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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
 39   40   41   42   43 
DISCOURSE ANALYSIS OF DECENTRALIZATION POLICY MAKING PROCESS OF PROTECTED FOREST MANAGEMENT Sulistya Ekawati; Hariadi Kartodihardjo; Dodik Ridho Nurrochmat; Hardjanto -; Hariyatno Dwiprabowo
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.2.79-88

Abstract

”Decentralization of protected forest management from central to district government has not yet been implemented effectively. This effectiveness depends on many factors that include policy contents and political process or discourse in the policy making process. This study aimsto: 1) analyze the discourse in policy making process of decentralization in the management of protected forests, 2) analyze the actors/networks and their interests and 3) find out policy space for future policy reform. Both quantitative and qualitative approaches were used in the study. The results show that there are three discourses in the policy-making process of decentralized management of protected forests, namely: i) democratic discourse (with story line of externality and accountability, supported by an association forum of Indonesian district government and  decentralization experts); ii) economic discourse (with story line of efficiency, supported by businessmen, Association of Indonesian Provincial Government and World Bank); and iii) democratic and economic discourses. The House of Representatives (DPR) and Ministry of Home Affairs have authorities and capacities to integrate two discourses. Redefining of externality and interdependency can be used as narratives of new policies to improve the policy of decentralized protected forest management.
THE ECONOMIC VALUE OF HYDROLOGICAL SERVICES IN MENDALAM SUB WATERSHED, KAPUAS HULU REGENCY, WEST KALIMANTAN, INDONESIA Emi Roslinda; Yuliantini Yuliantini
Indonesian Journal of Forestry Research Vol 1, No 1 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

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.
GEOGRAPHIC VARIATION OF CHLOROPLAST DNA HAPLOTYPES IN Acacia aulacocarpa A. Cunn. ex Benth Anthonius Y.P.B.C. Widyatmoko; Susumu Shiraishi
Indonesian Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.1.43-56

Abstract

The geographic  variation  of chloroplast  DNA (cpDNA)  haplotypes  of Acacia aulacocar pa was investigated among 18 natural populations. These populations represent the geographical range of the species in New Guinea Island and Queensland. Single strand conformation polymorphism (SSCP) was used for the analysis. Two non-coding regions of cpDNA, the intron region of the trnL gene and the intergenic spacer region between the trnP and trnW genes, were analyzed, and four haplotypes (A, B, C, and D) were recognized. The haplotype distribution corresponded with the geographic distribution of the populations.  Based on four cpDNA haplotypes, the eighteen populations were divided into three groups: New Guinea Island, Northern  Queensland  and Southern Queensland.  Haplotype  C was observed only in the New Guinean populations, while the other three haplotypes (A, B, and D) were found in Queensland only. All of these three haplotypes were observed in Southern Queensland, whereas haplotype B was found only in the Northern Queensland populations. The cpDNA haplotype diversity of this species seemed to be highest in southern Queensland.
DEVELOPING SITE-SPECIFIC ALLOMETRIC EQUATIONS FOR ABOVE-GROUND BIOMASS ESTIMATION IN PEAT SWAMP FORESTS OF ROKAN HILIR DISTRICT, RIAU PROVINCE, INDONESIA Nunung Puji Nugroho
Indonesian Journal of Forestry Research Vol 1, No 1 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2014.1.1.47-65

Abstract

In forest biomass assessment studies, the selection or development of reliable allometric biomass equations is an essential step which determines largely the accuracy of the resulted biomass estimates. Unfortunately, only few studies on allometric biomass equations have been conducted for peat swamp forests and the results are usually not publicly accessible or well documented. Thus, the objective of this study was to develop site-specific allometric equations for above-ground biomass (AGB) estimations in tropical peat swamp forests in Indonesia. These equations were developed based on 51 destructively sampled trees. The results indicated that the developed site-specific allometric equations have coefficient of determination (R2) greater than 95%. The R2 values ranged from 97.0% to 98.7%, where the lowest R2 value resulted from the simplest model which used only DBH as a predictor. Model 5, which used DBH, H and ρ as predictive variables, provided best performance when estimating the AGB of the study area. Hence, as long as reliable data are available as input, Model 5 is recommended. The accuracy and applicability of the allometric equations for peat swamp forests could be improved further by adding more sampled trees from different tree species and/or with a wider DBH range. Considering the importance of wood density in the estimation of the AGB and the lack of this information for peat swamp forest tree species, research should be dedicated to analysing the wood density of the dominant tree species comprising the majority of the AGB density in the study area.
FIBER QUALITIES OF PRETREATED BETUNG BAMBOO (Dendrocalamusasper) BY MIXED CULTURE OF WHITE-ROT FUNGI WITH RESPECT TO ITS USE FOR PULP/PAPER Widya Fatriasari; Ratih Damayanti; Sita Heris Anita
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.2.89-99

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 year's 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.
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 Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.1.1-10

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.
TREND OF REALIZED GENETIC GAIN OBSERVED IN SECOND-GENERATION SEEDLING SEED ORCHARDS OF ACACIA MANGIUM IN SOUTH KALIMANTAN, INDONESIA Arif Nirsatmanto; Teguh Setyaji; Surip Surip
Indonesian Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.1.57-64

Abstract

Comprehensive  tree improvement  program for Acacia mangium has been started since 1992 by establishing  a  series  of  first generation  Seedling  Seed  Orchards  (SSO)  in  Indonesia.  Selection procedures in the first-generation of SSO have completely finished, and subsequently it was continued for second-generation improvement. This paper examines a trend of realized genetic gain as a response of selection practiced in the first-generation SSO. The observation was carried out in three sub-lines of the second-generation SSO (namely Sub-line B, C and D). Parameters recorded included tree height, diameter at breast height (dbh) and stem straightness that were recorded periodically up to 4 years growth. The realized genetic gain was calculated as a percentage of improved plus trees population in the first-generation of  SSO compared to those of  unimproved trees. The results showed that the improved population was consistently better that those of unimproved one until 4 years of age. There were variation in terms of realized genetic gain parameters recorded depending on the sub-lines and ages. The tree height varied from 1.1% to 5%, while dbh and stem straightness were in the ranges of 2.8% to 6.7% and from 1.8% to 8.4%, respectively. Across the three sub-lines, the tree height varied from 2.2% to 3.1%, while dbh and stem straightness were in the ranges of 4.3% to 5.2% and 4.3% to 6%, respectively.  In general, the trend of the realized genetic gains slightly decreased for dbh and tree height with the increasing of ages, while it slightly increased for stem straightness.
DECOLORIZATION OF AZO DYES AND MINERALIZATION OF PHENANTHRENE BY TRAMETES SP. AS03 ISOLATED FROM INDONESIAN MANGROVE FOREST Asep Hidayat; Sanro Tachibana
Indonesian Journal of Forestry Research Vol 1, No 1 (2014): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2014.1.1.67-75

Abstract

Textile industry contributes the most disposals of synthetic dyes, and about 40% of textile dyes has been generating high amount of colored wastewater. Polycyclic aromatic hydrocarbons (PAHs), such as phenanthrene, is a group of organic compounds, that structurally comprised of two or more benzene rings, which persist in air, water, and soil. The organic pollutants of dyes and PAHs have adversely effects the food chain and are potentially toxic, mutagenic, and carcinogenic to the environment. The objective of this research is to screen and investigate the potential fungus from mangrove forest to degrade azo dyes and phenanthrene.  In this study, fungi were collected from mangrove forest in Riau Province – Sumatra – Indonesia. Previously, Trametes sp. AS03 is one of the fungi isolated from mangrove forest in Riau Province, that was able to decolorize Remazol Brilliant Blue R (RBBR). The capability of Trametes sp. AS03 to decolorize four azo dyes, Remazol B. Violet (V5), Levafix Orange E3GA (Or64), Levafix B. Red E-6BA (R159), and Sumifix S. Scarlet 2GF (R222), were further evaluated. The result shows that Trametes sp. AS03 decolorized 91, 60, 48, and 31 of V5, R222, R159, and Or64, respectively. By showing its capability to decolorize some of the dyes, Trametes sp. AS03 was used to break down phenanthrene. AS03 degraded more than 70% of phenanthrene in 15 days.
EARTHWORM POPULATION AT THE POST COAL MINING FIELD IN EAST KALIMANTAN, INDONESIA Ardiyanto W. Nugroho; Septina A. Widuri; T. Sayektiningsih
Indonesian Journal of Forestry Research Vol 5, No 2 (2018): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.786 KB) | DOI: 10.20886/ijfr.2018.5.2.81-93

Abstract

Coal mining activities in Indonesia result in heavy soil degradation and significant decrease in earthworm population. This study aims to explore the population of earthworms at different ages of the plant in the post coal mining rehabilitation areas. PT. Kideco Jaya Agung, East Kalimantan. In this study, 5 samples (30 cm x 30 cm, 20 cm depth) of soil were collected from 5 rehabilitation sites. Sites were selected based on age after rehabilitation: 2, 4, 6, 8 and 10 years after replanting, and sampled with 20 m distances between samples to determine earthworm population. The depth of litter layer and species of plants were also recorded at each site. Chi square analysis was conducted to determine the significance of earthworm density in rehabilitation sites at different ages, while correlation analysis was conducted to determine correlation between litter thickness and the number of earthworms found in the research sites. Only 2 species of earthworms were found in this study; their abundance increased increased in line with the age of rehabilitation areas. The number of earthworms (density) at 10 years after rehabilitation was almost similar to that in the natural forests. In conclusion, planting tree species producing significant amount of litter might stimulate the earthworm community and initiate succession. It might also take more than 10 years to return to the previous state for the earthworms in terms of density after land rehabilitation of the coal mining areas is conducted.
ANATOMICAL PROPERTIES OF NINE INDIGENOUS RATTAN SPECIES OF JAMBI, INDONESIA Krisdianto Krisdianto; Jasni Jasni; Tutiana Tutiana
Indonesian Journal of Forestry Research Vol 5, No 2 (2018): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.475 KB) | DOI: 10.20886/ijfr.2018.5.2.147-161

Abstract

Various rattan species grow naturally in Jambi, Indonesia, i.e. opon (Plectocomiopsis geminiflora (Griff.) Beccari), udang (Korthalsia flagelaris Miquel), getah (Daemonorops micracantha (Griff.) Beccari), duduk (D. didymophylla Beccari), tunggal (Calamus laevigatus Martius), sijau (C. tumidus Furtado), buruk ati (C. insignis Griff. var. longispinosus Dransfield), batu (C. zonatus Beccari), and paku (C. exillis Griff.). The rattan species are classified as lesser known species, which its properties are unknown to rattan supplier and consumers. This paper observes the anatomical properties of nine indigeneous rattan species of Jambi. Anatomical observations were conducted from solid, sectioned and macerated samples. Results show that anatomical properties become a diagnostic characteristic for rattan species identification and specific characteristic has been developed for key species determination. Vascular bundles in the outer part of the stem of opon and udang rattans are yellow-capped. Width and length ratio of vascular bundle in the outer part is more than 1, oval shape was found in sijau rattan, while elongated shape vascular bundle with the ratio less than 1 was found in buruk ati. Fiber bundles separated from vessels are found in central ground parencymatous tissue of rattan tunggal. In the peripheral area, fiber bundle forms one or two lines with no specific pattern found in rattan paku, while fiber bundles in one line with alternate pattern found in rattan duduk. Single resin canals are found both in center part and peripheral area is found in batu rattan and mostly single. Resin canals are found in pair at getah rattan stem. Tentative identification key to rattan species has been developed for nine species investigated, then the key should be developed for further genera identification among rattan species in Indonesia.

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