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ANALISIS FINANSIAL REHABILITASI AREAL EKS IUPHHK-HA PT KALANG MURNI DI PROVINSI KALIMANTAN TENGAH : Christopheros, Marthinus R. Lambung, Johanna M.R., dan Gimson Luhan Admin JHT
Jurnal Hutan Tropika Vol 12 No 1 (2017): Volume 12 Nomor 1 Tahun 2017
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACK Production forest management in Indonesia had been developed using a pattern of forest concessions (IUPHHK) since 1970s. In the development portion has ended a period of concession for 20 years. Forest areas that are not burdened the forest concessions or other rights, then the management is partly handed back to the goverment, and some management handed over by other appliances as Timber Utilization Permit (IPK). In connection with that carried a 0,3% timber cruising activities in the work areas of PT. ? Kalang Murni to obtain details about the condition of the standing stock. According on the analysis results, the standing stock of commercial trees in the group of diameter ? 20 cm contain average number of 25.5 stems/ha and average volume of 15.69 m3/ha, and the standing stock of other timber in the group of diameter ? 20 cm contain average number of 27.3 m3/ha, and average volume of 20.57 m3/ha. With the result that the total standing stock of the tress at the secondary forest of PT. Kalang Murni contain average number of 52.8 stems/ha and and average volume of 36,26 m3 / ha. According to the financial analysis, the Indonesia Strip Cutting and Planting (TJTI) system is suitable applied at the site when the interest rate in the position of 18%, whereas the Clear Cutting and Artificial Regeneration (THPB) system is not suitable at the same of interest rate. Keyword: Financial, forest concession, secondary forest, standing stock

KEANEKARAGAMAN JENIS DAN STRUKTUR TEGAKAN TINGGAL DI AREAL KERJA PT SARPATIM PROVINSI KALIMANTAN TENAH : H e r i a n t o Admin JHT
Jurnal Hutan Tropika Vol 12 No 1 (2017): Volume 12 Nomor 1 Tahun 2017
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACK Logging activities have an impact on changes in composition and standing structure, tree species distribution, community similarity and species diversity. This study was aimed to determine the diversity of structures and composition of trees at the logged-over forests. Area of study was located at annual Block of 2005, 2010, and 2015 of forest concession (IUPHHK-HA) PT Sarpatim in Central Kalimantan Province. Data was collected at 2017. The results showed that the composition and structure of the stands are ecologically different, which is indicated by the low type of species equality index. The stands at the level of seedlings, sapling, poles and trees from each location are almost all different. But there are some of the same types encountered dominating on the block locations of 2005, 2010 and 2015 such as Shorea leprosula, Dipterocarpus borneensis, Shorea laevis, Litsea sp. The stand density at the 2005 block location is higher than the two sites in 2010 and 2015, while the location of 2015 is the location with the lowest stand density. Keywords Composition, density, diversity, standing structure.

VARIABILITAS SIFAT KIMIA KAYU BULAN DAN MAHANG BERDASARKAN ARAH AKSIAL : John F. Gustaf, I.Nyoman Surasana dan Gimson Luhan Admin JHT
Jurnal Hutan Tropika Vol 12 No 1 (2017): Volume 12 Nomor 1 Tahun 2017
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Wood of moon (Fagraea crenulata) and wood of mahang (Macaranga sp.) are not included the commercial timber species, therefore the knowledge regarding chemical properties of their woods are needed in order to provide information for various purposes according to their properties. The research was aimed to know chemical properties of moon wood and mahang wood. The research had been conducted at the laboratory of Forestry Department, University of Palangka Raya since February to March 2017. Research resultd showed that the solubility of moon and mahang woods in the cold water, hot water, 1% NaOH and alcohol benzene are classified as high. According chemical components analysis, their wood are not suitable for pul and paper, because they have some characteristic as follow: holoselulosa is poor, cellulose is low, hemicellulose is middle, and lignin is not good. Meanwhile, wood ash of moon and mahang are classified moderate (range of Indonesia chemical components of broadleaf wood is range start from 0.2 to 6%) with values of them are 0.654% for moon wood and 0.689% for mahang wood. With the result their woods are considered to wood energy utilization. Keywords: chemical component, mahang wood, moon wood, wood energy

PEMANFAATAN BAMBU DAN PEWARNA JARENANG SEBAGAI BAHAN PELENGKAP KERAJINAN ROTAN : N u w a Admin JHT
Jurnal Hutan Tropika Vol 12 No 1 (2017): Volume 12 Nomor 1 Tahun 2017
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Jarenang colouration coming from latex of Jarenang fruit (Daemonorops sp) species that grow well at the low land forest. Generally jerenang colouration has used to colouring wood, stone, vernis, ceramics, paper and paint etc. This substance also can to be used as medicine of dysentery, blood solidification, leather tanner and cosmetics material. The experiment was conducted at the social community group named Silip Rawi that be located at the Bukit Rawi Village, Kahayan Hilir District, Central Kalimantan Province. Silip Rawi group has guided by Science and Technology for Community Program (IbM). This experiment applied jerenang colouration to colouring bamboo as complement material of rattan handicraft. Some stages of this experiment as follow: First, cleaving bamboo and make s.t. thin. Second, colouring the bamboo using colour of red, black, blue ect. Then colored bamboo was dehydrated using sunlight. Finaly, colored bamboo as insertion insert to rattan handicraft to improve quality of them. Colored bamboo create the motif of line, curve, numeral, figure, scribal of personal or group name, village nama, city name etc. at the rattan handicraft to raise the sale price. Keynotes: Bamboo, colouring, jarenang, rattan handicraft.

ANALISIS FINANSIAL HUTAN RAKYAT DI KECAMATAN JABIREN RAYA KABUPATEN PULANG PISAU KALIMANTAN TENGAH : Fierta Tirtajaya, I Nyoman Surasana, Nursiah Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACK One of some methods to conserve the peat forest species is increasing the local peoples income. In order that the research regarding financial and economic analyzis of forest community at the peat forest is significant needed. The aim of this research was to know the benefit of forest community project that be developed at the Jabiren Raya, Pulang Pisau District, Central Kalimantan Province. The research was done using interview agree with list of questioner and literature study. Research result showed that cultivation of Dyre lowii and Hevea brasiliensis are profitable with NPV and BCR namely IDR 67.5 mill and 1.36, 31.4 mill and 1.19, and 5.5 mill and 1.04 per ha at the bank rate of 13%, 15%, and 17% respectively. Profitable of IRR namely 18% bigger than social bank rate. Keynotes: Dyre lowii, Financial, forest community, Hevea brasiliensis

PENDUGAAN KARBON TERSIMPAN TEGAKAN AKASIA (Acasia mangium Wild.) UMUR 10 TAHUN DI HUTAN TANAMAN INDUSTRI PT KORINTIGA HUTANI, PROVINSI KALIMANTAN TENGAH : Vieve Sanjaya Geruntung Nyahu Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Forest role as climate stabilizer may be realized due to its ability to control world climate change caused by the rising concentrations of greenhouse gases. Carbon dioxide (CO2) is one of greenhouse gas with very rapid increase in its concentration. An effort has been taken to suppress the increase in CO2 is by controlling the concentration of carbon through advancement of carbon absorption program, where organic carbon as a result of photosynthesis will be stored in the biomass of forest stands or woody trees. Acacia (Acacia mangium Wild.) is one of fast growing species and is often used as a staple crop in forest plantation (HTI). The purpose of this study is to determine the potential of carbon stock by diameter class, predict carbon stocks and aerial CO2 absorption by Acacia trees in forest plantation area of PT Korintiga Hutani, Lamandau District, Central Kalimantan Province. The study was carried out in PT Korintiga Hutani plantation forest and took Acacia stands aged years as its object. Biomass measurement of Acacia stands was done indirectly using allometric formula proposed, whereas biomass of under the plant, woody and litter necromass was allegedly using the direct method. Carbon of Acacia stands, woody necromass, undergrowth and litter were determined using the formula, where 46% of biomass is carbon content. Lastly, the amount of carbon dioxide absorbed by Acacia stands was predicted using the formula. The results show that the average carbon stock by diameter class of Acacia stands aged 10 years are 109.66 tons/ha, respectively. Carbon stocks of undergrowth, woody necromasa and litter on the location of Acacia stands aged 10 years are 1.42 tons/ha, 0.15 tons/ha and 3.00 tons/ha, respectively. Total carbon stocks on the location of Acacia stands aged 10 years are 114.23 tons/ha. In the meantime, CO2 absorbability of Acacia stands aged 10 years amounted to 402.46 tons/ha with the rate of CO2 uptake increased by 40.25 tones/ha/year, respectively. Keywords: Acacia stands, carbon stock, forest plantation, carbon dioxide.

ANALISIS POTENSI POHON DI AREAL BEKAS TEBANGAN PT PUTRA KATINGAN PRATAMA DI KABUPATEN KATINGAN : John F. Gustaf, Gimson Luhan, V.S.G.Nyahu Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Production forest management in Indonesia was developed using a pattern of forest concession since 70’s. Based on regulation of Ministry of Forestry No.11/2009, the silvicultural systems that be applied at the site were Indonesian Selective Cutting and Planting (TPTI), Selective Cutting and Strips Planting (TPTJ), Gap Cutting (Tebang Rumpang), and Clear Cutting with Artificial Regeneration (THPB). In connection with that, there are activities of timber, cruising 2-5% in the working areas of PT. Pratama Putra Katingan to obtain details about the condition of standing stock at the forest. They are conducted every 10 years. The observation results of commercial standing stock for diameter ? 20 cm namely 45.20 stems/ha and volume of 19.65 m3/ha, meanwhile the total standing stock of forest namely 72.70 stems/ha and volume of 40.75 m3/ha. Keywords: Commercial species forest concenssion, standing stock

STRATEGI PENGEMBANGAN OBYEK WISATA AIR TERJUN SANGGILIPAN DI KECAMATAN DELANG KABUPATEN LAMANDAU : Antonius Triyadi1, Yuni Setiawati 2 Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT This research aimed to identify the driving factors and obstacles as well as analyzing strategic options might be taken by Lamandae, Central Kalimantan Province in order to manage Sanggilipan waterfall at the site. The research was carried out at Sanggilipan waterfall in Jojabo Hulu Village, Delang sub-District, Lamandau District. The research was conducted using SWOT as its analytical tool, and based on the fact that Sanggilipan waterfall has plenty of natural potential but has not been optimally utilized, this research proposes SO (Strength and Opportunity) as alternative strategy for its further development. Therefore, the development of Sanggilipan waterfall should consider the Strength and utilize the opportunities it has. Keywords: Strategic options, Sanggilipan waterfall, SWOT analysis

STRUKTUR DAN PENGEMBANGAN EMBRIO SOMATIK EKSPLAN DAUN Dyera lowii Hook.f. MELALUI TEKNIK IN-VITRO : Tri Suwarni Wahyudiningsih1*, Issirep Sumardi2 Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT The propagation of tree plus Dyera lowii can be anticipated by micropropagation via somatic embryogenesis. The study was aimed: 1). to determine the composition of growth regulators for induction of somatic embryos from leaf explant, 2). To study of the structure and development of somatic embryo D. lowii. The first leaf of seedling was utilized as sources of explants. The base leaf explant growth roots directly on MS (Murashige & Skoog) medium with 2 mg/l Kinetin + 7.5 mg/l IBA, but indirectly via callus phase at IBA 5 mg/l. The middle leaf explant produced somatic embryo resulting yellowish-white and compact texture on MS medium with 0.2 mg/l Benzyl Adenin + 0.5 mg/l IBA. Embryogenic callus cells have formed proembryonic stage: 2-cells, 4-cells, round, globular and heart phase. Keywords: Micropropagation, explant, somatic embryo, pro-embryo, suspensor

ANALISIS FINANSIAL REHABILITASI AREAL EKS IUPHHK-HA PT KAYON TIMBER COMPANY II DI PROVINSI KALIMANTAN TENGAH : Marthinus R. Lambung, Christopheros, Johanna Maria Rotinsulu dan Gimson Luhan Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Forest concession of PT Kayon Timber Company II is one of some forest concessionaries in Central Kalimantan Province that must be rehabilitated. This research was aimed to analyze the financial feasibility of Indonesian Strips Cutting and Planting (TJTI) and Clear Cutting with Artificial Regeneration (THPB) silvicultural systems in order that to rehabilitate the site. The observation results of commercial standing stock for diameter ? 20 cm namely 36.7 stems/ha and volume of 21.2 m3/ha, meanwhile the total standing stock of forest namely 67.8 stems/ha and volume of 35.36 m3/ha. Applying the TJTI and THPB silvicultural systems are suitable at the interest rate of 18%. Profitable of IRR namely 18% bigger than social bank rate. Keynotes: Financial analysis, forest concession, profitable

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