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POTENSI PEREKAT TANIN FENOL FORMALDEHIDA KULIT KAYU MANGIUM (Potency of Tannin Formaldehyde Adhesive from Acacia mangium Bark): Gimson Luhan Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTBark waste of Acacia mangium could to produce the tannin formaldehyde adhesive that useful as material to the wood working industrial. These material are produced from timber estate of Acacia mangium that widely planted in Sumatera and Kalimantan, and also in the other place, because this species is the fast growing species and relatively easy to grow at the marginal site. Acacia mangium bark was predicted 10% of the logs. The study was aimed to determine the quantity of tannin formaldehyde from Acacia mangium bark that could be developed for the adhesive. The study showed that potency of tannins phenol formaldehyde adhesive namely 435.302,35 ton per year. This materials were able to produce the glue namely 1.691,69 million sheets of plywood approximately. Keywords: Adhesive tannin, bark waste of Acacia mangium, glue

VARIASI BERAT JENIS GELAM BERDASARKAN LOKASI TUMBUH DAN TINGKAT PERTUMBUHAN (Specific Gravity Variation of Melaleuca sp. According Its Site Location and Growth Level): Alpian, Wahyu Supriyati, M. Damiri, Christopheros Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTGelam (Melaleuca sp.) mostly grew at the degraded peat-swamp forest. This study investigated the specific gravity of gelam based on two factors, i.e. site location and growth level. Site location was divided into two sub factors of peat thickness namely 51 to 100 cm (l1) and 101 to 200 cm (l2). Growth level was divided into four stages namely seedling, sapling, poles, and tree. Research result show that specific gravity of gelam wood (dry-air and dry-kiln) at the l2 was bigger than l1. Specific gravity of gelam wood (dry-air and dry-kiln) based on the growth level at the location 1 and location 2 show the same pattern, namely the level of tree > pole > sapling > seedling. The interaction between location versus growth level are no significant different on the specific gravity of the gelam wood, and it is start from 0.55 to 0.77 or at the medium category.Keywords: Gelam, growth level, site location, specific gravity

ESTIMASI CADANGAN KARBON DI ATAS PERMUKAAN PADA HUTAN DESA BUNTOI KABUPATEN PULANG PISAU KALIMANTAN TENGAH (Above-Ground Carbon Pool Estimation at the Buntoi Village, Pulang Pisau District, Central Kalimantan Province): Yusuf Aguswan Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTVillage forest program is one of the breakthroughs of the Ministry of Forestry for community-based forest management. In order to manage the village forest, needing the data and information about the biomassa at the site. The research was aimed to estimate the above-ground carbon pool at the Buntoi Village Forest that located at the protection forest in the form of deep peat areas. This site is administratively located at the Pulang Pisau District, Central Kalimantan Province. Research result showed that above-ground carbon pool at the peat-swamp scrub of Buntoi Village Forest is predictively namely 16.510 ton, whereas above-ground carbon pool at peat-swamp secondary forest of Buntoi Village Forest is predictively namely 176.059 ton. These data are lower than Central Kalimantan REL standard, with the result the Buntoi Village Forest is suitable for carbon trade purpose at the future.Keywords: Buntoi, carbon pool, peat-swamp areas, village forest

PEMANFAATAN LIMBAH KAYU MERANTI RAWA (Shorea balangeran) UNTUK PEMBUATAN PAPAN PARTIKEL BERLAPIS ANYAMAN ROTAN (Utilizing Waste of Shorea balangeran Wood to Particle Board with Woven Rattan-Coated): Sarinah, D. Natalia Koroh, Grace Siska Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTMeranti (Shorea balangeran) is one of some species that grow well at peat swamp forest. Wood of meranti useful to furniture, kosen (window or door frame), board etc. Unfortunately, the waste of its wood processing is low valuable. Therefore, utilizing waste of meranti to particle board is the good idea. In order to strengthen the particle board, it could be coated by braided rattan. This research was aimed to determine the physical and mechanical properties of particle board that made from waste of meranti, using PVAc adhesive and coated by woven rattan. The research was conducted to campare particle board without woven rattan-coated (a1) and using woven rattan-coated (a2) with 20%, 30%, and 40% of adhesive level respectively. Research result show that using adhesive with level of 40% is better than 20% and 30% in the form of physical and mechanical properties and suitable with JIS 5908:2003 standard.Keywords : particle board, waste, physical and mechanical properties

ANALISIS KELAYAKAN USAHA BUDIDAYA GAHARU, STUDI KASUS DI KABUPATEN PULANG PISAU PROVINSI KALIMANTAN TENGAH (Feasibility Analysis of Gaharu. Case Study at Pulang Pisau District, Central Kalimantan Province): Herna Widyarini1), Wahyudi2), Renhart Jemi2 Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTGaharu is non timber forest product in the form of the rotted xylem of which yields fragrant resinous material that produced from gaharu trees or tree eaglewood as Aquilaria spp. Gaharu trees are suitable planted at the degraded peat-swamp forest that widely contained at the Central Kalimantan Province. This research was aimed to analyze the feasibility of gaharu planted at the peat-swamp forest in Jabiren Raya sub District, Pulang Pisau District, Central Kalimantan Province. The research was conducted at the gaharu (Aquilaria malaccensis) plantation aged 1 to 6 years old. Inoculation of stems and harvesting were done at the moment aged 5 and 6 years old respectively. Data analysis using NPV, BCR, and IRR with the assumption using internl and external fund at the 7.5%, 7.75%, and 12% of rate. Research result showed that gaharu cultivation is feasible with NPV, BCR, and IRR namely IDR 92.51 mill, 1.34, and 0.1686 respectively at the 7.5% of rate. At the rate of 7.75%, NPV, BCR, and IRR namely IDR 89.07 mill, 1.33, and 0.1686 respectively, and at the rate of 12%, NPV, BCR, and IRR namely IDR 40.46 mill, 1.17, and 0.1686 respectively. The value of IRR showed that gaharu cultivation is feasible conducted at the rate under 16.86%.Keywords: external and internal fund, feasibility,gaharu

KUALITAS KAYU LAPIS DARI DARI KOMBINASI KAYU AKASIA (Acacia auriculiformis) DAN SUNGKAI (Peronema canescens) (Plywood Quality from Acacia auriculiformis and Peronema canescens timbers): Sushardi Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTIn order to increase plywood production in Indonesia, utilization the timbers coming from forest community is very important. Some species that widely planted at the forest community in DI Yogyakarta are akacia (Acacia auriculiformis) and sungkai (Peronema canescens). This research was aimed to know the combination some veneers formed of acacia timber and sungkai timber with the urea formaldehide resurfaced adhesive to producing the high quality plywood. The combination treatments were veneers from acacia timber (S1), veneer from sungkai timber (S2), veneer-core from acacia timber and veneer – face – back from sungkai timber (S3), and veneer-core from sungkai timber and veneer – face – back from akasia timber (S4). The experiment used complete randomized design with the further test using Tukey procedure in processing data. The research result showed that the treatment of veneer-core from acacia timber, and veneer-face-back from sungkai timber with the 60 #/MSGGL resurfaced adhesive have the better physical and mechanical property than the other treatments. Despitefully, sungkai timber has more decorative wood and a high commercial value.Keywords: Acacia, plywood, sungkai, veneer

VARIABILITAS KUALITAS KAYU MAHANG (Macaranga hypoleuca) DARI KALIMANTAN TENGAH (Variability of Macaranga hypoleuca Timber Quality From Central Kalimantan): M. Damiri dan Yanciluk Admin JHT
Jurnal Hutan Tropika Vol 10 No 1 (2015): Volume 10 Nomor 1 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTMahang (Macaranga hypoleuca) is one of some lesser know species that widely grow at the secondary forest, especially in Central Kalimantan. This research was aimed to determine the properties of mahang timber quality and the relationship between axial and radial position concerning its properties. Research method using the factorial complete random design (CRD) 3 x 2. The first factor is the axial wood position (a) consist of the bottom (a1), the middle (a2), and the top (a3). The second factor is radial position (b) consist of axial (b1), and radial (b2). Data analysis using honestly significant difference (HSD). The wood’s water content test using ISO 3130 – 1975 (E) standart, the wood density test using ISO 3131 – 1975 (E) standart, and the wood shrinkage test using ISO/DIS 4469. The cell proportion test using grid mask method of Image Pro Plus V 4.5 program, whereas its dimension test using Image Pro Plus V 4.5 program. The wood extractive content test using ASTM D.2016-65, (ASTM D.1107-56), and (ASTM D.1110-56) procedures. Research result showed that wet vapor is 44.43%, dry vapor is 13.46%, specific gravity is 0.36, and the shrinkage TR ratio is 1.76. About fiber dimension: the fiber length is 1.6 mm, fiber diameter is 18.5µ, lumen diameter is 15.2 µ and thick of cell wall is 3.3 µ. The proportion of wood cell: spokes cell is 10.5%, parenkim is 11.3%, vessel cell is 16.5% and fiber is 62.1%. There is a relationship between several adhessiveness characteristics and wood quality toward the influences of the mahang wood’s actial and radial positions.Keywords: axial, Macaranga hypoleuca, radial, wood quality

STRUKTUR, KOMPOSISI DAN PERTUMBUHAN PERMUDAAN ENDEMIK RAWA GAMBUT PADA LAHAN BEKAS KEBAKARAN DI STASIUN PENELITIAN ORANGUTAN TUANAN, KALIMANTAN TENGAH: Yudha1 dan Sri Suci Utami Atmoko 2 Admin JHT
HUTAN TROPIKA Vol 13 No 1 (2018): Volume 13 Nomor 1 Tahun 2018
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTThe aims of this study were to determine the composition, structure, and growth of endemicspecies of peat swamps in the areas of ex-burned, burned border, and non-burning areas; alsomeasured the growth of endemic seedlings in the burned area at the Orangutan Research Stationof Tuanan (SPOT); and also to know the type of orangutans feed tree in the Orangutan ResearchStation of Tuanan (SPOT). The location of this research is conducted in the area of ResearchStation of Orangutan Tuanan of Central Kalimantan Province on the ex-burned field, with theresearch period was 4 (four) months. The results showed that vegetation composition andstructure were dominated by plant species of Tutup Kabali (Diospyros pseudo-malabarica),Kayu Randa (Gardenia cf. Pterocalyx), Kumpang Daun Perak (Gymnacranthera sp.), ManggisHutan Daun Besar(Garcinia cf. Beccarii, Keput Bajuku (Stemonurus scorpioides, Tarantang(Campnosperma coriaceum), Karandau (Neoscortechinia sp.) dan Rambangun (Acronychiapedunculata).Based on the value of species diversity in the transect of SG and HR was lowmoderate and in transect SA and IS diversity was moderate-high. The fastest growth in SGtransect, where the average growth rate was 12.8 cm and 0.1 cm in diameter; whereas in the IStransect the growth was low, where the average growth rate was 1.5 cm and diameter 0.04 cm.Several dominant species of Orangutan feed plants in the research plots are Tutup Kabali(Diospyros pseudo-malabarica), Jelutung (Dyera polyphylla), Rambangun (Acronychiapedunculata), Bajuku Keput (Stemonurus scorpioides), Manggis Hutan Daun Besar (Garcinia cf.Beccari), Tarantang (Campnosperma coriaceum).Keywords: Composition, structure, growth, fire, orangutan feed.

KUALITAS KAYU SUNGKAI (Peronema canescens) DAN SENGON (Paraserianthes falcataria) PADA HUTAN RAKYAT DI KABUPATEN TABALONG KALIMANTAN SELATAN (Wood Quality of Peronema canescencs and Paraserianthes falcataria in the Community Forest of Tabalong, South Kali: Wahyudi, M. Damiri, Christopheros, Pahawang Admin JHT
HUTAN TROPIKA Vol 13 No 1 (2018): Volume 13 Nomor 1 Tahun 2018
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTCommunity forest has a big value to be developed in the scrubs and degraded land thatgone the round of land in Indonesia. Developing community forest is able to increase product ofdomestic wood, moreover, community forest also can improve social earnings. This research wasaimed to know the history of community forest using species of Peronema canescens andParaserianthes falcataria in Tabalong District, South Kalimantan Province and also to knowexpectation and constraint met. The result of this research indicates that density of plans are lowand mixed with other plant. The densities of sengon and sungkai area are 158 trees/ha and 132trees/ha, respectively. Stem quality of Peronema canescens and Paraserianthes falcataria isstill low. Empowerment and construction in order to develop the community forest are veryimportant to be done.Keywords : Community forest, Peronema canescens, Paraserianthes falcataria

KUALITAS PAPAN PARTIKEL DARI LIMBAH GERGAJIAN KAYU BANGKIRAI (Shorea laevis Ridl) (Quality of Particle Board From Saw Waste Wood of Bangkirai (Shorea laevis Ridl)): G.Siska, Sarinah, D.L. Bangun Admin JHT
HUTAN TROPIKA Vol 13 No 1 (2018): Volume 13 Nomor 1 Tahun 2018
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTThe particle board is a wood product resulting from the heat-blowing process between a woodparticle mixture or lignocellulosic raw material with an adhesive or a wood product ofreconstitution. A research on particle board manufacture was conducted using Bangkirai woodparticles bonded together with urea formaldehide (UF) adhesive. This research aimed todetermine the quality of particle board produced on its physical and mechanical properties.Particle particle size is 30 cm x 30 cm x 1 cm with target density 0,7 g / cm3. Results revealedthat UF adhesive level had an effect on moisture content, density, water absorption, thicknessswelling, MoR, MoE and screw-withdrawal strength. Density and thickness swelling that couldfavor the Japanese standards either partially or completely. Based on the value of density,particle board of this experimental results is more suitable for use as a room divider andfurniture raw materials. Particle board with 25% adhesive content provides a good prospect inthe particle board manufacturing industry.Keywords: Particleboard; physical and mechanical properties; Bangkirai wood; UreaFormaldehyde adhesive

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