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Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 304 Documents
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ANALISIS NILAI EKONOMI KEBERADAAN WISATA ALAM DANAU SIAIS DI KABUPATEN TAPANULI SELATAN Zulka Hidayati; Agus Purwoko; Ma’rifatin Zahra
Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This study aims to calculate the economic value of Lake Objects Nature Siais, Rianiate, Angkola District West, South Tapanuli using travel cost method, knowing the intensity of the visit and to determine the factors that affect the intensity of the visit. The number of samples used in this study were 100 respondents, while sampling using quota sampling technique. Based on research conducted obtain economic value of natural attractions of Lake Siais using travel cost method is for Rp.364.326.492, 6 /tahun. The intensity of tourist visits to Lake Siasis Nature is as much as one visit, while the factors affecting the intensity of the visit is the level of income and the time needed to tourism. Keywords: Natural Attractions: Lake Siais, economic value, the cost of travel, the intensity of the visit.
Perbandingan Unit Contoh Lingkaran dan Tree Sampling Dalam Menduga Potensi Tegakan Hutan Tanaman Rakyat Pinus (Studi Kasus Desa Pondok Buluh, Kecamatan Dolok Panribuan, Kabupaten Simalungun) Okto Prayitno Siahaan; Siti Latifah; Yunus Afifuddin
Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Information on the potential of forest stands is necessary to know the state and the amount of natural resources contained therein. Potential stands a forest area estimates can be obtained by various methods. This study aims to estimate and compare the potential stands between sample units and determine the most efficient unit instance performed in forest crop production. This study uses systematic random sampling with a sample on circular plots and tree sampling. Circular plots used area of ​​0,05 ha (12,62 m diameter) and tree sampling using 6, 8 and 10 trees in the sample. The results showed the best efficiency levels obtained 6 trees sampling, and accuracy approaching sample of circular plots. Circular plots had the lowest sampling error. Sampling error is less than 5%, so the circular plots had the highest accuracy compared to other sample units. Thus, the circular plots is a sample of the recommended applied to the public plant forest. Keywords: Potential stands, Samples, sampling error, efficiency
Analisis Perubahan Tutupan Lahan Kabupaten Karo Arie Yerikho Ginting; Siti Latifah; Rahmawaty Rahmawaty
Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Land use and land cover is an important component in understanding the interaction of human activities with the environment. Forest management include the planning and supervision in the Karo regency forest becomes very important to do in order to prevent degradation of the forest more severe. The purpose of this study was to quantify changes in land use from 1997 to 2012 and makes predictions extensive land use in 2018 and 2024. This research methods  to utilize remote sensing technology and geographic information systems (GIS) and then compare the 5 maps of land use interpretation of Landsat ETM + (1997, 2000, 2003, 2006 and 2009 ). Classification results show that the Karo Regency has 11 land cover classes. The equation obtained from the linear regressions used to predict land cover area.The results showed that widespread changes in land cover occurred in dryland farming into rice paddies. Therefore, it is necessary that proper spatial planning in Karo Regency. Key word : land use change, land cover, landsat ETM+ image
ANALISIS PEMASARAN KEMENYAN (Styrax spp.) (Studi Kasus : Kec. Pollung, Kab. Humbang Hasundutan) Bobby Raya Simanjuntak; yunus afifuddin; Ridwanti Batubara
Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forest incense owned District Pollung potential managed and marketed for economic improvement. It aims to analyze the marketing groove incense, knowing economic value from incense and determining marketing strategies in District Pollung, District Humbang Hasundutan. The method applied is purposive sampling with total sample of 40 (forty) respondents. Data collected through observation and analysis problems with interviews using questionnaires to farmers and entrepreneurs incense. Overall data, both primary and secondary, then tabulated according to need. The value of highest profit margins obtained farmers on market II, amounting to 72.22% and the smallest profit margins in the village collecting 10% on market I. The largest average income is equal Rp.2.829.400/ family leader/month in Pandumaan. While the smallest income of Huta Paung Utara Rp.1.024.600/family leader/month. Strategic marketing priorities incense is formed farmer groups and cooperatives at the village, the supervision of the marketing system incense, incense sustainable management, human resource and the use of incense superior seedlings. Keywords: incense, marketing, economic value and marketing strategy
Sifat Fisis dan Keawetan Alami Kayu Pengkih Terhadap Serangan Rayap Tanah (Macrotermes Gilvus) Jon Herianta Ginting; yunus afifuddin; Luthfi Hakim
Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Availability of wood species from natural forest that commonly used for building contructions, meuble, craft and industrial materials nowadays is increasingly limited and not balanced with increasing the needs of wood. To fulfill the needs should be used the species of wood that easily obtained, such as the species that are less well known from natural forest or cultivated by people. The purpose of this research is to evaluate the physical propersties and natural durability of pengkih wood towards termite attack. These physical properties testing is based on the ASTM D 143-94 standard with three replications in each sample. These natural durability of wood testing based on the SNI 01-7207-2006 standard with four replications in each sample. Based on the results of this research pengkih wood is including class II of wood strength, that have value of density substance is 1.5 and including class I of grade durability with percentage of weight lose about 0.3-0.6%. The smallest value of attack intensity is in the  wooden base and the largest is in the end of the wood. .   Key words : Pengkih Wood, physical  properties, natural  durability, termites
Pengawetan Kayu Karet (Hevea braziliensis MUELL Arg) Menggunakan Asam Borat (H3BO3) Dengan Metode Pengawetan Rendaman Panas Dingin Preserving of Rubber Wood (Hevea braziliensis MUELL Arg) Using Boric Acid (H3BO3) With Cold and Hot Soaking Preservation Nadya Putri; Evalina Herawati; Ridwanti Batubara
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The objectives of this research were to calculate the amount of retention and penetration scores and to examine the stability of dimension and strength of rubber wood after conserving with boric acid preservative (H3BO3). The method applied in this research was hot and cold soaking . After a test sample was preserved with boric acid, then its retention, penetration, and ASE scores were calculated, and the examination of MOE and MOR was conducted eventually. In this research, the best concentrate was gained at treated concentrate 3 % for the retention score, penetration and ASE scores are 1.39 kg/m2, 0.89 mm, and 2.65 %. While the highest MOE and MOR score was gained at 0% concentrate (controlled) with 17619 kg/m2 and 210 kg/m2. The retention and penetration scores increased as the concentrate increased. But the distribution the preservative was able to decrease the strength of wood. Keywords : preservation, rubber wood, boric Acid, MOE, MOR
Karakteristik Fisis dan Mekanis Papan Semen Bambu Hitam (Gigantochloa Atroviolacea Widjaja) dengan Dua Ukuran Partikel Physical and Mechanical Characteristics of Cement Board Bamboo Hitam (Gigantochloa atroviolacea Widjaja) Using Two Particle Sizes. Rini Armaya; Evalina Herawati; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Cement boards was made ​​from bamboo hitam (Gigantochloa atroviolacea Wdjaja) using two particle sizes of 20 mesh and 40 mesh. The difference in particle size thought to affect the quality of the resulting cement board. The purpose of this study was to evaluate the physical and mechanical properties of cement board bamboo hitam using two  particle sizes.Boards were made ​​with size 25 cm x 25 cm x 1 cm with density of 1.2 gr/cm3 of two different particle size of 20 mesh and 40 mesh and each made ​​in three replications. Cement board was made with ratio of particles, cement and water in 1:3:2 and the addition of MgCl2 catalyst was 5%. In general, physical properties of  cement board had completed the standard JIS A 5417-1992, both cement board particle size 20 mesh and 40 mesh. Physical properties of  cement board using particle size of 40 mesh better than  cement board using particle size of 20 mesh. MOR value of  cement board using particle size of 20 mesh had met standard while the value of MOE did not complete the standard. Internal bond and screw holding strenght did not require in standard JIS A 5417-1992. Cement board using particle size of 20 mesh had better mechanical properties than cement board using particle size of 40 mesh. Keywords: bamboo hitam, particle size, cement board, physical properties, mechanical properties
Respon Eksplan Biji Gaharu (Aquilaria malaccensis Lamk.) Terhadap Pemberian 2,4-D Secara In Vitro (Effect of Plant Growth Regulator 2,4-D on Seed Explant A. malaccensis in vitro ) Itonamy Boru Tonga; Edy Batara Mulya Siregar; Nelly Anna
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

ITONAMY BORU TONGA. Effect of Plant Growth Regulator 2,4-D on  Seed Explant A. malaccensis in vitro. Guided by Dr. Ir.Edy Batara Muyla Siregar Ms. And Nelly Anna S. Hut. Msi. Aquilaria malaccensis Lamk. is one of the tree forest that are continuosly exploited. Currently, the Indonesian export of the agarwood was decreasing because its population was endangered by excessive logging. Agarwood propagation need technology for reproduction of agarwood multiplication. Research was undertaken to determine effect of plant growth regulator 2,4-D on seed explant A. malaccensisi in vitro has been performed. This research had purpose to determine  response of seed explant of gaharu by giving different cosentration 2,4-D and to measure growth and developtment result of seed explant of gaharu. This research used a complete Randomized Non Factorial Design with using MS as basic media by added 2 ppm of BAP. The treatment consisted of 2,4-D 2 ppm, 4 ppm, 6 ppm and 8 ppm. Observation made explants fourty two days after planting. The parameter observed were the emergence of callus, callus color and  texture of the callus.  The result showed that callus was obtained as response of A. malaccensis seed explant with 2,4 D and BAP. The concentration 2,4-D 2 ppm showed the best result for the emergence of callus. Callus color is dominate by white and a bit yellow or scoring 4, and the callus texture is dominate by compact callus and compact with node. Keywords: Effect, 2,4- D, in vitro, A. malaccensis Lamk.
NILAI EKONOMI DAN KONTRIBUSI HUTAN RAKYAT BAMBU (Bambusa sp) (Studi Kasus di Desa Telagah, Kecamatan Sei Bingai, Kabupaten Langkat) ECONOMIC VALUE AND CONTRIBUTION OF PEOPLE BAMBOO FOREST (Bambusa sp) (Case Study at Telagah Village, Sub District of Sei Ricardo Felixon Simatupang; Siti Latifah; Yunus Afifuddin
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Bamboo (Bambusa sp) is a forest plant that has many benefits but is not yet used by forest communities widely. This study aims to determine patterns of distribution, economic value and contribution of Bamboo.  This research was using purposive sampling technique. Based on research conducted bamboo evenly to the patterns of distribution and the dominant grows at an altitude of  700-1100 mdpl, while the highest economic value of bamboo is Rp. 9.450.000/year and the lowest economic value is Rp. 810.000/year, while the highest contribution of Bamboo to people’s income is 33,40% and the lowest contribution of Bamboo is 4,84%   Keywords: Bamboo, Distribution Pattern, economic value, contribution, income
Sebaran Daun Sang (Johannesteijsmannia altifrons) Berdasarkan Kelerengan dan Ketinggian Tempat / Distribution of Daun Sang (Johannesteijsmannia altifrons) Based on Slope and Altitude of Place Siti Harianti Manurung; Siti Latifah; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Daun Sang is an plant endemic of Sumatera. This plant only found in two places in Indonesia in Bukit Tigapuluh National Park and Gunung Leuser National Park. This research is important to rescue Daun Sang. Based on spatial analysis can provide important and accurate information about the habitat linkages of Daun Sang. Daun Sang of the components of a particular habitat, areas that may be used as habitat for Daun Sang, or they can be for the predict Daun Sang population in an area and view information about the condition of habitat at any given time. This study aims to map the distribution of Daun Sang and predict the level of habitat suitability based on altitude. Belt Transect used  for this research and overlap (overlay) to create a map of the distribution of Daun Sang. The results showed that Daun Sang were found scattered near each other between one individual with another individual on sloping land and grow in the shade of the trees. Daun Sang habitat suitability for altitude in the resort level Sei Betung is ≥ 60 masl and high suitability for level terrain is "very steep" (≥ 45%). Keywords: Daun Sang (Johannesteijsmannia altifrons), Spatial Analysis, Resort Sei Betung.

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