Judul: Estimation of Carbon Mass Potency of Plant Fiber Wood In The Peat Land (Case Study In Areal HTI Fiber Wood PT RAPP Sector of Pelalawan, Riau Province)
Abstrak: The role of forests as carbon sinks and storage is very important in the prevention of the greenhouse effect that leads to global warming. Among the various types of forest, peat forest serves as the largest carbon storage. The research objectives were to obtain an alometric equation of carbon mass for A. crassicarpa tree, and measure the potential carbon mass of A. crassicarpa trees on the peat land of HTI fiber wood as well as the potential of carbon mass in peat soil. The results showed that the potential biomass in the stand of A. crassicarpa for the age groups of 2,3,4 and 5 years was respectively 44.98 tons/ha, 70.35 tons/ha, 134.05 tons/ha and 234.78 tons/ha. The potential carbon mass in the stand of A. crassicarpa trees for the age group of 2,3,4 and 5 years was respectively 12.09 tons/ha, 36.23 tons/ ha, 76.09 tons/ha and 133.10 tons/ha. The best alometric equation for estimating tree biomass is W = 0.398918D2.041Hbc0.165 and for carbon mass is C = 0.131D1.246 Htot1.175 .The potential carbon mass of harvest waste on average was 4.89 tons/ha or 3.67% of the potential carbon mass of the tree before harvesting. The potential carbon mass of understorey for the age group of 2,3,4,5 and 0 years was respectively 0.86 tons/ha, 1.27 ton/ha, 1.50 tons/ha, 2.31 tons/ha, and 0.27 tons/ha. The potential carbon mass of litter for the age group of 2,3,4,5 and 0 years was respectively 1.64 tons/ha, 1.54 tons/ha, 2.06 tons/ha, 2.72 tons/ha and 0.32 tons/ha. The potential carbon mass of peat soil for the age group of 2,3,4,5 and 0 years was respectively 1394.07 tons/ha, 1339.14 tons/ha, 1271.11 tons/ha, 1262.68 tons/ha and 1473.62 tons/ha. The potential carbon mass on the ground stand of A. crassicarpa was 3.89% of the potential carbon mass in peat soils.
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Judul: Model Persamaan Alometrik Penduga Biomassa dan Masa Karbon Pohon Di Hutan Alam Tropika Basah (Studi Kasus Di ArealIUPHHK-HA PT Suka Jaya Makmur, Kalimantan Barat)
Abstrak: Global warming is one of green house effect phenomena which cause by increasing the concentrations of greenhouse gases (GHG) emissions in the atmosphere, such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC), and sulfur hexafluoride (SF6). Forests can absorb CO2 from the air and store in the trees. Tropical natural moist forest is one of the forest types, which can absorb CO2 very well so it has quite high potential carbon stock. This studies was conducted in IUPHHK-HA PT Suka Jaya Makmur, West Kalimantan. The main goal of this study is to get tree biomass and carbon allometric equations of tropical natural moist forest in IUPHHK- HA PT Suka Jaya Makmur. Sampling conducted by purposive sampling. Laboratory analysis of sample materials were done in the Laboratory of wood chemistry, Department of Forest Product, Faculty of Forestry to determine the carbon content in each part of the tree. The best equations was selected based on the highest R2(adj) and the smallest standard deviation (s) value. Estimation of biomass and carbon mass were done on roots, stems, branches, twigs, and leaves of the tree. The results of this study indicate that the carbon content of every part of the trees (roots, main stems, branches, twigs and leaves) are very significant difference. Allometric equations for tree biomass was selected Btot=0.2729D2.53Tbc-0.332, and model allometric equations to estimate potential carbon Ctot=0.1503D2.57Tbc-0.357. The potential of biomass and carbon mass location of each study is 68.35 ton/ha and 41.69 ton/ha.
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Judul: Trichomonas Gallinae Penyebab Trichomonosis Pada Unggas
Abstrak: Trichomonas gallinae adalah protozoa yang bergerak aktof dengan keempat flagella yang mempunyai layar dan pada salah satu sisinya terdapat membran seperti sirip ikan yang berombak. Spesies dari genus Trichomonas ini mempunyai arti penting pada unggas, karena dapat menyebabkan infeksi pada alat pencernaan bagian atas.
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