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All Journal Bumi Lestari Peronema Forestry Science Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Manajemen Pendidikan (JMP) EDUCATIO : Journal of Education 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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PENDUGAAN CADANGAN BIOMASSA DI ATAS PERMUKAAN TANAH PERKEBUNAN KELAPA SAWIT DI SUMATERA UTARA Muhdi Muhdi; Iwan Risnasari; Eva Sartini Bayu
Bumi Lestari Journal of Environment Vol 15 No 1 (2015)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The objective of the research was to find the model of above ground biomass in the oil palmplantation, North Sumatera. The research was done at the oil palm plantation, North Sumatera. Theeffect of oil palm plantation to biomass stock in the plots were studied by using the data ofthree plots with each size 100 m x 100 m. The plots are placed based on purposive sampling.Above ground biomass stocks are counted by allometric equation. The results of the researchshowed that allometric equation of oil palm trees was W = 0,003 D. The result  showed thatabove ground biomass of oil palm plantation in the North Sumatera were 64.20 Mg ha
Struktur dan Komposisi Jenis Tegakan Semai dan Pancang di Hutan Alam Akibat Pemanenan Kayu dengan Teknik Reduced Impact Timber Harvesting Diana Sofia Hanafiah; Muhdi Muhdi
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 2 (2010): June 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v15i2.2695

Abstract

The effect of reduced impact timber harvesting technique to structure and species composition of seedling and poles was studied using the data of three plots each sized 100 m x 100 m, which are placed randomly at landing, middle skiddtrail and tips of skiddtrail, respectively. The aim of the study was to know the effect of reduced impact timber harvesting technique to structure and species composition of seedling and poles in tropical forest. The research showed that the forest harvesting caused the changing of the structure and species composition of seedling and poles in natural tropical forest.
Analisis Pengembangan Objek Wisata Pemandian Manigom di Kabupaten Simalungun Heru Frianto Simanjuntak; Siti Latifah; Muhdi Muhdi
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Pemandian Manigom ecotourism is a target destination in Simalungun. Management of Pemandian Manigom ecotourism not optimal so that this attraction is rarely visited by tourists. This study aimed to analyze potency of the development, problems and the development srategy of Pemandian Manigom ecotourism. The potential object  of Pemandian Manigom region are flora and fauna, very beautiful natural scenery, path tracking, and camping ground area. This ecotourism has appeal, accessibility, accommodation, facilities, and infrastructure with percentage of the egibility rate was 93,92%. In the SWOT analysis, Pemandian Manigom ecotourism are a very favorable situation which quadrant I that it has the power and more opportunities and can cover the weaknesses and threats in the development of attraction it.Keyword: Ecotourism, Pemandian Manigom, evaluation, SWOT analysis
MODIFIKASI TEKNIK PEMANENAN DENGAN PERLAKUAN FISIK DALAM UPAYA PENINGKATAN PRODUKTIVITAS GETAH KEMENYAN TOBA (Styrax sumatrana) Septborn Winner Simamora; Muhdi Muhdi; Ridwanti Batubara
Peronema Forestry Science Journal Vol 4, No 1 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Styrax sumatrana is one of the flagship plant in North Sumatra which has enough potential to be developed. The research was to know frankincense sap productivity Toba (S. sumatrana) with the modification of the physical treatment by being hit and treated with aluminum foil and closed with a combination of both. Making scractch is done by maked cuts in the skin in a vertical line with a length of 2-3 cm with a depth (depending on the thickness of the skin) to the wood. The results showed that treatment with a physical beating and beating and closure combination significantly different physical treatment, closure, while the physical treatment with a combination of beating and beating and closing were not significantly different. The best in productivity of Styrax sumatrana  is beating and combination, the value is 437,82 g/tree/year.Keywords: Styrax sumatrana, sap, modified harvesting techniques, physical treatment
ANALISIS PERUBAHAN TUTUPAN VEGETASI BERDASARKAN NILAI NDVI DAN FAKTOR BIOFISIK LAHAN DI CAGAR ALAM DOLOK SIBUAL-BUALI Ardiansyah Putra; Anita Zaitunah; Muhdi Muhdi
Peronema Forestry Science Journal Vol 5, No 1 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The absence of information about the level of change in vegetation index (NDVI) of forest land in the Nature Reserve Dolok Sibual-Buali is unclear. The decrease of NDVI would be related to forest damage. Forest damage will impact on the decrease of forest functions, especially its function as regulator of water management, flood prevention, erosion and carbon sequestration. This research was conducted in Nature Reserve Dolok Sibual-buali in May-September 2009 using Geographic Information System (GIS), Remote Sensing (RS) and Global Positioning System (GPS), which are three very useful spatial technology. Spatial analysis was done by overlaying several spatial data (parameters determining forest damage vulnerability level) to produce a new mapping units (land units) which will be used as the unit of analysis. The results showed regional nature reserve area Dolok Sibual-Buali is well preserved with class area from 0.4 to 0.8 (tropical rain forest) amounted to 4049.71 hectares, an increase of 32.15% vegetation cover to the class from 0.4 to 0.8 (tropical rain forest) in the nature reserve area Dolok Sibual-buali. Based on the analysis, nature reserve area Dolok Sibual-buali well preserved becausedof biophysical conditions taht forest cover which is at a high altitude with a moderate to steep slopes and quite far from the road and also does not have a big river. Causing difficulty of access into the area and also the absense of conveyace of natural wood. Keywords: GIS, RS, NDVI, Vegetation Coverage Change, overlays, Dolok Sibual-buali Nature Reserve
Pendugaan Cadangan Karbon Pada Tanaman Karet (Hevea brasiliensis Muell. Arg.) Umur 10 Tahun di Perkebunan Rakyat Desa Tarean, Kecamatan Silindak, Kabupaten Serdang Bedagai Evan Satria Saragih; Muhdi Muhdi; Diana Sofia Hanafiah
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The rate of change in forest area into plantations tend to be greatly improved from year to year. As a result of forest land will be increasingly threatened its existence as it is converted to plantations. For that to know how the ratio of the absorption of CO2 by growers compared with forests. The purpose of this research were to know the carbon content in each section rubber tree (Hevea brasiliensis Muell. Arg.) and to determine the potential of carbon reserves in the rubber tree (Hevea brasiliensis Muell. Arg.) age of 10 years in people plantation Serdang Bedagai. The method of estimaty carbon stocks  had done destructive ends. Selection of plant samples carried out with purposive sampling. The best equation for estimating biomass and carbon selected using allometric equations based on the value of the highest R-Sq and practicality aspect. The results showed that allometric models for biomass and carbon wasW=3.42 DBH1.153 and  C = 0.58 DBH 1,586 respectively. The potential of biomass and carbon in smallholder rubber plantations Tarean Village, District Silindak, Serdang Bedagai were 40.54 tons / ha and 20.58 tons C/ ha ,respectively. Keywords: rubber, Carbon stocks, biomass, allometric models
PENDUGAAN CADANGAN KARBON PADA TANAMAN KARET (Hevea brasiliensis Muell. Arg.) DI PERKEBUNAN RAKYAT DESA TAREAN KECAMATAN SILINDAK, KABUPATEN SERDANG BEDAGAI Frans R Sipayung; Muhdi Muhdi; Diana Sofia Hanafiah
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Global warming is causing an increase in temperature of the earth's atmosphere, climate change, resulting in the dry season and rising temperatures. Efforts to control global warming is with the plant the absorption of carbon. One of which is rubber plant that has a high potential carbon reserve. The purpose of this research want to know the carbon content in each section rubber tree (Hevea brasiliensis Muell. Arg.) and determine the potential of carbon reserves in the rubber tree (Hevea brasiliensis Muell. Arg.) Age of 5 years in people plantation Serdang Bedagai. The method of estimaty carbon stocks done destructive and selection of plant samples carried out with purposive sampling. The carbon content in each section rubber trees (Hevea brasiliensis Muell. Arg.) 5 years of age is different is stem 50.37%, 40.58% branches and leaves 21.68%. The results showed that allometric models for biomass and carbon has W = 3.425 DBH1.153 and C = 0.582 DBH 1.586 , respectively. The potential of biomass and carbon in smallholder rubber plantations Tarean Village, District Silindak, Serdang Bedagai were 2.71 tons / ha and 1.18 tons C / ha, respectively. Keywords: Karet (Hevea brasiliensis Muell. Arg), carbon stocks, biomass measurement, allometric models.
PENDUGAAN CADANGAN KARBON PADA TANAMAN BAMBU TALANG (Schizostachyum brachycladum Kurz.) DI HUTAN RAKYAT BAMBU DESA PERTUMBUKAN KECAMATAN WAMPU KABUPATEN LANGKAT Hafizah Arinah; 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

The Chlorophyll vegetation is able to absorb CO2 from the atmosphere through photosynthesis, as well as the bamboo talang does. The purpose of this research was to account the carbon content in each section of bamboo talang (Schizostachyum brachycladum kurz.) and to determine the best allometric model to estimate the potential of carbon reserves in the bamboo talang in harvested-over areas in people forest bamboo, Village Pertumbukan. The research was carried out in two stages, namely the first stage was to take the data in the field and the second stage was to analyze the carbon content in each section of bamboo talang in the laboratory. The results showed that the best allometric model for estimating biomass and carbon mass of bamboo talang was W = 44.614-14.047D+1.26D2 and C = 20.159-6.390D+0.585D2. Biomass and carbon mass off bamboo talang in People Forest Bamboo Pertumbukan Village, District Wampu, Langkat were 5.85 ton/ha and 2.82 ton C/ha, respectively. Keywords: Bambu talang (Schizostachyum brachycladum Kurz)., community forest, carbon stock, allometric models
PENDUGAAN CADANGAN KARBON TUMBUHAN BAWAH PADA TEGAKAN MINDI (Melia azedarach) DAN MAHONI (Swietenia macrophylla) Immanuel Sihaloho; Muhdi Muhdi; Siti Latifah
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Measurement of carbon stock is very important to know how much carbon that can be absorbed by plants. Object of this research was the understorey on stands Mindi (Melia azedarach) and Mahoni (Swietenia macrophylla). The method of measurement used is the destructive sampling method that is the way to harvest the entire understorey which is at 1m x 1m sample plots.  The results of this study indicate that the type of stands under the influence of the composition of the existing understorey under the stand so that the carbon content in the understorey was different. The average of carbon understorey on the second stands is 1.08 tons/ ha. Keywords: understorey, Mindi (Melia azedarach) Mahoni (Swietenia macrophylla), carbon stock.
ANALISIS EKONOMI PADA KAWASAN KONSERVASI EKS-SITU TAMAN HEWAN PEMATANG SIANTAR Johanna Philip Siagian; 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

Ex-situ conservation is the preservation of plant species and wildlife are carried out outside the habitat. Animal park Pematangsiantar is one of conservation organizations in North Sumatra, which is engaged in the utilization of fauna to maintain the continuity of existing species therein. This study aimed to: (1) analyze the economic value of conservation areas Animal Park Pematangsiantar (THPS) based on the travel cost method, (2) analyzing the intensity of the visit in THPS, (3) analyze the factors that affect the intensity of visits to THPS. The samples used in this study was 100 respondents, while the sampling technique used was purposive sampling.  Based on the result of the analysis carried out that the quantity of the economic value of conservation areas THPS with travel cost method was Rp41.534.982.240,-/year. THPS is the intensity of visits to as many as three visits, whereas the factors that affect the intensity of the visit is the length of journey. Keywords: ex-situ conservation, Pematangsiantar Animal Park, economic value, travel cost method, visitation intensity
Co-Authors Anita Zaitunah Ansencia Manullang Anwar Hafidzi 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 Lutfi Lutfi M. Ramli Novitasari Pardede NUR KHAYATUN Rahmat Sholihin 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