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INDONESIA
Indonesian Journal of Forestry Research
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 23557079     EISSN : 24068195     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Indonesian Journal of Forestry Research (IJFR) was first published as Journal of Forestry Research (JFR) on November 2004. The last issue of JFR was Volume 10 Number 2 published on December 2013. The Journal of Forestry Research has been accredited by the Indonesian Institute of Sciences since 2008. The last accreditation was on 21 June 2013 (accredition number: 538/AU3/P2MI-LIPI/06/2013) which will be valid until 2016. IJFR will be issued in one volume every year including two issues which will be delivered every April and October. This journal is published by Forestry Research and Development Agency (FORDA), Indonesia.
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Articles 498 Documents
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ANATOMICAL AND PHYSICAL PROPERTIESOF BISBUL WOOD (Diospyros blancoi A.DC.) Krisdianto, Krisdianto; Abdurachman, Abdurachman
Indonesian Journal of Forestry Research Vol 2, No 1 (2005): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2005.2.1.57-67

Abstract

Ebony (Diospyros sp.)  is a heavy hardwood that is  popularly known as blackwood. Diospyros consists of over 300 species spread throughout tropics area and about 100 species occur in Indonesia. Bisbul wood (Diospyros btancoi A.DC.) is one species of  streaked ebony that is locally known as buah mentega.  The anatomical and physical properties of  bisbul  were studied to collect information  for wood identification  and to support appropriate use of the timber. Anatomical properties were studied from microtome sectioned samples, which have been coloured by safranin and mounted by entellan, while fiber dimensions  were studied from macerated samples.  Physical properties  of  bisbul wood studied include moisture content, density and percentage of volumetric shrinkage. Moisture content and density were studied from 20 x 20 x 20 mm samples based on wet and oven dry condition. Volumetric shrinkage was measured from dimension changes in radial, tangential and longitudinal shrinkage of 20 x 20 x 40 mm samples. The samples were measured in wet and oven dry conditions. The main anatomical characteristics to identify bisbul wood were black wood with pinkish streaked, heavy and very hard,  very fine texture, even, lustrous surface and glossy, distinct growth ring, small size of vessels, apotracheal parenchyma forming reticulate pattern. The average moisture content was 59.86 ± 2.84%,  the density average was 0.74 ± 0.04 gr/cm3  and volumetric shrinkage was 10.41±0.70%.   The higher the stem, the more moisture  content and the lower the density will be. Sapwood density was lower and had more moisture  content than heartwood. The black pinkish heavy wood, bisbul was recommended to be used for carvings, sculpture, souvenir and luxuryinterior products.
THE EFFECT OF HEAT TREATMENT ON THE DURABILITY OF BAMBOO Gigantochloa scortechinii Kamarudin, Norashikin; Sugiyanto, Krisdianto
Indonesian Journal of Forestry Research Vol 9, No 1 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2012.9.1.25-29

Abstract

Bamboo signifies as one of the fastest growing plants and it can be used for various products. Intropical countries such as Indonesia and Malaysia, bamboo is abundantly available at reasonable prices, therefore it is used for numerous purposes. However, as lignocellulosic material, bamboo is susceptible to fungal and insect attacks. Heat treatment is an option to improve bamboos durability. The objective of this study was to improve the durability of bamboo using hot oil palm treatment. A Malaysian grown bamboo species, Buluh Semantan (Gigantochloa scortechinii), as a study material was soaked in hot oil palm for various temperatures and soaking time, before being inoculated with the basidiomycete Coriolus versicolor in an agar block test. The results demonstrated that the longer the heating time, the more improved the durability of bamboo. Altering the temperature in the palm oil treatment produced varying results. Bamboo blocks that heated in hot oil palm at 100°C for 60 minutes shows considerably less weight eduction that indicates less fungal attack. Overall, the higher the temperature, the better the durability of bamboo. Please indicates what the meaning of heat treatment in this experiment, it is not clear.
ANALYSIS OF USING EFFICIENT LOGGING TOOLS AT PT. PURWA PERMAI IN CENTRAL KALIMANTAN Suhartana, Sona; Yuniawati, Yuniawati
Indonesian Journal of Forestry Research Vol 5, No 1 (2008): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2008.5.1.53-64

Abstract

A high log demand that often exceeds its supply capability should be overcome by using appropriate logging  tools. Numerous  kinds and types of logging  tools require  a well planning in their utilization. Number of tools which are greater or fewer than what is actually needed can be disadvantageous  for a company. In relevant to these aspects, a study was carried out at a timber estate in Central Kalimantan  in 2007. The aim of the study was to find out an efficient number  of tools used for logging  in a timber  estate. The analysis was based on the target and realization of the company’s log production. The result revealed that: (1) Optimum number of logging tools depended on production target,  i.e. 41 units  of chainsaws  for felling,  42 units  of farm tractors  for skidding,  9 units of loaders for loading and unloading, and 36 units of trucks for transportation; (2) Number  of logging tools as obtained from all activities  in the field was fewer than that from  the analysis based on production target and realization. This condition  indicated that number of logging tools used in the company was not yet efficient.
EFFECT OF SAPPAN WOOD (Caesalpinia sappan L) EXTRACT ON BLOOD GLUCOSE LEVEL IN WHITE RATS Saefudin, Saefudin; Pasaribu, Gunawan; Sofnie, Sofnie; Basri, Efrida
Indonesian Journal of Forestry Research Vol 1, No 2 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2014.1.2.109-115

Abstract

Sappan wood or kayu secang (Caesalpinia sappan L.) was reported of having medicinal properties,  such as  natural antioxidant, relieve vomiting of blood, and mix of ingredients for malaria drugs.  The research was conducted to study the influence of ethanol extract from sappan wood on blood glucose level of white rats. The study of the blood glucose level in rats was carried out by using glucose tolerance method. It was measured by Refloluxs (Accutrend GC) with Chloropropamide 50 mg/200 g BW (Body weight) as positive control. The ethanol extracts were used in various concentrations 10, 20, 30, 40 and 50 mg/200 g BW per-oral and was observed every  hour,  beginning one hour before to 7 hours after the extract being administered. The results showed that treatment of ethanol extract of sappan wood by administer doses gave remarkable effect on the blood glucose level in white rat. It reduced the glucose level in the blood compared to the negative and positive control. Treatment of dose 30 mg/200 g BW gave similar effect to positive controls, while a dose of 50 mg/200 g BW gave lower blood glucose level (93 mg/dl) than the positive controls.
EFFECT OF ACTIVATED CHARCOAL ADDITION ON FORMALDEHYDE EMISSION OF MEDIUM DENSITY FIBERBOARD Darmawan, Saptadi; Sofyan, Kurnia; Pari, Gustan; Sugiyanto, Krisdianto
Indonesian Journal of Forestry Research Vol 7, No 2 (2010): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2010.7.2.100-111

Abstract

The manufacturing of medium density fiberboard (MDF) using dry forming process for interior purpose requires extensive amount of thermo-setting urea formaldehyde (UF) adhesive. Unfortunately, this adhesive brings about formaldehyde emission from the resulting MDF, which was potentially harmful to human beings. The use of activated charcoal can be effective to reduce such emission. As the relevance, this research aimed to investigate the effect of activated charcoal addition to the MDF pulp on formaldehyde emission from the MDF. The fibers for the MDF-mat forming were the pulp procured from the MDF factory, resulting from the thermo-mechanical pulping (TMP) conducted on the mixed mangium wood (Acacia mangium) and rubber wood (Hevea brasiliensis) in 3:1 (w/w) proportion, respectively.  Such mixed TMP pulping was also done in the factor y.  The bonding between TMP pulp fiber during mat forming was assisted by the use of UF adhesive.  Prior to the MDF mat forming , was added to the resulting TMP pulp-fibers activated charcoal in  various amount, 2%, 4% and 6% based on fiber mass as well as based on UF adhesive mass. The activated charcoal was prepared by carbonizing candle nut shell into charcoal followed by activation process using phosphate solution.  Meanwhile the forming of MDF mat employed air-dr y process. As the control, MDF forming with UF adhesive was performed without addition of activated charcoal. It turned out that the activated charcoal-added MDF exhibited effective reduction in formaldehyde emission and significant improvement in physical and mechanical properties, i.e. lower thickness swelling , and greater MOR , MOE and internal bond, compared to the control MDF. The use of activated charcoal at 4% based on the adhesive mass seemed to be the optimum amount.  Physical and mechanical properties of the activated charcoal added MDF could mostly meet the JIS specification.
THE ECONOMIC VALUE OF HYDROLOGICAL SERVICES IN MENDALAM SUB WATERSHED, KAPUAS HULU REGENCY, WEST KALIMANTAN, INDONESIA Roslinda, Emi; Yuliantini, Yuliantini
Indonesian Journal of Forestry Research Vol 1, No 1 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2014.1.1.1-8

Abstract

Forest ecosystem supports almost all of  the needs of  human being through its contribution of  tangible and intangible values.  Currently, the intangible values have gained less attention than the tangible values that cause  underestimation of  the total value of  the forest conversion into other more tangibly profitable usages, and miss-management of  the forest. One of  the important intangible values is the hydrological value that has been hardly calculated until now.  This research the intangible values of  water for household, transportation, agriculture and fishing in Mendalam Sub Watershed, Kalimantan. The economic values calculated based on market prices, opportunity costs and consumer’s surplus methods. The results showed that based on the    opportunity cost method the economic values of  the hydrological services was about Rp 8,043,706,237.50 per year. Meanwhile, the economic values of  the hydrological services based on the consumer’s surplus method gave lower value than the former method, i.e. Rp 8,031,351,664.60 per year. This study showed that the economic value of  the hydrological services was very high, which has not been included in the calculation yet. However, without trees there would be no forest and all other values included water value would not exist. Consequently, current forest management should put forest ecosystem as important to consider.
ALLOMETRIC EQUATIONS FOR ESTIMATING ABOVEGROUND BIOMASS IN PAPUA TROPICAL FOREST Maulana, Sandhi Imam
Indonesian Journal of Forestry Research Vol 1, No 2 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.264 KB) | DOI: 10.20886/ijfr.2014.1.2.77-88

Abstract

Allometric equations can be used to estimate the biomass and carbon stock of forest. However, so far the allometric equations for commercial species in Papua tropical forest have not been appropriately developed. In this research, allometric equations are presented based on the genera of commercial species. Few equations are developed for the Intsia, Pometia, Palaquium and Vatica genera, and an equation of a mix of these genera represents commercial species. The number of trees sampled in this research was 49, with diameters (1.30 m or above buttresses) ranging from 5 to 40 cm. Destructive sampling was used to collect the samples where diameter at breast height (DBH) and wood density (WD) were used as predictors for dry weight of total above-ground biomass (TAGB). Model comparison and selection were based on the values of F-statistics, R-sq, R-sq (adj), and average deviation. Based on these statistical indicators, the most suitable model is Log(TAGB) = c + aLog(DBH). This research finding can be extrapolated for managing forests related to carbon balance. Additional explanatory variables such as commercial bole height (CBH) do not really increase the indicators’ goodness of fit for the equation. An alternative model to incorporate wood density must be considered for estimating the aboveground biomass for mixed genera.  Comparing the presented equations to previously published data shows that these local species-specific and generic equations differ substantially from previously published equations and that site-specific equations must be considered to get a better estimation of biomass.
AN OPTIMUM DESIGN FOR SEEDLING SEED ORCHARDS TO MAXIMIZE GENETIC GAIN: AN INVESTIGATION ON SEEDLING SEED ORCHARDS OF Eucalyptus pellita F. Muell Leksono, Budi; Kurinobu, Susumu; Ide, Yuji
Indonesian Journal of Forestry Research Vol 6, No 2 (2009): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2009.6.2.85-95

Abstract

MINIMIZING RESIDUAL STAND DAMAGE AND FELLING COST USING LOWEST POSSIBLE FELLING TECHNIQUE (A case study in one logging company in West Kalimantan) Suhartana, Sona; Krisdianto, Krisdianto
Indonesian Journal of Forestry Research Vol 2, No 1 (2005): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2005.2.1.1-11

Abstract

The implementation of felling technique in logging companies is not yet carried out efficiently and appropriately. Study on the lowest possible felling technique (LPFf) is considered  to be important to  reduce residual  stand damage and felling cost. This study was carried out in a logging company in West Kalimantan in 2004. The aim of this study was to  determine the effect of LPFT on residual stand damage and felling cost. Data collected in this research include: residual stand damage, working time, timber  volume, productivity,  efficiency,  stump   height  and  felling cost.  Two categories  data were analyzed with  respect  to  their  possible  differences  using  T-test.    The  result  showed  that  the implementation   of  LPFT  was more advantage impact compared  to   that of  conventional felling technique, which is  indicated by the following factors:  (1)  Trees damage decreased 2.96%;  (2) Poles damage decreased 4.75%;  (3) Felling productivity decreased 17.16%; (4) Felling efficiency  increased approximately  3.2%;  (5) Felling cost increased about Rp 327.07 /  m; and (6) in average stump height was 40.60 cm lower.
GENETIC VARIATION OBSERVED IN COMPOSITE SEEDLING SEED ORCHARD OF Acacia mangium Willd. AT CENTRAL JAVA, INDONESIA : IMPLICATIONS FOR INCREASING GENETIC GAIN AND SEED PRODUCTION Nirsatmanto, Arif
Indonesian Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2012.9.2.91-99

Abstract

As part of multiple-population breeding scheme using sub-lining system, a composite seedling seed orchard of was established at Central Java, Indonesia. The orchard comprises a combination of the best 40 plus tree families selected from four sub-lines in the first-generation of Acacia mangium progeny trial. The design of orchard is randomized complete block laid-out as four line tree-plot of six replications with a spacing of 2 x 4 meter. Variation among sub-lines and families within sub-line, andgenetic parameters for height, dbh and volume were investigated at age of 24 months. The aim of this study was to investigate genetic variation for growth traits in a composite seedling seed orchard and todiscuss the implication for increasing genetic gain and seed production. In general, trees derived from two sub-lines of Papua New Guinea (PNG) provenance showed better growth than those from Far North Queensland, Australia (FNQ). Analysis of variance revealed significant differences among sublines and families within sub-line for height, dbh and volume. Variation of the traits among families within sub-line accounted for 1.1% to 5.0%, and trees within family 43.8% to 65.8%. Heritability varied from 0.044 to 0.201 for individual, 0.060 to 0.229 for within-family and 0.098 to 0.383 for family. Withinfamily selection promoted high genetic gain for all traits, ranging from 1.3% to 4.4%. In order to increase genetic gain and seed productivity, it is recommended that:(1) the best plus trees included in the orchard should be selected based on their progeny test, (2) the design of plot size should be single treeplot, (3) the final density of seed trees should be twice greater than the number of trees intended forseed collection, which is about 300 trees per hectare.

Page 16 of 50 | Total Record : 498

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