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ANALISIS PERTUMBUHAN DAN FINANSIAL TANAMAN SUNGKAI (Peronema canescens) DI KAPUAS, KALIMANTAN TENGAH : Wahyudi Admin JHT
HUTAN TROPIKA Vol 11 No 2 (2016): Volume 11 Nomor 2 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Forestry concession conduct the plantation project at the logged over areas using TPTI silvicultural system. The aim of this research was to analyze the growth and financial value of sungkai (Peronema canescens) that be planted at the logged over areas of PT Gunung Meranti at the Kapuas, Central Kalimantan Province, using TPTI silvicultural system. The research analyzed of 100 samples of sungkai and it analysed of its growth until 13 years old and estimate of financial value until 40 years old at the future with loan interest assumption 19,5% and 16%, expense increase 10%, price decrease 10% and the form factor 0,6. The living percentage of sungkai at the 13 years old namely 89,7%. Mean Annual Increment (MAI) namely 11,90 m3/ha/year, and the best financial cycle for the worker of wood company class namely 13 to 25 years. Keywords: Analyze, financial, growth, Peronema canescens

SIFAT FISIKA MEKANIKA BRIKET ARANG KAYU LIMBAH INDUSTRI KAYU LAPIS DAN LIMBAH KAYU HTI : Alpian dan Wahyu Supriyati Admin JHT
HUTAN TROPIKA Vol 11 No 1 (2016): Volume 11 Nomor 1 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Wood waste is biomass waste from wood cutting and the waste of the production process of the wood processing industry. Waste can be seen as a form of output side of a production process which often do not have economic value (unuse). Charcoal briquettes can be developed the waste biomass utility. This study aims is to determine the physical-mhanical properties of charcoal briquettes produced from the raw material of wood charcoal of plywood industrial waste (waste stripping finir) and waste of indutry plantation forest (HTI) from top/end section. Physical-mechanical properties of charcoal briquettes of this research qualify to the general requirements of the charcoal Indonesia quality (SNI 01-6235-2000). Keynotes: Charcoal briquette, waste, wood

Kualitas Papan Semen Partikel Kayu Mahang Quality Cement Board Particle Wood Mahang : Gimson Luhan, H.M. Damiri, John F. Gustaf Admin JHT
HUTAN TROPIKA Vol 11 No 1 (2016): Volume 11 Nomor 1 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Exploiting the potential and diversity of types of peat swamp forest is not known (lesser known species) both types of timber and non-timber forest products, needs to be done to anticipate the reduction in the availability of commercial timber is to alternatively manufacture of cement particle board. As an alternative building materials manufacture of particle board has good prospects, given the increasing need tehadap shelter each year. Selection of wood types mahang as many grown on peat swamp forest in Central Kalimantan and nature meet the criteria of wood as raw material for cement particle board and supported by the manufacturing process is quite easy. The study aims to determine the effect of particle size and the ratio of adhesive cement with wooden particles mahang against mechanical and physical properties of particles produced cement board, and can determine the quality of the cement particle boards that meet the requirements of building materials. Based on the terms of quality of cement board wood patikel mahang produced, including a group of cement particle board type III (> 0,6 g / cm3), medium density of 0,40 g/cm3 - 0,80 g/cm3, and including cement particle boards used for wall with a specific gravity of 0,70 to 0,90. Based on the terms of raw material utilization efficiency of wood mahang then recommended a combination treatment a1b1 (the weight ratio of the amount of cement with particles 1: 1,5 and small particle size) produces cement particle board that filled the finest wood standard. Research advanced mechanical properties of cement particle board of wood to meet the internal bond (kg/cm2) and a strong grasp of the screw (kg). Keywords: wood particle mahang, cement, physics and mechanical properties of cement particle board

Tabel Volume Pohon “Berkhout” pada Hutan Alam Tanah Kering di Wilayah Kapuas Hulu, Provinsi Kalimantan Tengah (The Local Table of Volume on the Dry Land Natural Forest at the Upper Stream Kapuas, Central Kalimantan Province) : Wahyudi Admin JHT
HUTAN TROPIKA Vol 11 No 1 (2016): Volume 11 Nomor 1 Tahun 2016
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT The local table of volume is needed to determine volume of stands just based on their diameters in the certain of region. The research was aimed to create the local table of volume based on three groups of trees, namely Shorea groups, Dipterocarp non Shorea groups, and non Dipterocarp groups. Location of research was in Sub-District of Kapuas Hulu and Mandau Talawang, District of Kapuas, Central Kalimantan Province. Research method using tabel of volume equations in the form of Berkhout model that in order of regression equations. Research result showed that table of volume to Shorea groups, Dipterocarp non Shorea groups, and non Dipterocarp groups on the those two sub-districts are V = 0.00012D2.549, V = 0.000172D2.4319, and V = 0.00009D2.6292 respectively. According to the F test and R2 value, the local tables of volume are suitable used to predict the volume of the stands in the sites and their surrounding. Keywords: Dipterocarp, regression, shorea, table of volume.

KARAKTERISTIK SPEKTRAL ELEKTROMAGNETIK SPECIES DOMINAN PADA HUTAN RAWA GAMBUT KALIMANTAN TENGAH (Electromagnetic Spectral Characteristics of Dominant Species at the Peat-Swamp Forest at Central Kalimantan): Hendrik Segah1*, Freddy Wijaya1, Laju Gandharum2 dan Hiroshi Tani3 Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTThis paper reports the results of the spectral library from dominant trees in peat-forest in Central Kalimantan, Indonesia supported under JST-JICA Project: “Wild Fire and Carbon Management in Peat Forest in Indonesia”. Spectral libraries are commonly established as a means to archive representative signatures of natural materials. Such signatures can then be used to train feature extraction and classification algorithms applied to remote sensing data imagery. Spectral analyses were performed to the 33 dominant species in peat-forest in Central Kalimantan, Indonesia obtained during the field survey measurement (in-situ measurements) and airborne campaign by HYMAP sensor in 2011-2014. We found, each vegetation type has unique spectral signature or characteristics. The shapes of reflectance spectra can be used for identification of vegetation types combine with remote sensing data (airborne and satellite images). Keywords: Spectral library/signature, Peat-Forest, Spectroradiometer, Vegetation and Kalimantan

PEMANFAATAN IJUK DAN LIMBAH PARTIKEL KAYU ALAU SEBAGAI BAHAN BAKU PAPAN PARTIKEL (Utilization of Palm Fibers and Wood Particle Waste of Alau as Particle Board Materials): Grace Sisca, Sarinah, 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

ABSTRACTParticle board is the multiuse materials that could be used as substitute materials of the solid wood as to review light in weight construction, furniture raw material, etc. Wood particle waste of alau is produced by saw mill or wood furniture as the waste, whereas the palm fibers is produced from non forestry plants of palm that grow well at the peat-swamp lands. This research was aimed to analyze the mixed of palm fibers and wood particle waste of alau to produce the particle board materials. Some combination of treatments were tested to produce the valuable particle board. The research results showed that the exact combination between palm fibers and wood particle waste of alau produced the valuable particle board materials with up to standars of JIS A 5908:2003 for review physical properties. The highest density of particle board and its stability dimension were attained at the moment of the composition between palm fibers and wood particle waste of alau namely 25:75 with glue content namely 40% . Keywords: palm fibers, particle board, physical properties,waste of alau

SKRINING ENZIM DARI SAMPEL DAUN JELUTUNG RAWA (Dyera lowii Hook f.) UNTUK ANALISIS ISOZIM SEBAGAI STUDI AWAL KERAGAMAN GENETIK (Screening Enzyme from Leaf of Dyera lowii Hook f. to Isozyme Analysis. The First Study of Genetics Variety) : Tri Suwarni Wahyudiningsih Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACT Jelutung rawa (Dyera lowii Hook f.) is the commercial and endemic species of peat-swamp forest with sensitive status, therefore the research to analyze its genetics variety is very important. The research was aimed to analyze the seven of enzyme in the leaf of D. lowii that well-marked by the emergence of polymorphic tape pattern consistently. The research was conducted at November to December 2012 in the tree improvement laboratory of Gadjah Mada University. Leaf of D. lowii samples were gotten from D. lowii plantation at the Cilik Riwut Street, nine km from Palangka Raya City. There are seven enzyme system to screening, namely Shikimate Dehydrogenase (SHD; EC 1.1.1.25), NAD(P)H-Diaphorase (DIA; EC 1.6.2.2), Glutamate Oxaloacetate Transaminase (GOT: EC 1.11.1.7), Acid Phosphatase (ACP; EC 3.1.3.2), 6-Phosphogluconate Dehydrogenase (6-PG; EC 1.1.1.44), Esterase (EST; EC 3.1.1), dan Peroxidase (POD; EC 1.11.1.7). Stages of research were preparation, leaf extraction, supernatant, electroforesis “Wendel & Weeden”, colouring, fixation, and gel dehydration. Isozyme was detected using Rf (Relative value from Bromophenol Blue) to make the zymogram. Polymorphic tape pattern consistently was resulted by enzymes of DIA, POD, ACP, EST, and GOT, whereas polymorphic tape pattern inconsistently was resulted by enzymes SHD and 6-PG. Furthermore, the polymorphic tape pattern consistently could to analyze genetics variety. The first study of genetics variety showed that there are four locus at the leaf of D.lowii, namely Est-1, Est-2, Est-3, and Got-1 in the 14 of alel. Keywords: Dyera lowii, enzyme, isozyme analysis, polymorphic

KAJIAN PULPING SODA BEBAHAN BAKU PELEPAH PISANG (Musa paradisiaca) (A Study on Pulping Chemical Methods Based of Banana Leaves (Musa paradisiaca): Miati1), Renhart Jemi 2) , Endra Cipta 3) Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTStem of the banana bunch could to be used as basic material to the making of pulp in order to substitute the basic material of wood. This research was aimed to know the cooker solution concentration of NaOH to produce the best pulp rendement. The research using soda process with NaOH as the cooker solution in the three variation of concentration, i.e. 5%, 10%, and 15%. Research result showed that NaOH with concentration of 5% produce the best pulp rendement, namely 85.58%, they were comprised 39.98% of pulp rendement filtrate and 44.6% of uncooked rendement. Keywords: Concentration of NaOH, pulping soda, stem of banana

PENENTUAN TINGKAT BAHAYA EROSI DALAM RANGKA MENENTUKAN PRIORITAS REHABILITASI LAHAN DI BUKIT TANGKILING, KALIMANTAN TENGAH (The Erosion Levels in Order to Determine the Rehabilitation Priority in Bukit Tangkiling, Central Kalimantan): Yusintha Tanduh, Rosdiana, Nursiah Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTThe Nature Recreation Parks of Bukit Tangkiling is placed at the Bukit Batu Sub-District, Palangka Raya City, it has the variation of topography that dominated by vegetables (agriculture crops), scrub, bushes, and secondary forest. Its site must be managed carefully in order to totality conservation of biodiversity and its landscape. The aim of this research is to calculate the erosions at the each site of the Bukit Tangkiling Nature Recreation Parks and also it make the distribution map of erosion. The research using USLE method (Wishmeier dan Smith, 1978). Research result showed that vegetables at the site consist of string bean, eggplant, cassava, etc. There were wild-grassland and critical lands that be caused by annual dry-season. The mean annual precipitation namely 27.453 cm, with its maximal at the December namely 45.73 cm; and its minimal at the August, namely 12.08 cm. The mean rains namely 16.9479 days per month with its maximal at the December, namely 24.87 day per month; and its minimum at the September, namely 8.75 day per month. The high value of length and slope is 3.389867 that resulted by vegetable of string bean whereas the lowest value is 1.796597 that resulted by the critical land. The value of management plants and conservation action are 0.7 to 1. Keywords: Erosion, conservation, Bukit Tangkiling, vegetables

SIFAT PEREKATAN KAYU MAHANG (Macaranga hypoleuca) ASAL HUTAN RAWA GAMBUT KABUPATEN PULANG PISAU (Wood Adhesion Properties of Macaranga hypoleuca from Peat-Swamp Forest in Pulang Pisau District): Yanciluk dan M. Damiri Admin JHT
Jurnal Hutan Tropika Vol 10 No 2 (2015): Volume 10 Nomor 2 Tahun 2015
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

ABSTRACTThis study was aimed to determine the wood adhesion properties of mahang (Macaranga hypoleuca) from Peat-Swamp Forest in Pulang Pisau District, as well as the influence of the axial and radial position of the adhesive properties of mahang wood and wood allotment of mahang for raw material wood processing industry. The research used the Factorial Complete Random Design (CRD) 3 x 2. The first factor was the actial wood position (A) consist of the bottom (A1), the middle (A2), and the top (A3). The second factor was radial position consist of axial (B1) and radial (B2). The data were analyzed using Honestly Significant Difference (HSD). Testing properties of solid wood sliding firmness and constancy gluing wood with ASTM procedure of D 905-49. Research result showed that properties of mahang wood adhesive as follow: firmness sliding radial cross-section namely 57.3 kg per cm2, firmness sliding sectional tangential namely 70.3 kg per cm2, bonding strength of the radial cross-section namely 58.7 kg per cm2, bonding strength tangential cross section namely 63.2 kg per cm2, percent damage to the radial cross-section namely 41.8% and tangential cross section namely 13.3%. There is a relationship of correspondence between adhesive properties and quality of the wood to influence the direction of the axial and radial position of mahang wood. Keywords: Adhesive properties, axial, radial, mahang

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