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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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MODEL SPASIAL TINGKAT KERAWANAN KEBAKARAN HUTAN DAN LAHAN DI KABUPATEN ROKAN HILIR Nidya Andini; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Land and forest fires in Indonesia have become the public headline which give an impact to environmental, social and economical losses. Riau is one of the region contribute to the largest smoke annually. Based on hotspot data in 2011 until 2014 from NOAA 18 and TERRA AQUA, Rokan Hilir District in Riau is one of the district with the most hotspot.  This research is aimed to find correlation between hotspot density with fire triggers factor and to find spatial model distribution of land and forest fire index in Rokan Hilir District. This research located in four sub-district, they are Bangko, Pasir Limau Kapas, Kubu and Tanah Putih sub-district. This research used GPS, ArcGIS, ArcView and  SPSS. The research method used was primary and secondary data collecting. Spatial data analysis was performed to obtain mathematical models and visualized to have a land and forest fire risk index in Rokan Hilir District.  This research show that the farm, the closest distance to road, farthest distance to city center district and the closest distance to river is the triggers factor that has the highest of hotspot density. Spatial model of land and forest fire risk is y= 0,031+0,005X1+0,006X2+0,013X3+0,004X4 with determination coeficient value is 80,4%. The highest forest fire risk is in the farm in Pasir Limau Kapas and Kubu sub-districts and the lowest is in the forest .Keywords: spatial model, land and forest fire risk index, Rokan Hilir district.
ANALISIS PENGEMBANGAN OBYEK WISATA PEMANDIAN ALAM KARANG ANYAR, KECAMATAN GUNUNG MALIGAS, KABUPATEN SIMALUNGUN, PROVINSI SUMATERA UTARA Novitasari Pardede; Muhdi Muhdi; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forest use is done by direct benefits (tangible) and indirect benefits (intangible). Indirect benefits (intangible) such as forest benefits in the form of immaterial or utilization of environmental services like nature which refers to the ecological principle can be used as an alternative to support long-term development of the country. One of the benefits that can be gained is the development of natural forest areas for ecotourism. This study aims to: (1) analyzing the potential attraction to attraction Nature Baths Karang Anyar; (2) to analyze the problems of nature tourism development strategy in the region SWOT attractions Nature Baths Karang Anyar. Sampling was done by purposive sampling techniques for the respondents and random techniques to the public. Objects and appeal that has been obtained and analyzed in accordance with the criteria in the Guidelines scoring Regional Operations Analysis Objects and Attractiveness Director General of Nature Protection and Nature Conservation in 2003 in accordance with a predetermined value for each criterion. Nature Baths Karang Anyar has potential natural attractions should be developed with a percentage of 73,88%. In the SWOT analysis, are in quadrant I, which indicates that this is a tourist area in a favorable situation. Keywords: Karang Anyar Nature Baths, Ecotourisme, development analisys, Gunung Maligas.
ANALISIS PENDAPATAN PETANI SILVOPASTURA DI DESA AMAN DAMAI, KECAMATAN SIRAPIT, KABUPATEN LANGKAT Sahroni Lubis; Siti Latifah; Tri Martial
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forest land use to agriculture recognized cause problems such as decreased soil fertility, erosion, extinction of flora and fauna, floods, droughts and even global environmental change. One land management system to tackle this problem is the model of agroforestry. Silvopastura management in the village of Aman Damai is still underdeveloped, and the lack of research related to land management system with silvopastura. Based on this, the study aims to identify the components of silvopastura, to know silvopastura practice contributes to the household income, and analyze factors that affect the income of silvopastura farmers in the Aman Damai of village. This research was done in May 2015. Sampling was done by purposive and methods used in the form of multiple linear regression analysis. The research showed that Component of silvopastura In Aman Damai village include component (wood plants) in the form of multipurpose tree species (MPTs) with the components of the farm (pasture). Multipurpose tree species that was developed is avocado, star fruit, durian, guava, citrus, cocoa, rubber, kuini, olive, mango, jackfruit, petai, Rambe, rambutan, and sapodilla. While the type of pasture being developed are chickens, goats, buffaloes, and cows. Silvopastura practices contribute to the household income of Rp. 397. 368. 000 (52.56%), greater than the contribution of farming to household income is Rp. 358.800.000 (47, 44%). The independent variables that significantly affect the dependent variable is a variable number of pasture and land ownership. Keywords : Farmers income, Silvopastoral, Multipurpose trees species (MPTS), Aman Damai Village.
ANALISIS BIOMASSA DAN CADANGAN KARBON BAMBU BELANGKE Sehat Martua Pasarbu; Siti Latifah; Muhdi Muhdi
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Bamboo is a group of plants that have the ability to absorb CO2 in high concentrations because having the number of stomata on bamboo leaves relatively tight and has are more than 500 stomata per mm2. Thus bamboo plant can be used as an effective bioakumulator which can reduce carbon emissions in the atmosphere. The purpose of this study was to determine the biomass content of bamboo, and                    (carbon stocks) in the public forests of bamboo and analyze the uptake of CO2 in bamboo plantations community forest Belangke (Gigantochloa pruriens Widjaja). The method used in this study is a destructive method. Sampling was done by purposive sampling felling. The results  showed the best allometric equations for mass content of the biomass and    carbon was  W = 173.889-533.233D+4.262D2 for biomass content and          C = 54.606-D-16.386+1.297D2 for carbon mass. The potential of biomass and carbon stocks in Forest Community Durin Serugun village, Sibolangit sub-district, Deli Serdang District is 16.59 tonnes / ha and 6.08 tons C / ha. Keywords: Biomass analisys, Carbon stock, Bambu belangke (Gigantochloa pruriens Widjaja), Community Forest, Desa Durin Serugun.
ANALISIS BIOMASSA DAN CADANGAN KARBON BAMBU TALI (Gigantochloa apus Kurz.) DI HUTAN RAKYAT DESA SIRPANG SIGODANG KECAMATAN PANEI, KABUPATEN SIMALUNGUN Sihol Marito Malau; Muhdi Muhdi; Irawati Azhar
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forests absorb CO2 during photosynthesis and store it as organic matter in biomass plants, as well as bamboo plantations. This study aimed  to : (1) analysis biomass and carbon stock (2) obtain a model Allometric estimation of carbon stocks in vegetation potential of oil palm plantations in North Sumatra; (3) obtain the potential carbon stocks in forest conversion to bamboo plantations in North Sumatra. This research was conducted in Forest Community Sirpang Sigodang Village, Subdistrict, Simalungun District. The research was carried out in two stages, namely the first stage were to data in the field and the second stage was analyze of carbon biomass and plant in the laboratory. Parameters measured in the field was wet weight, whereas in the laboratory is measured moisture content, volatile matter content, ash content and carbon content. Carbon plants in the plot were determined using allometric models bamboo carbon rods. Models the relationship between plant biomass or carbon rods with dimensions created with a method that describes the relationship Allometric biomass or carbon mass per plant as a function of the diameter. The results showed that the best model of allometric equations for estimating biomass and carbon mass of bamboo plantations was W= 81.324+22.411D+1.710D2 and C=45.979+12.792D+0.973D2 (W=biomass; C=carbon mass; D= diameter), resulting in biomass and carbon mass of tali bamboo plants respectively were 10.91 ton/ha and 5.49 ton C/ha. Keywords: Bambu tali (Gigantochloa apus Kurz)., Community Forest, biomass analisys, carbon stock, Sirpang Sigodang Village.
ANALISIS PERUBAHAN TUTUPAN LAHAN KOTA LUBUK PAKAM ANTARA TAHUN 2012 DENGAN 2015 Sugiatno Sugiatno; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The development of city and the increasing number of people has become a problem, especially the decreasing of forest city land caused by the construction and development process which have been done without considering the surrounding environment. This research aims to find out the changes of land cover in the district of Lubuk Pakam between  2012 and 2015. The Classification of land cover used Landsat 7 and Landsat imagery 8 OLI. The Classification of land cover was done using supervised classification and North Sumatera’s monogram. This research showed the change of land cover between 2012 and 2015. There are decrease of some areas which are 1,58% of are paddy field, 0,57% of dry land agriculture, 0,07% of shrub and 0,14% of bare land. But there is an increase of settlement areas which is 2,36% of the area. Keywords: Land Coverage Change, Lubuk Pakam City, Image Interpretation, Landsat Imagery.
POTENSI HASIL HUTAN NON KAYU KELOMPOK PALMAE BERBASIS SISTEM INFORMASI GEOGRAFIS (SIG) DI KECAMATAN LUMBAN JULU KPHL MODEL UNIT XIV TOBASA Tarida Olivia A Hutapea; Rahmawaty Rahmawaty; Irawati Azhar
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

As a family of Arecaceae generally Palmae is in the form of palm or shrubs. The purpose of this study was to identify and map the distribution of Non Wood Forest Production (NWFP) group palmae along with its standing in the utilization of the potential of NWFP by the community. Field data colected from March to May 2015. The method used is systematic sampling with ramdom start with 0.5% of sampling intensity. Mapping the distribution of use software ArcView GIS 3.3. Exploration results and the identification of palmae species from 19 ha of sample plots or 475 plots contained 707 palmae rod consisting of 2 sub-families and 7 species. The results showed that the most dominant species spreading is Hotang buar-buar (Calamus scipionum Loureiro) at an altitude of 1300 m above sea level and Bagot (Arenga pinnata) at 1400 m above sea level with IVI = 71,78%; and IVI = 113,75 %. The highest species diversity index value at an altitude of 1300 m above sea level 1,64. Keyword: KPHL Tobasa, HHNK, Palmae, GIS, Lumban Julu Sub Ditrict
ANALISIS PERUBAHAN GARIS PANTAI DAN TUTUPAN LAHAN PASCA TSUNAMI PANTAI LHOKNGA, KECAMATAN LHOKNGA, KABUPATEN ACEH BESAR Tia Novita Siregar; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This research describes coastline and land cover changes of Lhoknga beach after tsunami. This research used images satellite of Landsat 5 and Landsat 8. Image interpretation used supervised classification approach with the method of Maximum likelihood classifier. Image interpretation used visual analysis based on monogram North Sumatra. The research showed that coastline changes are caused by abrasion and accretion. Abrasion reduced the area of the beach 45,81 hectares in the period 2000 to 2013. Accretion increased the area of the beach 36,99 ha in the period 2000 to 2013. The largest land cover change between 2000 and 2005 were open land and bush.  The open land increased 716.95 ha and bush reduced 1.658,98 ha. The largest land cover changes in the period 2005 to 2013 were bush and forest. The bush increased 1.078,22 ha and forest reduced 823,01 ha. Key words: coastline change, land coverage, Aceh tsunami, Lhoknga Beach.
Analisis Biaya dan Produktivitas Produksi Kayu Pada Hutan Tanaman Industri (Studi Kasus: PT. Sumatera Riang Lestari-Blok I Sei Kebaro, Kabupaten Labuhanbatu Selatan dan Kabupaten Padang Lawas Utara) Warsein Roy M. Sitohang; Muhdi Muhdi; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Analysis of costs and productivity of timber production is done in PT. Sumatera Riang Lestari. This research was conducted since August 2014 until September 2014. The purpose of this research is to analyze the cost of harvesting that focus on the stages of harvesting, the division of the stem, stacking, stripping, extraction, loading and analyzing productivity and harvesting of timber in HTI PT. Sumatera Riang Lestari. The method of analysis in the sampling trees is done by purposive sampling. To analyze the cost of harvesting used calculation formulas fixed costs and variable costs (variable). To analyze the productivity of harvesting is done by calculating the productivity of timber extraction from the location of HTI to sawmills with conveyances (truck). Data in the calculation of costs and productivity of timber harvesting obtained by direct observationin the field. The research results showed that the cost of harvesting, fixed and variable costs (variable) used is IDR 288.243/hour and IDR 398.849,38/hour. Productivity harvesting of timber obtained in plantation forests (HTI) PT. Sumatera Riang Lestari is 314,80 m3/day. Keyword: Cost Analysis, harvesting productivity, Industrial Plantation Forest, PT. Sumatera Riang Lestari.
PERUBAHAN PENUTUPAN LAHAN HUTAN DI CAGAR ALAM DOLOK SIBUALBUALI TAHUN 2006 DENGAN 2013 Windy Sahraeni Batubara; Anita Zaitunah; Muhdi Muhdi
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Nature Reserve area Dolok Sibual-Buali government administratively located in the village Banyan, Marancar and Tapus, District Sipirok Batang Toru and Mulberry South Tapanuli. Conditions Nature Reserve is still intact and is a source of water for the surrounding area. The purpose of this study was to determine the changes in land cover and determine the condition land cover there in 2006 and 2013 by using the interpretation of Landsat ETM 7 and 8. Landsat TM image analysis and classification change detection method using Arcview Gis 3.3 and ERDAS IMAGINE 8.5. Image analysis were performed, land cover in the Nature Dolok Sibual-Buali classified into 5 classes of land cover namely primary dry forest, secondary dry forest, scrub, vacant land, water bodies and not identified (clouds and cloud shadows). The results obtained by the classification of the primary dry forest is 68.5 ha changed into a secondary dry forest and 11.8 ha to Body Air.Pada secondary dry forest area of ​​583.28 changes ha become better forest and 30.61 ha turned into Shrublands., 74 ha.Sedangkan on bushes changed into the body area of ​​3.42 ha of water. Keyword : Land coverage change, Dolok Sibualbuali Nature Reserve.

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