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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 20 Documents
 1   2 
Search results for , issue "Vol 2, No 1 (2015): Indonesian Journal of Forestry Research" : 20 Documents clear
SOIL ORGANIC MATTER DYNAMICS UPON SECONDARY SUCCESSION IN IMPERATA GRASSLAND, EAST KALIMANTAN, INDONESIA Yassir, Ishak; Buurman, Peter
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.43-53

Abstract

Soil organic matter (SOM) dynamics upon secondary succession in Imperata grassland was studied by stable carbon isotope analysis. The data of litter and soil samples of twenty plots in four different stages of successions were compared. These different stages were represented by plots that were; (1) burnt 3 years before sampling/observation (Imperata grassland), (2) burnt 9 years before sampling /observation, (3) secondary forest (≥15 years) and (4) primary forest. The results showed that isotopic signatures of all soil horizons of the regeneration stages were statistically different from those of the primary forest. The A-horizon under the 3-years Imperata plot still contained 23% forest (C3) carbon, and this fraction increased to 51% in the-B-horizon. In the 9-years plot and in the secondary forest, the C3 carbon in the A-horizon increased to 51% and 96%, respectively.  In the topsoil, the loss of C4-C between the 3-years and the 9-years plot was significant, while it appeared negligible in the AB-horizon. The strong decay in the topsoil under Imperata grassland may be due to the rather high carbohydrate content of the SOM, which is considered easily decomposable. Further research is needed especially to explore the relation between carbon stocks and chemical composition of SOM. Such insight may help to better understand and predict soil carbon changes in relation to climate and vegetation change.
PHOTOSYNTHETIC RESPONSES OF Eucalyptus nitens Maiden AT INITIAL STAGES OF ROOT-ROT INFECTION Agustini, Luciasih; Beadle, Chris; Barry, Karen; Mohammed, Caroline
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.9-20

Abstract

Photosynthetic responses associated with initial stages of root-rot disease have been studied through setting up an artificial inoculation of Eucalyptus nitens trees with a root-rot pathogen, Armillaria luteobubalina. Trees were inoculated with two different strains of A. luteobubalina. Root systems were either wounded or left intact before inoculation. Three photosynthetic parameters, i.e. photosystem II yield (Fv/Fm), chlorophyll content and photosynthetic rate (Amax) were assessed during six-months of observation. Photosystem II yield was the most sensitive to root-rot infection. A significant difference in Fv/Fm between the unwounded control (UW-P0) and other treatments was observed, and the difference  was  affected by interaction between time and treatment factors (F- ratio = 3.798, p-value = 0.005).  Chlorophyll content and photosynthetic rate (Amax) decreased for all trees, including controls, during the period of the experiment. The decrease was more marked in treated than control trees, and the changes more determined by the time factor  (p-value <0.0001). The root systems of inoculated trees were examined and re-isolations of A. luteobubalina from symptomatic roots were carried out to confirm infection with A.luteobubalina of E. nitens trees. This preliminary trial was successful and did indicate that there were detectable physiological changes associated with early infection of root-rot. However the experiment required a longer duration for more widespread physiological changes to be detected.  
CENTRAL KALIMANTAN’S FAST GROWING SPECIES: SUITABILITY FOR PULP AND PAPER Adi, Danang Sudarwoko; Wahyuni, Ika; Risanto, Lucky; Rulliaty, Sri; Hermiati, Euis; Dwianto, Wahyu; Watanabe, Takashi
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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 (624.734 KB) | DOI: 10.20886/ijfr.2015.2.1.%p

Abstract

Fast growing wood species could be promising to fulfill the gap between wood demand and supply. Due to their low quality, the utilization of fast growing wood species has been limited to pulp and paper. Our previous study on the fiber characteristic and density of the 30 unutilized fast growing wood species from PT Sari Bumi Kusuma, Central Kalimantan, showed that there were five species which could be promising as pulp and paper material. These wood species have fiber lengths of more than 2200 µm. This research was conducted to get information another property of the five woods to more discover their potential utilization, especially for pulp and paper material. The wood species investigated were Endospermum diadenum, Dillenia sp., Adinandra dumosa, Adinandra sp., and Nauclea junghuhnii. The results showed that these five species have a long of fiber length, which are classified in Class I, low to medium density, fiber derived value which the total score felt in the class I. The chemical compositions showed that extractive, holocelullose, α-cellulose, and lignin contents were 1.74-4.12%, 62.73-73.83%, 37.24-46.97%, 29.68-38.92%, respectively. Based on fiber characteristic, density, and chemical properties, these five species could be used as an alternative raw material for pulp and paper industries. 
LEAF AREA INDEX DERIVED FROM HEMISPHERICAL PHOTOGRAPH AND ITS CORRELATION WITH ABOVEGROUND FOREST BIOMASS Basuki, Tyas Mutiara
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.%p

Abstract

Leaf area index (LAI) is one of key physical factors in the energy exchange between terrestrial ecosystem and atmosphere. It determines photosynthesis process to produce biomass and plays an important role in performing forest stand reflectance, therefore building relationships between LAI and biomass from field measurement can be used to develop allometric equations for biomass estimation. The purposes of this research are: 1). To develop relationships between diameter at breast height (DBH) and crown biomass (leaves; leaves + twigs + branches;  2).To develop relationships between leaf area index (LAI) and crown biomass; LAI and Total Above-ground Biomass (TAGB). A destructive sampling was conducted to build allometric equations. The DBH measurements from 52 sample plots were used to build relationships between DBH and crown biomass, as well as LAI and crown biomass and also TAGB. A hemispherical photograph was used to record LAI. The research was carried out in East Kalimantan. The results showed that strong coefficient of determinations (r2) were found between natural logarithmic (ln) DBH and crown biomass ranging from 0.77 to 0.93. The correlations (r) between LAI and leaves; leaves+twigs+branches; TAGB were arround 0.75 and the r2 were 0.564; 0.570; and 0.572, respectivelly.  Although LAI measuremnt using hemispherical is considered tedious, however the results are useful for validation of LAI measueremnts using remote sensing techniques. Improvement of r2 between LAI and biomass can be conducted by proper time of LAI measurement, immediately after sunrise or sunset.
CENTRAL KALIMANTAN’S FAST GROWING SPECIES: SUITABILITY FOR PULP AND PAPER Danang Sudarwoko Adi; Ika Wahyuni; Lucky Risanto; Sri Rulliaty; Euis Hermiati; Wahyu Dwianto; Takashi Watanabe
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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 (624.734 KB) | DOI: 10.20886/ijfr.2015.2.1.21-29

Abstract

Recent studies of  fast growing species grown in PT. Sari Bumi Kusuma, Central Kalimantan, show that based on their fiber dimensions there are five species, namely Endospermum diadenum, Dillenia spp., Adinandra dumosa, Adiandra sp., and Nauclea junghuhnii with good potential for pulp and paper production.  The fiber length of  those five wood species are was more than 2,200 µm on average. This paper studies the physical properties, fiber dimensions and their chemical contents to predict the paper and pulp quality. The result shows that all of  the species were classified in the medium to high density category. All species were classified into the first class quality for pulp and paper. Based on chemical contents, Dillenia sp. is the most suitable species due to its high value of  holocellulose and a-cellulose, low lignin content, and its fiber length is about 3,119 µm on average. A. dumosa also has good opportunities because it had the longest  fiber lengths (3,137 µm on average) and high value of  holocellulose, even though it has the highest lignin content. While Nuclea junghuhnii is  less suitable due to low values of  holocellulose and a-cellulose.
PHOTOSYNTHETIC RESPONSES OF Eucalyptus nitens Maiden AT INITIAL STAGES OF ROOT-ROT INFECTION Luciasih Agustini; Chris Beadle; Karen Barry; Caroline Mohammed
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.9-20

Abstract

Root-rots are known to be latent diseases that may be present in plants for an extended period without any noticeable expression of  symptoms above ground. Photosynthetic responses of Eucalyptus nitens saplings artificially inoculated with the root-rot pathogen, Armillaria luteobubalina were examined to characterize the initial stages of  root-rot infection. This paper studies three photosynthetic parameters, i.e. photosystem II yield (Fv/Fm), chlorophyll content and photosynthetic capacity (Amax) for two strains of  A. luteobubalina over a seven-month period. Root systems were either wounded or left intact before inoculation. A significant difference was observed in the Fv/Fm ratio between the uninoculated control and inoculated saplings. Photosystem II yield was considered the most sensitive parameter for the early detection of  root-rot disease. Chlorophyll content and Amax decreased for all trees, including controls, during the period of  the experiment, and most likely reflected host responses to seasonal change rather than treatment effects. Fungal re-isolations from symptomatic roots of  inoculated trees confirmed the presence of  A. luteobubalina. Findings from this preliminary trial indicated that there were detectable physiological changes associated with early infection of  root-rot. However, to detect more widespread physiological changes an experiment  of  longer duration is needed.
LOW CARBON DEVELOPMENT STRATEGY ON LAND USE SECTOR IN CILIWUNG MIDDLE-STREAM WATERSHED Gamma Nur Merrillia Sularso; Rudy P. Tambunan; Andreo W. Atmoko
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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 (1263.16 KB) | DOI: 10.20886/ijfr.2015.2.1.55-69

Abstract

The second (2nd) and third (3rd) segment of  Ciliwung middle-stream watershed land use have changed drastically over the past two decades. The second (2nd) and third (3rd) segment of  Ciliwung middle-stream watershed land use have changed drastically over the past two decades. This paper analyses the land use change from 1989-2012 and its impact on decreasing carbon stock or increasing CO2 eq emission, as well as to establish projected Reference Level (RL) to 2020. Best RL projection was used to establish the Low Carbon Development Strategy (LCDS) in both segments. The land use changing from 1989-2012 indicated a reduction of  green space area by 2,575.57 ha whereas the non-green space area increased by 2,575.57 ha. These changes decreases the carbon stock by 26,900 ton C and released CO eq emission by about 98,723 ton CO2eq. Population growth, demand on land and land constraints were found to be the driving factors of  land use changes in this area. Reference Level 2020 was established based on business as usual (BAU) and forward looking (FL) scenarios. The projection showed that FL was the best scenario which estimated carbon storage at 217,610 ton C in 2020. Low carbon development strategy directed to the area of  green space added up to 20% carbon storage through the implementation of  the strategy based on green space and non-green space which covered the areas from protection, supervision, extension or awareness and law enforcement.
LEAF AREA INDEX DERIVED FROM HEMISPHERICAL PHOTOGRAPH AND ITS CORRELATION WITH ABOVEGROUND FOREST BIOMASS Tyas Mutiara Basuki
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.31-41

Abstract

Leaf  area index (LAI) is one of  the key physical factors in the energy exchange between terrestrial ecosystem and atmosphere. It determines the photosynthesis process to produce biomass and plays an important role in performing forest stand reflectance. Therefore building relationship between LAI and biomass from field measurements can be used to develop allometric equations for biomass estimation. This paper studies the relationship between diameter at breast height (DBH) and leaves biomass, DBH and crown biomass (sum up of  leaves,  twigs and branches) as well as between LAI and leaves biomass; LAI and crown biomass; LAI and Total Above-ground Biomass (TAGB) in East Kalimantan Province. Destructive sampling was conducted to develop allometric equations. The DBH measurements from 52 sample plots were used as training data for model development (35 plots) and for validation (17 plots). A hemispherical photograph was used to record LAI. The result shows that strong corelation (r) exists between natural logarithmic (ln) DBH and crown biomass ranging from 0.88 to 0.98. The correlation (r) between LAI and biomass of  leaves; leaves + twigs + branches; TAGB were 0.742, 0.768 and 0.772, respectively.  Improvement of  (r) between LAI and biomass can be conducted by proper time of  LAI measurement, when the sky is uniformly overcast. 
SOIL ORGANIC MATTER DYNAMICS UPON SECONDARY SUCCESSION IN IMPERATA GRASSLAND, EAST KALIMANTAN, INDONESIA Ishak Yassir; Peter Buurman
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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.2015.2.1.43-53

Abstract

Soil organic matter (SOM) dynamics upon secondary succession in Imperata grassland was studied by stable carbon isotope analysis. The data of litter and soil samples of twenty plots in four different stages of succession were compared. These different stages were represented by plots that were; (1) last burned 3 years before sampling (Imperata grassland), (2) last burned 9 years before, (3) a secondary forest (≥15 years) and (4) a primary forest.  Result showed that isotopic signatures of all soil horizons of the regeneration stages were statistically different from those of the primary forest. The A-horizon under the 3-years Imperata plot still contained 23% forest (C3) carbon, and this fraction increased to 51% in the-B-horizon. In the 9-years plot and in the secondary forest, the C3 carbon on the A-horizon increased to 51% and 96%, respectively.  In the topsoil, the loss of C4-C between the 3-years and the 9-years plot was significant, while it appeared negligible in the AB-horizon. The strong decay in the topsoil under Imperata grassland may be due to the rather high carbohydrate content of the SOM, which is considered easily decomposable. Further research is needed especially to explore the relation between carbon stocks and chemical of SOM composition. Such insight may help to better understand and predict soil carbon changes in relation to climate and vegetation change.
ANALYSIS OF CHEMICAL COMPOUNDS DISTINGUISHER FOR AGARWOOD QUALITIES Gunawan Trisandi Pasaribu; Totok K. Waluyo; Gustan Pari
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): 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 (354.962 KB) | DOI: 10.20886/ijfr.2015.2.1.1-7

Abstract

Gaharu (Agarwood) is described as a fragrant-smelling wood that is usually derived from the trunk of the genus Aquilaria and Gyrinops (both of  the family Thymelaeaceae), which have been infected by a particular disease.  Based on Indonesian National Standard, agarwood can be classified into various grades, i.e. gubal gaharu, kemedangan and serbuk gaharu.  The grading system is based on the color, weight and odor.  It seems that such a grading is too subjective for agarwood classification.  Therefore, to minimize the subjectivity, more objective agarwood grading is required, which incorporates its chemical composition and resin content.  This research was conducted focusing on the analysis of  the particular grade of  agarwood  originating from West Sumatra.  The different types of  agarwood qualities are: kemedangan C, teri C, kacangan  C and super AB.  Initially, the obtained agarwood samples were grounded to powder, extracted on a Soxhlet extractor using various organic solvents (i.e. n-hexane, acetone, and methanol).  The agarwood-acetone extracts were analyzed using GC-MS to determine its chemical composition.  The results showed a positive, linier relationship in which the resin yield increased with the increase in agarwood quality grades. GC-MS analysis revealed that several sesquiterpene groups can be found in kemedangan C, teri C, kacangan C and super AB qualities. It is interesting that aromadendrene could be identified or found in all agarwood quality grades. Therefore, it is presumed that the aromadendrene compounds can act as an effective chemical distinguisher for agarwood, whereby the greater the aromadendrene content, the better is the agarwood grade.

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