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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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THE POSSIBILITY OF USING TIMBER FROM PLANTATION FOREST TREATED WITH PLASTIC AND CCB FOR MARINE CONSTRUCTION Muslich, Mohammad; Hadjib, Nurwati
Indonesian Journal of Forestry Research Vol 5, No 1 (2008): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Recently, timber  estate or plantation forest plays an important role on wooden based industries.  However, the  plantation timber  quality is relatively low.  Some treatments  have been developed to improve  its low quality, such as preservation with CCB (Chromate Copper Boron) and impregnation with plastic compounds. This study is to compare the durability of timber treated with  plastic and CCB,  non-treated from plantation forest timber  as well  as from natural  forest. The plantation timber  studied were  jeungjing  (Paraserianthes falcataria), damar  (Agathis sp.), pinus  (Pinus merkusii), and rubberwood (Hevea brasilliensis). Non-treated timbers that usually used for marine construction were ulin (Eusideroxylon zwageri), jati/teak  (Tectona grandis), laban (Vitex pubescens) and merbau  (Instia bijuga). After  6 and 12 months,  the results showed that CCB  preserved  timber  were  more durable  than plastic  impregnated timber  and non- treated timber. Wood samples were mostly attacked by marine borer organisms from the family of  Pholadidae  and Teredinidae. The experiment results revealed the possibility of using those plantation forest timber species for marine construction purposes.
EARLY WARNING OF RAINFALL-INDUCED LANDSLIDES AND DEBRIS FLOWS ON MT. BAWAKARAENG, SOUTH SULAWESI,INDONESIA Hasnawir, Hasnawir
Indonesian Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Rainfall thresholds that form the basis of the landslide warning systems now exist for a few areas in Indonesia. Based on analysis of historical data, threshold performance varies according to precipitation characteristics,  and threshold  exceed corresponds  to a given probability  of  landslide occurrence. Early warnings of landslides and debris flows that include specific information about affected areas, probability of landslide and debris flow occurrence, and expected timing are technically feasible as illustrated by a case study made on Mt. Bawakaraeng, South Sulawesi, Indonesia. Records from 1997 to 2007 of rainfall data and history of landslides and debris flows were collected from the Ministry of Public Works of the government of Indonesia. The threshold, as defined by the lower boundary of the points representing landslides and debris-triggering rainfall events, is expressed by the equations I= 41.85D-0,85  before the large scale landslide on March 26, 2004 and I = 37.71D-0,90after the large scale landslide, where I is the rainfall intensity (mm/hr) and D is the duration of rainfall (hr). According to empirical threshold analysis, the regression curve can be considered as a reliable rainfall intensity- duration threshold for the study area, above which, landslide or debris flow event may occur.
EXPLORING THE ROLE OF FORESTRY SECTOR ON ECONOMIC SYSTEM OF GUNUNGKIDUL DISTRICT IN 1993 - 2008 Rahmat, Mamat; F., Takahiro; Sato, Noriko
Indonesian Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

This study was conducted to explore the role of forestry sector in the economic system of Gunungkidul district. The Location Quotient (LQ) Analysis, Income Multiplier Effect Value, and Klassen Typology Analysis were employed to analyze the role of the forestry sector. The data were regional income of Gunungkidul district and Yogyakarta Province from 1993 to 2008, including the economic crisis period from 1997 to 1998. The result showed that forestry sector was an important sector in economic development of Gunungkidul district. LQ analysis indicated that forestry became a basic sector since pre-economic crisis period until post-economic crisis (1993 - 2008). Prior to the economic crisis, forestry sector generated the highest income multiplier effect value. However, the value dropped during and after the economic crisis. The economic crisis had an influence on the development pattern classification of forestry sector. Before economic crisis, forestry sector was classified as a developed sector (quadrant I) with the growth and shared to GDRP in Gunungkidul were higher than that in Yogyakarta Province. Meanwhile, since the economic crisis, forestry sector fell into the lower class as a stagnant sector.
ECOLOGICAL CONDITIONS AND DISTRIBUTION OF GEMOR TREE SPECIES IN CENTRAL AND EAST KALIMANTAN Adinugroho, Wahyu C.; Sidiyasa, Kade; Rostiwati, Tati; Syamsuwida, Dida
Indonesian Journal of Forestry Research Vol 8, No 1 (2011): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

The aim of this study was to determine the ecological conditions and distribution of gemor bark producing tree species at Tuanan village in Kapuas District, Central Kalimantan Province and Long Daliq village in Kutai Barat, East Kalimantan Province. In order to collect adequate vegetation data, several obser vation plots were laid out by using purposive sampling. Primary and secondary data were collected from the plot areas by obser ving directly the habitat and its ecological condition of vegetation. It was revealed that the gemor tree species tended to grow well on the habitats which have a thin layer of peat (< 2 m), pH 3 – 4 and in a humid climatic condition.  Two gemor bark producing tree species were identidfied in the study areas, namely Nothaphoebe coriacea (Kosterm.) Kosterm. and  N. umbelliflora Blume. The similarity level of vegetation composition at both sites (Kapuas and Kutai Barat Districts) was low. The tree species richness in the plot areas of Tuanan in Kapuas District, Central Kalimantan (82 species, 57 genera and 28 families) was higher than that found in Long Daliq, Kutai Barat District, East Kalimantan (38 species, 26 genera and 19 families).
GROWTH-PROMOTING PROPERTIES OF BACTERIA ISOLATED FROM RHIZOSPHERE AND RHIZOPLANE OF DIPTEROCARP PLANTS ON ACIDIC LOWLAND TROPICAL PEAT FOREST IN CENTRAL KALIMANTAN, INDONESIA Sitepu, Irnayuli R.; Hashidoko, Yasuyuki; Santoso, Erdy; Tahara, Satoshi
Indonesian Journal of Forestry Research Vol 6, No 2 (2009): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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FOREST RESOURCES UTILIZATION VALUE OF THECOMMUNITIES LIVING IN AND AROUND GUNUNG LUMUT PROTECTION FOREST, EAST KALIMANTAN Murniati, Murniati; Padmanaba, Michael; Basuki, Imam
Indonesian Journal of Forestry Research Vol 5, No 2 (2008): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

FIBER QUALITIES OF PRETREATED BETUNG BAMBOO (Dendrocalamusasper) BY MIXED CULTURE OF WHITE-ROT FUNGI WITH RESPECT TO ITS USE FOR PULP/PAPER Fatriasari, Widya; Damayanti, Ratih; Anita, Sita Heris
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Previous research on anatomical structures of pretreated large (betung) bamboo (Dendrocalamusasper) using single culture of white-rot fungi has been investigated, which revealed that the pretreatment caused the decrease in the Runkel ratioas well as the coefficient rigidity and the increase in the flexibility ratio of their corresponding bamboo fibers. However, there is no study reported on the anatomical structure changes of them caused by pretreatment using mixed culture of white-rot fungi. This paper reports the results of the research on paper/pulp quality after different treatments. Pretreatment that used Trametes versicolor fungi and lasted for 45 days inflicted intensive fiber damages compared with those of untreated bamboo (control). Fresh and barkless large (betung) bamboo chips of 2 years old, and 1.6 cm in length, were inoculated by 10% of mixed culture of white-rot fungi inoculums stock for 30 and 45 days in room temperature. There were four treatment groups of mixed culture, i.e T. versi color and P. ostreatus (TVPO); P. ostreatus and P. chrysosporium (POPC); P. chrysosporium and T.versi color (PCTV); and P.chrysosporium,  T.versicolorand  P.ostreatus  (TVPCPO).After  the  inoculation  period,  the  chips  weremacerated into separate fibers using Scultze method to analyze the fiber dimension and its derived values. The fibers were then observed regarding their macro and microscopic structures by optical microscope. Mixed culture pretreatment of white-rot fungi accelerated improvement of fiber morphology and fiber derived value characteristics, except for Muhlsteph ratio. The fiber derived values oftreated bamboo tended to improve compared to those of untreated bamboo, there by requiring milder pulping conditions. Accordingly, the treated bamboo would indicatively produce a good quality pulp (grade I) based on FAO and LPHH (Forest Product Research Report) requirements. Co-culture treatment using P. chrysosporium and P. ostreatus for 45 days produced the best fiber dimension and its derived value properties. The fungi hypae colonized on the surface area of  bamboo followed by mycelium penetration into substrate (bamboo-inner structure). The partial degradation caused by delignification indicatively attributed to the fungi activity was shown in the macroscopic images.
PHYSIOLOGICAL CHARACTERISTICS RELATED TO CARBON SEQUESTRATION OF TREE SPECIES IN HIGHLAND FOREST ECOSYSTEM OF MOUNT HALIMUN-SALAK NATIONAL PARK Hidayati, Nuril; Mansur, M.; Juhaeti, Titi
Indonesian Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Biological diversity can have significant contribution to reduce the build-up of greenhouse gases in the atmosphere. The trees in a forest stand form an essential part in the functioning of the terrestrial biosphere, especially in the carbon cycle. Yet tree photosynthesis is far less studied than crop photosynthesis for several reasons: the large number of species; difficulty in measuring photosynthesis of entire trees or of forest stands. This research aims to assess the contribution of biological diversity in carbon sequestration by analyzing the physiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyll content) of species native to tropical highland forest ecosystem of Mount Halimun-Salak National Park. The results showed that there was a wide range of variation of CO2 assimilation rate between tree species. The overall CO2 absorption rate ranged 1.1913 - 31.3875 µmolm-2 s-1, the highest rate was reached by Lithocarpus sp. (pasang parengpeng) (31.3875 µmolm-2 s-1)followed by Litsea noronhae(huru lumlum) (21.5750 µmolm-2 s-1), Saurauia nudiflora (kilebo) (11.8175 µmolm-2 s-1), Vernonia arborea (hamirung) (6.7125 µmolm-2 s-1) and Litsea.sp. (huru bodas) (6.2725 µmolm2 s-1). The rate of CO assimilation was affected by incident radiation and thus the photon flux (Q leaf). Correlation between CO assimilation and Q leaf under certain environmental condition was considerably high. Incident radiation and Q leaf also affected stomatal conductance and thus rate of transpiration.
POTENCY OF BIOCONTROL AGENTS ISOLATED FROM COMPOST AND PEAT SOIL OF TROPICAL PEAT SWAMP FOREST IN KALAMPANGAN ZONE, CENTRAL KALIMANTAN Yuliar, Yuliar; Abidin, Zaenal; Mangunwardoyo, Wibowo
Indonesian Journal of Forestry Research Vol 8, No 2 (2011): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Rhizoctonia solani is a soil pathogen that causes diseases in wide range of hosts of agricultural, horticultural and flower crops. Biological control is the most promising way for the diseases management and it is environment friendly too. The objective of this study was to isolate and screen the potency of soil bacteria as biological control from various local compost and peat soil of tropical peat swamp forest in Kalampangan Zone, Central Kalimantan. Forty seven isolates from peat soil and compost were screened for biocontrol agent of Rhizoctonia solani . R. Solani Seven out of thirteen peat soil isolates, and six out of thirty three compost isolates showed antagonistic activity against in Potato Dextrose Agar. The cultivation of the antagonistic isolates in Trypticase Soy Broth (TSB) was extracted and analysed by high performance liquid chromatography (HPLC) column. The HPLC analyzes indicated that the antagonistic isolates produce an antifungal iturin A. Macroscopic observation of isolates colonies showed that form of their colonies were amuboid, myceloid, curled, circular, rhizoid, irregular and filamentous. These achievement indicate peat swamp forest not only offer a potential biocontrol agents of damping off but also provide a new source for production of antibiotics.
EFFECTIVENESS OF A SUPERFICIAL TREATMENT USING BIFENTHRIN TO PROTECT RADIATA PINE FRAMING FROM DAMAGE BY SUBTERRANEAN AND DRYWOOD TERMITES IN INDONESIA Sukartana, Paimin; Creffield, Jim W.; Ismanto, Agus; Lelana, Neo E.; Rushelia, Rusti
Indonesian Journal of Forestry Research Vol 7, No 1 (2010): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Various experimental testing procedures were undertaken in Indonesia to determine the effectiveness of a patented superficial (envelope) treatment using bifenthrin to protect radiata pine framing material from damage by two species of subterranean termites (Macrotermes gilvus and Coptotermes curvignathus) and one species of drywood termite (Cryptotermes cynocephalus). Lengths of framing material (Pinus radiata sapwood) were commercially treated to the targeted retention of 0.02% m/m of bifenthrin in the outer 2 mm depth penetration zone of the material. The treated and untreated materials were subsequently cut into test specimens and exposed to M. gilvus in the field and a semi-laboratory trial, to C. curvignathus in the laboratory and a semi-laboratory trial and to C. cynocephalus in a laboratory trial. No supplementary treatment was performed on the exposed cut ends of the treated test specimens. The results from the trials clearly demonstrated that the superficial treatment of bifenthrin seemed effective in protecting test specimens of radiata pine framing material from significant damage by Indonesia’s most notorious termite species that often causes serious economic loss to the timbers. Termites were unable to damage any of the bifenthrin-treated surfaces of test specimens. Any obser ved damage by termites, albeit minor, was in all cases confined to the exposed cut ends of test specimens. In contrast, attack by termites on the untreated control test specimens caused damage of the samples ranging from light to heavy.

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