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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 136 Documents

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The Valuation of Thinning Efectivity Based on Increment Respond of Natural Forest Log Over Area Farida Herry Susanty
Journal of Sylva Indonesiana Vol. 3 No. 02 (2020): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Efforts to increase the natural forest productivity was conducted using several ways one of which is through thinning but the effectiveness is not well known yet. The research aims to evaluate the effectiveness of the application of thinning techniques to logged-over natural forests based on the response of the stand increment. The study design was an 11-year-old logged-over natural forest stand that was carried out systematic thinning, thinning based on built trees and without treatment with a total area of 24 ha. Data collection is done by census inventory of trees with limit diameter of 10 cm per 2 years periodically. Stand conditions in the research plot varied in value range of density (419-510 stems ha-1) and the base plane (22.66-28.20 m2.ha-1) which were not too wide. The results of the calculation of the base plan of the stand shows that systematic thinning yields a larger stand increment (0.78-1.95 m2.ha-1.2th-1) compared to thinning based on built trees and without treatment. Thinning gives more responsive results for the Dipterocarp species group (the increment value is almost twice to normal) compared to non Dipterocarp. Based on the regression analysis, function of time period has correlation between 25-33% to the basal area increment. A systematic thinning technique approach that is more appropriate for increasing stand productivity.

List of Content Vol. 03, No. 02, August 2020 August 2020, Vol 3 No 02,
Journal of Sylva Indonesiana Vol. 3 No. 02 (2020): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Journal of Sylva Indonesiana Vol. 3, No. 02, August 2020

The Relatedness of Community Perception with The Actions in Forest Pest Management Haneda, Noor Farikhah; Yulius Hero; Derry Ferdani Rustanzi
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Pest attack on the forest can have an impact on the productivity and quality of existing stands (such as reducing average plant growth, decreasing seed germination power, and appearance of forest aesthetics). This study aims to identify the types of pest management and analyze the relationship between perception and community actions in the community forest in Karyasari Village, Leuwiliang District, Bogor Regency. Data collection is done by semi-structured interview, observation and recording of secondary data. The type of pest management carried out by the community uses three pest management techniques, including chemical, mechanical and a mixture of chemical and mechanical. Farmers do not use biological techniques. Mechanical pest management is less used in society compared to chemical management. Many farmers use chemical management techniques with pesticides because they kill pests quickly. In addition, some small farmers use a mixture of chemical and mechanical management. There is a relationship of perception with the characteristics of respondents, such as land area, education and role in society. There is a relationship of action with the characteristics of respondents, such as the role in society, land area, education and employment.

Analysis of Regional Regulation Number year 2015 Implementation on Urban Green Space Management in Mataram City Dini Ardiantari, Lale; Ichsan, Andi Chairil; Webliana, Kornelia
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Green open space is an area that has a function as well as a place to grow plants, both those that grow naturally and are planted. One way to improve environmental quality and revitalize urban ecosystems is by managing the Green Open Space. One of the alternatives supporting this effort is to make supportive and applicable policies, laws, and regulations. This research was conducted to examine the implementation of Regional Regulation Number 8 of 2015 regarding Green Open Space Management in Mataram City and to find out planning strategies in optimizing the implementation of applicable policies. The method used in this research is literature study method, interview, and observation. In this study, six criteria are used based on William N. Dunn's theory to analyze policies and SWOT analysis to determine the appropriate management strategy. The policy implementation analysis results show that the implementation of these regional regulations falls into the "medium" category with a score of 2.13. This indicates that several indicators need to be tightened to optimize policies' effectiveness, so it is necessary to revise policies to maximize implementation. Several strategies that can be carried out to maximize the role of stakeholders are disseminating information about the content of local regulations that are applied to all related parties, explaining the programs that will be implemented to create a common understanding for all parties as a whole based on the objectives to be achieved, optimizing local regulations which applies to improve coordination in the implementation of green open space management which aims to maximize the role between agencies to create adequate technical personnel, facilities and infrastructure and synchronize the main tasks and functions of each agency in implementing green open space management to maximize their respective roles.

Rainfall Observation and Utilization of Rooter System Technology to Increase Water Infiltration Rate in Urban Area Utomo, Budi; Juliana Rosmawati Marpaung; Yogi Ganda Gatika Togatorop; Afifuddin Dalimunthe
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Increasing and developing infrastructure in urban areas has resulted in decreased water infiltration quality into the ground. The increasing of settlement needs and raising its price has resulted in many water catchment areas changing their function unconsciously in urban areas. This condition was ultimately triggering the loss of opportunities for rainwater to into the ground. At present, when the rainy season arrives, almost all major cities in Indonesia experience flooding. The torrential rains that lasted just 1 hour were enough to cause relatively high inundation, which varied from 30 cm to over 1m. This study aims to analyze the intensity of rainfall and its impact on the potential for flooding in urban areas and how to overcome it by utilizing rooter system technology. The results showed that the 4-way rooter system technology's influence was considerable in reducing the water level. An experimental area of 100 m2 treated with a rooter system of 16 pipes with a water level of 40 cm can infiltrate stagnant water into the soil within 120 minutes. Meanwhile, in the same area without rooter technology, it takes 400 minutes to absorb water into the soil until the stagnant water is completely gone. This proves that the rooter system technology plays a significant role in accelerating water absorption into the ground, reducing the risk of flooding.

DNA Barcoding of Rattan (Arecaceae) From Gunung Walat Education Forest, Sukabumi-West Java Baiquni Rangkuti, Ahmad; Arida Susilowati; Siregar, Ulfa Juniarti; Irmayanti, Laswi; Siregar, Iskandar Zulkarnain
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Rattan is a forest plant that has high economic and ecological value. This species grows in various habitats because of its good adaptability. Gunung Walat education forest (GWEF) is an ex-situ conservation location owned by IPB University and rattan conservation potential. In 2005 rattan were planted in this area from some material source in Indonesia, but the information regarding its identity was still limited. Therefore, this study aims to identify rattan in GWEF using barcode methods. Four barcoding those were rbcL, matk K, psbA-trnH, and ITS 1 was used for this purpose. Molecular analysis was conducted through DNA extraction using the CTAB method, DNA quality and quantity observation using electrophoresis and Polymerase Chain Reaction (PCR) amplification. The result of this research showed that DNA barcodes show a different

Editorial 2021: Letter from the Board of the Journal of Sylva Indonesiana (JSI) Nuryawan, Arif; Heri Iswanto, Apri
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

This letter is a second editorial in the fourth year of Journal of Sylva Indonesiana (JSI)â€™s establishment. This editorial contains messages from the boards, comprised of a former and a chief editor of this journal, about development of this journal, statistics of the published articles, acknowledgment, and closing remarks. JSI has been accredited by Ministry of Research and Technology, Republic of Indonesia with third rank (Sinta 3) since first volume of the publication. During the development of this journal, 25 scientific articles and 1 editorial have been published with peer-reviewed. Classification according to aim and scope of this journal resulted in study field of sylviculture as the major (20%) of forestry and natural resources theme, while the other fields maintained their relative portion. Acknowledgments have been conveyed to contributors of this journal (authors, reviewers, editors, publishers, and readers). Closing remarks were consisted of condolence news, a glimmer of hope to return a normal post pandemic situation, and of course a wish all contributors a very happy, healthy and successful year of 2021.

List of Content Vol. 4 No. 01, February 2021 February 2021, Vol. 4 No. 01,
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

List of Content Vol. 4 No. 01, February 2021

Morphological diversity of mindi (Melia azedarach) from agroforestry system in North Sumatra, Indonesia Rambey, Ridahati; Susilowati, Arida; Anna, Nelly
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Mindi (Melia azedarach) is a fast-growing woody plant with potential for community forest development. Mindi wood is used to furniture material, parquet, fancy plywood, and fancy laminated veneer, and it is also exported. Although the community forest in Deli Serdang Regency is established as a seed source for mindi in North Sumatra, information on its diversity is still lacking. The aim of this research was to get information about morphological differentiation of mindi in Deli Serdang Regency. Direct observation and measurement on morphological and growth character of mindi had been conducted in three populations of community forest in Deli Serdang Regency. Those were Percut Sei Tuan population, Biru-Biru population, and Pancur Batu population. The result showed that of 19 observed morphological characters, there were two characters: number of leave and fruit weight able to differentiate the populationsâ€”individual tree from three population clustering into three groups. The first cluster consists of 35 individual trees from Percut Sei Tuan (7 trees), Biru-Biru (12 trees), and Pancur Batu (16 trees). The second cluster consist of 24 trees originated from Percut Sei Tuan (13 trees), Biru-Biru (8 trees), and Pancur Batu (3 trees). A third cluster consists of one tree from Pancur Batu.

Forest Structure of 26-Year-Old Planted Mangroves Ruhuddien Pandu Yudha
Journal of Sylva Indonesiana Vol. 4 No. 02 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

The mangrove ecosystem in Bintuni Bay, West Papua, Indonesia has been sustainably managed for more than three decades for timber utilization. Since there are only few mangrove areas that utilized for logging in Indonesia, data on growth and forest structure of post-harvest mangrove forest could become valuable information as a reference for sustainable management on the ecosystem. This study conducted in a permanent plot (1.6 ha) which established and planted in 1994 using 5 dominant and commercial species in Bintuni Bay. Rhizophora apiculata has the best growth compared to other species, while Ceriops tagal experienced the poorest growth. From all trees individual, 24.27% were categorized as multi stem trees with maximum of 8 stems that could be occurred from one single tree and contributed to increase total volume of the stands up to 33%. Bruguiera gymnorhiza has the highest percentage of multi stem trees covering 65.87% of total trees individual. In general, forest structure was not significantly different in various spacing distance. Merchantable volume for 5 planted species at 26-year-old stand was estimated to be 310.99 m3 ha-1 with extractable biomass of 247.08 ton ha-1. Planted mangroves can provide sufficient standing stock for future utilization in managed mangrove forests.

Page 4 of 14 | Total Record : 136

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Moehar Harahap

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

Location Kota medan, Sumatera utara INDONESIA

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Contact Name
Moehar Harahap

Contact Email
mhr_mrghy@usu.ac.id

Phone
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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