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All Journal Bumi Lestari Peronema Forestry Science Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Manajemen Pendidikan (JMP) Jurnal Purifikasi Tarbiyah Islamiyah: Jurnal Ilmiah Pendidikan Agama Islam
Muhdi Muhdi
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Energy Environmental Science Social Sciences Other

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Journal : Peronema Forestry Science Journal

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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 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.
MODEL ALOMETRIK BIOMASSA DAN MASSA KARBON BAMBU BELANGKE (Gigantochloa pruriens Widjaja.) DI HUTAN RAKYAT DESA SIRPANG SIGODANG, KECAMATAN PANEI, KABUPATEN SIMALUNGUN Yonri Situmorang; 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

Bamboo has a high carbondioxide absorption, but quantitively this ability of bamboo belangke (Gigantochloa pruriens Widjaja.) has not much known. This research was conducted in the area of forest community Sirpang Sigodang village, Panei Sub District, 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 biomass and carbon plant in the laboratory. Parameters measured in the field was wet weight, where as in the laboratory is measured moisture content, volatile matter content, ash content and carbon content. The results showed that the best model of alometric equations for estimating biomass and carbon of bamboo belangke (Gigantochloa pruriens Widjaja.) was W = 38.258-10.683D+0.854D2 and C = 14.994-4.139D+0.339D2. The potential of biomass and carbon contained in bamboo belangke (Gigantochloa pruriens Widjaja.) were 8.67 ton/ha and 4.05 ton C/ha. Keywords: Allometric Models, Babu belangke (Gigantochloa pruriens Widjaja), community forest, Sirpang Sigodang Viilage.
PENDUGAAN CADANGAN KARBON TUMBUHAN BAWAH PADA KEMIRINGAN LAHAN YANG BERBEDA DI HUTAN PENDIDIKAN UNIVERSITAS SUMATERA UTARA KABUPATEN KARO Sartika EC Siallagan; Muhdi Muhdi; Diana Sofia Hanafiah
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The purpose of this study were to determine the potential of carbon on under storey level and to determine the effect of slope on a large or small carbon stocks in understorey in education forest University of North Sumatera District Karo. The research was conducted in April 2015. Data was collected by using purposive sampling with random start. Plot size is 20m x 20m as 6 plots with 3 plots in area ramps and 3 plots in steep terrain. Data were collected by destructive methods. The results showed that 14 species are found under the ramps region and 12 species on the steep region. Potential carbon found in the ramps region that is equal to       93,08 kg/ha and the potential of the carbon contained in the steep region that is equal to 83,84 kg/ha. The carbon in the ramps region is larger than in the steep region. Keywords: carbon, understorey, ramps region, steep region, education forest University of North Sumatera
Pengaruh Struktur dan Komposisi Tegakan Terhadap Cadangan Karbon Tumbuhan Bawah di Hutan Desa Simorangkir Julu, Kabupaten Tapanuli Utara Indra Alexander Saragih; Muhdi Muhdi; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The utilization of forest which not offset by maintenance and care efforts will lead to the destruction of forests so that increase carbon levels in atmosphere. All components of the vegetation either trees, shrubs, lianas and epiphytes, groundcovers are carbon sink. However, the growth of groundcover very strongly influenced by the structure and composition of stands. Measurements of carbon groundcover in this village forest needs to determine the value of the importance of forests to be carbon sink as part of efforts to mitigate climate change in the North Tapanuli District. The purpose of this research was to analyze stand structure and composition and calculate groundcover carbon stocks in forest of Simorangkir Julu Village. Object of this research is the stand and groundcover in the forest of Simorangkir Julu Village. The method used is analysis of vegetation  at the stands and groundcovers. Destructive sampling method were used to harvest groundcover in 2 m x 2 m sample plots for carbon analyze. Then, followed by analysis of effect the structure and composition stands to groundcover carbon.  The results of this research indicate that there were 26 species of groundcover. Carbon stock of groundcover in salagundi stand is 4.93 tonnes/ ha, and in pine stand 4.88 tonnes/ ha. Based on  statistical analysis of carbon stocks groundcover in pine stands and Salagundi stands not significantly different. Carbon  stocks  are  more   influenced  by  the  diversity  and  density of groundcover, soil type, and environmental condition.Keywords: species, groundcover, stand, carbon
PENDUGAAN CADANGAN KARBON PADA TEGAKAN EUCALYPTUS IND 47 UMUR 5 TAHUN DI IUPHHK PT.TOBA PULP LESTARI, Tbk. SEKTOR TELE Ansencia Manullang; Muhdi Muhdi; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forest can reduce levels of carbondioxide (CO2) in the air and store it as organic matter in biomass plants. This research aimed to estimate the potential of biomass and carbon of Eucalyptus IND 47 that was  5 years old at IUPHHK PT. Toba Pulp Lestari, Tbk. Tele Sector. The method used in this study is a destructive method. Implementation of research activities carried out in two stages, namely field data collection and analyze biomass and carbon of the parts of stands in laboratory. Parameter measured in the field is wet weight while the measured parameter in laboratory were moisture content, volatile matter content, ash content, and carbon content. The result showed the best allometric equations for mass content of biomass and carbon in stands of Eucalyptus IND 47  was W = 454.419 – 45.528D + 1.886D2 and C = 220.979 – 23.389D + 1.004D2.. The potential of biomass and carbon stocks in stands of Eucalyptus IND 47  at IUPHHK PT. Toba Pulp Lestari, Tbk. Tele Sector is 243.18 tons/ha  and 118.89 C tons/ha. Keywords : 5 years old of Eucalyptus IND 47, biomass, carbon
Co-Authors Anita Zaitunah Ansencia Manullang Ardiansyah Putra Diana Sofia Hanafiah Eva Sartini Bayu Evan Satria Saragih Fajridyah Handayani Frans R Sipayung Ghufron Abdullah Ghufron Adbdullah Hafizah Arinah Heru Frianto Simanjuntak Immanuel Sihaloho Indra Alexander Saragih Irawati AZHAR Iwan Risnasari Johanna Philip Siagian Kansih Sri Hartini Novitasari Pardede NUR KHAYATUN Retnaningdyastuti Retnaningdyastuti Rhisty Frida Utami Ridwanti Batubara Rita Haryaningrum Sartika EC Siallagan Sehat Martua Pasarbu Septborn Winner Simamora Sihol Marito Malau SITI LATIFAH Soegito Soegito Warsein Roy M. Sitohang Windy Sahraeni Batubara Yoga Yuniadi Yonri Situmorang Yunus Afifuddin