused genetic variation in mutant M1V1 generations. This dominance of genetic material could be caused by the response combination of tissue culture treatment and genetic factors that had the potency to be used as materials to select desired clones in the next stage.

Mangrove Utilization as Sources of Ruminant Feed in Belawan Secanang Subdistrict, Medan Belawan District Fahriza Zuhri; Delvian; Ma’ruf Tafsin
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Mangroves hold several benefits, one of which is barriers from marine abrasion, food sources, aquatic habitats, carbon sinks and storages, places for education and training, ecotourism sites, and sources of ruminant feed. This study aimed to determine the potential of mangroves as sources of ruminant feed and its carrying capacity for sustainable mangrove utilization. The research was conducted in Belawan Sicanang Subdistrict by using purposive sampling for vegetation analysis and questionnaire method. Avicennia marina, Bruguiera sexangula, B. gymnorrhiza, Nypa fruticans, Rhizophora apiculata, Sonneratia alba, and Thespesia populnea were among the mangrove species used by the farmer. The total capacity of mangrove species as ruminant feed in the animal unit (AU) was obtained as dry matter (835.48 AU), crude protein (481.24 AU), and total digestible nutrient (873.77 AU). The carrying capacity of mangroves as represented in the form of dry matter (13.74), crude protein (7.91), and total digestible nutrient (14.36), were categorized as safe. In addition, the potential additional populations based on the safe level of carrying capacity (2.5) was 273 AU, based on crude protein for 131 AU, and based on total digestible nutrients for 288 AU.

Study of policy determination to create a healthy watershed: A case study of Lepan watershed in Langkat district, North Sumatera, Indonesia Samsuri; Affifuddin, Yunus; Faisal Ridho
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Lepan watershed has declined in function over the past two decades. One of the contributing factors is unsustainable forest management and low public awareness in maintaining an ecosystem. Upstream damage occurs due to illegal logging and deforestation for agricultural purposes or exploitation of forest products. Meanwhile, the conversion of forest land into commercial or residential use occurs in the middle to downstream areas. The research used a descriptive analysis method based on Situation, Structure, Behavior, Performance (SSBP), and Analytical Hierarchy Process (AHP) method with data processing using the Expert Choice software. Research shows that the government's percentage of performance related to policies that have been implemented in the Lepan watershed is considered reasonable by the community, with a value reaching 62%. Alternatives in providing of Lepan watershed being healthy is returning of function by value weight 5.6, conservation by value weight 3.4, and planting by value weight 2.1

Performance Assessment Analysis of Forest Management Unit of Region I Stabat. North Sumatera Province saleh, rinaldy; OK Hasnanda Syahputra
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

The Forest Management Unit (FMU/KPH) Region I Stabat, Langkat Regency, North Sumatra Province has an important role in realizing success and forest management at the site level. The description of the performance of FMU development is required by policy makers as part of the policy evaluation. In the evaluation of the policy, an assessment of the substance, implementation, and impact of the policy can be carried out. Policy evaluation is functional, with the intention of providing input for process improvement and continuous improvement of performance measures. However, there are still problems in the field that must be addressed immediately so that forest resource management can run well, such as the unfinished process of boundary demarcation reconstruction, regional stability, investment mechanisms and so on. The purpose of this research is to assess the performance of the successful level of forest management implementation at the site level. The method used in the assessment is the analysis of the components of the criteria and indicators developed by Forest Watch Indonesia (FWI) Version 2.0, document verification, and in-depth interviews. The results of the assessment show that the FMU Region I Stabat has a fairly good performance in carrying out forest management in accordance with its function as a forest resource manager at the site level. Several criteria need to be strengthened so that these criteria can run well. These criteria include regional stability and investment mechanisms.

Study of the Potential and Development of Riam Sabada Natural Tourism Attractions in Sebatih Village Sengah Temila District Landak Regency West Kalimantan Province Slamet Rifanjani; Sesilia Indah Saptri; Muflihati
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Riam Sabada is one of the natural attractions in Landak Regency in the form of water flow over rocks with unspoiled nature and flora and fauna that potential to become tourist attractions. A potential assessment is carried out to find out whether the tourism object is the potential to be developed or not. Riam Sabada is one of the natural attractions in the Landak Regency, West Kalimantan Province. The study was conducted in October 2020 using observation and interview methods to 10 respondents selected by purposive sampling, which was determined intentionally by researchers. The respondentâ€™s criteria were community leaders, had ever visited tourist objects, and had knowledge about Riam Sabada tourism. Data were analyzed using Microsoft Excel. Riam Sabada's ODTWA potential assessment results in a score of 460.27, which was included in the classification as possible enough to be developed. The unspoiled cascade area was surrounded by shady trees, large rocks, and flora and fauna such as civets, birds, melaban, and orchids. Riam Sabada's natural tourism development strategy was to implement policies that support an aggressive strategy (SO strategy) where the strategy was in a favorable position because it maximized the strengths and opportunities of the tourist attraction. However, to support development, it was necessary to build facilities and infrastructure and to study the carrying capacity of the Riam Sabada tourist attraction

Biological and Cultural Ecotourism Interpretation of Mekar Utama Village, Kendawangan District, West Kalimantan Sarma Siahaan; Reine Suci Wulandari; Andre Sidabutar; Muflihati
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Mekar Utama Village, located in the Ketapang Industrial Forest Area (Hutan Ketapang Industri-HKI), is a unique and attractive ecotourism site with various natural resources. This village's three hamlets have the potential for biological and cultural ecotourism. The study aims to obtain potential data and interpret the biological and socio-cultural ecotourism in Mekar Utama village. The method used was a survey with observation and interview approaches. Three interpretive tracks and 18 biological and cultural ecotourism potential were available at the study site. Nine potential plants found were kantung semar (Nepenthes sp. ), bamboo (Bambusa sp. ), bajakah (Spatholobus littoralis Hassk), pasak bumi (Eurycoma longifolia Jack), ulin (Eusideroxylon zwageri), meranti (Shorea smithiana), gaharu (Aquilaria malaccensis), ketatai (Antiaris toxicaria) and pulai (Alstonia scholaris). Ulin, meranti, and gaharu are protected species. Kura-kura hutan (Dogania suplana), owa kelawat (Hylobates albibarbis), and honey bee (Apis koschevnikovi and Trigona sp.) were three unique animal species. Six potential cultures were found, i.e. ethnic, traditions, traditional rituals, arts, special foods, historical/sacred places, and folklore/myths. All the potentials were found in three interpretation tracks, i.e., the Gantang river hamlet, which was 6.5 km long and took 26 minutes to reach, the Sukaria hamlet, which was 5.3 km long and took 21

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Contact Name
Moehar Harahap

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mhr_mrghy@usu.ac.id

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Journal Mail Official
jsi@usu.ac.id

Editorial Address
Campus 2 USU Bekala, Deli Serdang, North Sumatera, 20353, Indonesia

Location
Kota medan,

Sumatera utara

INDONESIA