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: Persamaan Alometrik Biomassa dan Massa Karbon Akar Pohon Hutan Alam Tropika di Areal IUPHHK-HA PT. Suka Jaya Makmur, Kabupaten Ketapang, Provinsi Kalimantan Barat.
Abstrak: Main factor which is considered of global warming is increasing concertration of greenhouse gases (GHG) emissions in the atmosphere. Plants have the ability to absorb CO2 from the atmosphere into useful energy through the process of photosynthesis. This process produces the O2 and energy, and some of the energy stored in the form of biomass. Natural tropical forest is one of the forest type that can absorb CO2 well, so its potential to savings carbon. The goal of this research is to get the allometric equation and tree roots of biomass and carbon mass of natural tropical forest in IUPHHK-HA PT Suka Jaya Makmur areas. Selection of sample trees on each class has been done by a purposive sampling and carbon content analysis of sample materials are conducted in the laboratory of wood chemistry in the totally of forestry, IPB. The best equation of allometric was selected based on the highest R2(adj) and the smallest standard deviation (s). Allometric equation model of tree roots biomass allometric relationship with root diameter, trees highest, and biomass of roots of the tree above the ground are as follows : BA = 0,0162 D2,55, BA = 0,0398 D3,39 T-1,24, BA = 0,1510 BB1,14, BA = 0,9397 BC1,10, BA = 2,5351 BD1,11, BA = 0,0691 BT1,14. Allometric equation model of tree roots carbon mass with diameter, tree height and with carbon mass of tree above ground are as follows : CA = 0,0089 D2,58, CA = 0,0229 D3,47 T-1,31, C = 0,1545 CB1,08, CA = 0,9440 CC1,12, CA = 2,5704 CD1,14, CA = 0,0741 CT1,14. T-student test results of tree roots carbon mass equations of tree roots carbon mass with the mass carbon of parts of the tree above the ground, and equations of tree roots carbon mass with diameter and height of the tree, shows that the results are not different.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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