cover
Contact Name
Indra Aulia
Contact Email
indraaulia@usu.ac.id
Phone
-
Journal Mail Official
apri@usu.ac.id
Editorial Address
-
Location
Kota medan,
Sumatera utara
INDONESIA
Journal of Sylva Indonesiana
ISSN : 26225093     EISSN : 26225158     DOI : -
Journal of Sylva Indonesiana (JSI) provides a forum for publishing the full research articles in the field of forestry and natural resources related to forestry science.
Arjuna Subject : -
Articles 25 Documents
Editorial of the First Edition Journal of Sylva Indonesiana Slamet, Bejo; Nuryawan, Arif
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

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Abstract

This editorial is an opening remark of the first edition Journal of Sylva Indonesiana (JSI) containing the growth and development of the journal managed by Faculty of Forestry Universitas Sumatera Utara (“Fahutan USU”). In the first stage, “Jurnal Ilmiah Pertanian Kultura” published by Faculty of Agriculture USU has been targeted by faculty member of “Fahutan USU” for dissemination of their research results. This journal has been accredited by Directorate General of Higher Education in 2003 consequently its scope become specific, forestry science did not include therein. Hence, at that time, Program Study of Forestry Science under management of Faculty of Agriculture USU initiated the issuing of Peronema Forestry Science Journal in 2005 in order to accommodate scope of forestry science. Unfortunately the service and production of this journal become stagnant because most of the editorial staff pursued higher education in outside Medan city and the funding for publishing and printing vanished. In 2012, with the new spirit, Program of Forestry Science re-issued the new journal called “Foresta” Indonesian Journal of Forestry. It was a pity, the production process of this journal discontinued regarding to no submission of the manuscripts. All of the research results of undergraduate students of Program Study of Forestry Science have been uploaded into Peronema Forestry Science Journal in online version since 2014. In connection with establishment of organization structure of Faculty of Forestry completely, the publishing of JSI has been started in 2018 even though the editorial works of this journal has been begin since 2017, comprise call of paper, blind-review process, correspondence with the authors, layout and editing, including upload in the journal website. Supply of the manuscripts is provided not only from undergraduate research results of Faculty of Forestry’s students but also from the outside. With the commitment of the funding from the Faculty of Forestry USU, hopefully JSI can reach the target as the national accredited journal and it can achieve the status to be a reputation journal in the field of forestry in the future.
Estimation Model of Ramin (Gonystylus bancanus) Standing Stock in Peat Swamp Forest: Case Study in Sumatra and Kalimantan Samsuri, Samsuri; Jaya, I Nengah Surati; Lastini, Tien; Purnama, Edwin Setia
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

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Abstract

Multiple sampling technique was applied to estimate ramin (Gonystylus bancanus) standing stock in peat swamp forest by combining imagery analysis (phase I) and field measurement (phase II). The objectives of this research were to obtain (1) estimation model of stand volume, (2) estimation model of G. bancanus standing stock, and (3) volume of standing stock of G. bancanus in Sumatera and Kalimantan peat swamp forests. The research was conducted in peat swamp forest of Sumatera and Kalimantan Island. ALOS AVNIR image interpretation was completed to obtain crown density and used as independent variable for developing stand volume model. Cluster sampling was used to obtain field data from circle sample plot of 0.1 ha and square sample plot of 0.25 ha. Spatial analysis was conducted to map and calculate standing stock of G. bancanus for Sumatera and Kalimantan Island. Estimation model of stand volume was V bf = 0.1851 C field1.05234 (R 2 =0.62) for Sumatera peat swamp forest and V bf = 3.1163 e 0.041 Cfield (R 2 = 0.62) for Kalimantan peat swamp forest, respectively. We estimated that standing stock of G. bancanus of peat swamp forest in Sumatra and Kalimantan was 5% and 2.3% of the total stand volume, respectively. Base on both the estimation models, standing stock of G. bancanus in Sumatera peat swamp forest was 15,351,063 m 3 and in Kalimantan peat swamp forest was 6,004,874 m 3 .
Effect of Particle Length to the Quality Particleboard Made from Sorghum Bagasse Iswanto, Apri Heri; Prabuningrum, Dita Sari; Azhar, Irawati; Supriyanto, Supriyanto
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

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Abstract

The objective of this research was to evaluate the effect of length size particle on physical and mechanical properties of particleboard. Sorghum bagasse was cut into 3, 5, and 7 cm length size. Furthermore, particles were dried until reached of4% moisture content. Amount of 10% urea-formaldehyde (UF) resin used for binding. Hot pressing process conducted in 130C temperature for 10 minutes and 30 kg cm -2 pressure. The results showed that thickness swelling (TS) and internal bond (IB) did not fulfill of requirement of Japanese Industrial Standard (JIS) A 5908 (2003). According to all parameters, 3 cm length size of particle was resulting in the best properties.
The Influence of Wood Species and Type of Strands Arrangement to the Physical and Mechanical Properties of Oriented Strands Board Nuryawan, Arif; Massijaya, Muh, Yusram; Hadi, Yusuf Sudo
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
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Abstract

This research was concerning in mat forming method for production of oriented strands board (OSB) in laboratory scale. There were three prototype models of OSB resulted in method applied, namely manually alignment’s model, using former device tool adopted from Nishimura’s model, and using former device made of plywood and wire’s model. From the physical and mechanical properties evaluation, the best mat of OSB was resulted in the third model, using former device made of plywood and wire.
Institutional Analysis of “Gapoktan” In the Protected Forest Management Unit Area of North Kota Agung in Tanggamus Regency of Lampung Province Aminah, Lina Nur; Safe'i, Rahmat; Febryano, Indra Gumay
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
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Abstract

The Forest Management Unit (FMU) is the area unit of forest management which its area has been set up with clear boundaries, it has been the predominant covered by forests, it has been managed for long term including their was an explicit objective which declared in the forest management plan. FMU IX is a part of FMU area which is located in North Kota Agung. It has obtained processing area permit through CF program (CFM). CFM managed by Gapoktan (Association of Farmers Groups) who has obtained management area license. Good or bad of the CFM depends on the farmers who are incorporated in “Gapoktan” therefore research on the role of this institution is needed. This study aimed: 1) to analyze the institutional system in two Gapoktan, namely Beringin Jaya and Sinar Mulya in the boundary of CFM land in FMU IX areas of North Kota Agung, and 2) to evaluate the level of effectiveness of “Gapoktan” organization. Appeal data have been developed by the method of SSBP (situation-structure-behavior-performance). The results showed the different performance of both Gapoktan . Beringin Jaya has had good institutional situation, its organizational structure was running well, its member behavior was active in every activities, and performance was very good. Meanwhile in Sinar Mulya, its organizational structure was not going well, the activities were lack hence its performance was not satisfied. The result of the effectiveness level at Beringin Jaya was effective, on the other hand the effectiveness level at Sinar Mulya was quite effective.
Application of Point Sampling Method in Estimation of Stand Basal Area in Community Forest Mulyana, Budi; Rohman, Rohman; Purwanto, Ris Hadi
Journal of Sylva Indonesiana Vol 1 No 1 (2018): Journal of Sylva Indonesiana
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Abstract

Estimation of the potency of community forest is usually done with the census approach for each forest. Sampling methods to estimate the potency of community forest are still rare. The size of community forest is relatively small, scatter, and less irregular shape, therefore the estimation of community forest potency using sampling plot is difficult to apply. The approach of sampling without a plot (plotless/ point sampling) was cheaper and faster compare to the method of sample plots and direct measurement (census) in predicting basal area. The objective of this research is determining the difference in the average value of basal area using direct measurement of stand (census) and point sampling methods. The research was carried out for 4 months in 30 community forests at Kemuning Village, Gunungkidul District. Materials used to estimate basal area with point sampling method were Spiegel Relascope and Bitterlich Stick with the value of Basal Area Factor 1. Parameters measured were diameter at breast high (dbh) for census method and the number of trees were categorized in or border for point sampling method. The result was analyzed statistically using unpaired t-student. The result showed that the average of basal area of tree in community forest with point sampling method were no significantly different from the average of basal area with census method (α = 1%). Therefore, the point sampling method can be considered as a tool in inventory at community forest
Vulnerability Study of Coastal Communities in the East Lombok in Facing the Impact of Climate Change Ichsan, Andi Chairil; Waru, Tenri
Journal of Sylva Indonesiana Vol 2 No 1 (2019): Journal of Sylva Indonesiana
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Abstract

This study aims to assess the vulnerability of coastal communities to climate change in eastern lombok district by examining exposure, sensitivity and adaptation capacity in ten coastal villages in East Lombok regency. The basic concept of the implementation of this study was constructed qualitatively, using a participatory approach. The method of study was adopted from the PRA (Participatory Rural Appraisal) method with adjustments to coastal and marine context contexts called Indonesian climath adaptation tools for coastal habitat (I-CATCH). The results of this study indicate that most of the villages that are the focus of the implementation of this study have moderate to high vulnerability levels. The impact of the occurrence of climate disaster sufficient to burden the community both from the physical, social, and economic aspects. Thus, it takes a systematic planning and integrated with existing policies to ensure its implementation in the field
The Physical Properties and The Extractive Content of Sugar Palm Stem (Arenga pinnata) Hartono, Rudi; Muhdi; Nainggolan, John Parulian
Journal of Sylva Indonesiana Vol 2 No 1 (2019): Journal of Sylva Indonesiana
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Abstract

This study aims to determine the physical and chemical properties of sugar palm. Physical properties include moisture content, density, and shrinkage from wet to dry oven chemical properties included of extractive solubility in cold and wet solutions. The samples were 15 years of age and originated from Sidikalang, Dairi district, North Sumatra. Three individual samples were taken and cut into 50 cm of length of three types of height namely base, middle, and end. The research was also conducted horizontally (edge, center, and at the core). The results of this study indicated that the average water content was 120.31-603.48%, the specific weight was 0.12-0.51 g/cm3, and the shrinkage from wet to dry oven was 28.06-77.69%. The extractive solubility in cold water was 11.66-87.22%, while in hot water was 10-90%. Based on the specific weight/density obtained, the outer part or edge of the palm sugar was included in the strength classes IV and V.
Analysis of Carbon Above The Ground As The Indicator of Forest Health In Protection Forest Registers 25 Lestari, Rayi Nindya ; Wulandari, Christine ; Safe’i, Rahmat ; Darmawan, Arief
Journal of Sylva Indonesiana Vol 2 No 1 (2019): Journal of Sylva Indonesiana
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Abstract

Forest health is very important in the whole world, when global issues such as air pollution, acid rain, forest fires, quality and quantity of water, and global climate change has affected the realization of a sustainable forest.  Achievement of forest preservation in a forest ecosystem, criteria and indicators have been widely formulated.  Therefore, carbon analysis is significantly needed to figure the indicator of forest health. The aim of the research was to analyze the carbon as a forest health indicator in Protection Forest, Reg. 25. The data were collected through cluster plot based on Forest Health Monitoring (FHM) method.  The calculus of the amount of stored biomass within the tree was referring to Ketterings, et al, (2001) is W = 0,11 x ρ x D2,62, mean while under growth and litter biomass are gained from total dry weight. Carbon sink is based on conversion number; 0,5 out of total biomass number. The average of carbon stored in Protection Forest Reg. 25 is about 939,12 ton/ha. Carbon within the stands are contributed the most; 937, 43 ton/ha, litter carbon about 1,06 ton C/ha and undergrowth carbon is about 0,63 ton C/ha. Based on the analysis, carbon can be a health indicator of Protection Forest Register 25 with the category of ugly, moderate, and good.  Cluster plots 1 and 2 included good category (1,232.75 ton C/ha -- 1744.13 ton C/ha).  As for cluster plots 3 and 4 included ugly category (209.97 ton C/ha -- 721.35 ton C/ha).
Adaptability of Kemenyan Toba (Styrax sumatrana) and Suren (Toona sureni) On Gold Mining Tailing Susilowati, Arida; Ahmad, Alfan Gunawan ; Sirait, David Raymod
Journal of Sylva Indonesiana Vol 2 No 1 (2019): Journal of Sylva Indonesiana
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Abstract

Tailing was residue of gold mining process which lead to some environment problem. Beside containing heavy metal, tailing have lower soil fertility, physical, chemical and biological characteristics. To overcome this problem, revegetation activities was needed. The succesfulness of revegetation activities determined by adaptive trees selection. Local species was recommended because suitable to local climate and soil conditions, in this study we choosed toba benzoin (Styrax sumatrana) and suren (Toona sureni). The objective of this research was to get information about adaptability of toba benzoin and suren  on growth media containing tailings. Research was conducted in green hause Faculty of Agriculture, University of Sumatera Utara. Factorial Randomized Completely Design with two factor were used in this research. The first factor was growing media (Factor A) and the second factor was seedling species (Factor B). The observed parameter were seedling height, seedling diameter, seedling dry weight, primary root lenght, shoot-root ratio and chemical properties of media. The results showed that the species and growing medium significantly affected the height growth of seedlings, seedling diameter, seedling dry weight and length of the primary root. The addition of topsoil and compost able to improve the chemical properties of the tailings are used. Tailings media and compost with composition ratio of 1:1 is recommended for Toba benzoin and Suren. That media provide the most optimal results of Toba benzoin and suren growth.

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