Judul: Persamaan Alometrik Biomassa dan Massa Karbon Pohon Jati (Tectona grandis Linn. f.) (KPH Balapulang, Perum Perhutani Unit I, Jawa Tengah).
Abstrak: The forest contribute to reduce greenhouse gases (GHG) that become trigger global climate change by binding the CO2 gas in the atmosphere. In the climate change convention entitled Conference of the Parties held in 1997, Kyoto Protocol was declared. One of the contents of this protocol is used by the developed countries as the basis to finance low-pollution project in developing countries. Calculating the forest carbon mass using allometric equations of biomasss and carbon mass is still rarely done, therefore the research is needed to gain further information. The Teak tree (Tectona grandis Linn. f.) is known as a high-quality commercial wood and it is widely planted in Java Island. This research was conducted at KPH Balapulang, Perum Perhutani’s Unit I, Central Java. The objective of this research is to get allometric equation of biomass and carbon mass for Teak tree (Tectona grandis Linn. f.). Selection of sample trees in each age class was conducted by purposive sampling, ranging from age class 1 to age class 5. Laboratory test were conducted to determine the carbon content in each part of the tree. Best equation was selected conducted using allometric regression based on the highest R2(adj), (real level) p <0,05, Fcount > Ftable and smallest standard deviation (s). The results of the this study showed the differences of the carbon content in various parts of the tree (trunk, branches, twigs, leaves, and roots). Allometric equations selected for biomass Teak tree (Tectona grandis Linn. f.) is B = 0,1383 D2,45 and allometric equation selected for Teak tree carbon mass is M = 0,0933 D2,44.
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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: 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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