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Indonesian Journal of Forestry Research
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Annals of the Indonesian Journal of Forestry Research 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.
Articles
414
Articles
SOCIAL CAPITAL IN MANAGING MANGROVE AREA AS ECOTOURISM BY MUARA BAIMBAI COMMUNITY

Situmorang, Rospita Odorlina

Indonesian Journal of Forestry Research Vol 5, No 1 (2018): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

The success of managing the natural environment by involving the community is strongly influenced by the local social conditions. This paper analyzes social capital inherent in the Muara Baimbai Community in Sei Nagalawan Village to manage the mangrove forest as an area valued for tourism. The study was conducted in Muara Baimbai Mangrove Area, Sei Nagalawan Village, Perbaungan District, Serdang Bedagai Regency on June until December 2014. Data were collected by observation, interview using a structured questionnaire, and in-depth interviews. The Muara Baimbai Community has strong social capital in managing the mangrove ecotourism area. An indicator of a strong social capital is a community institution which is run properly. The success of the community to rehabilitate the mangrove area in Sei Nagalawan and to utilise its resources in a sustainable manner is the result of high levels of participation of the members and the role of active cadres as symbolic power that encourage, drive, and motivate the community in their struggle. Strong motivation, fair work allocation and benefits among the members, strong internal connection, and wide external network are very important to strengthen social capital. Furthermore, the increasing welfare gained by the coastal community through increasing economic income, job opportunities, and knowledge are the benefits derived from the sustainable forest management that can maintain the existence of the community and their natural resource

NUTRITIONAL COMPOSITIONS OF SIX EDIBLE INSECTS IN JAVA

Kuntadi, Kuntadi, Adalina, Yelin, Maharani, Kun Estri

Indonesian Journal of Forestry Research Vol 5, No 1 (2018): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Nutritional deficiency is still a problem faced by many families in Indonesia. One of the important issues is the level of protein consumption that is still below the minimum required standard. Edible insects could be one alternative of protein sources  since their availability in the nature is quite abundant. This paper analyses six edible species of both cultivated and wild insects for its proximate compositions to measure their nutritional value. The cultivated insects consist of cricket (Gryllus sp.), giant mealworm (Zophobas morio F.), yellow mealworm (Tenebrio molitor L.), and silkworm (Bombyx mori L.), and the wild insects consist of javanese grasshopper (Valanga nigricornis Burm.) and paddy locust (Nomadacris succincta L.). Results shows that the nutritional composition of insects varies widely. Each 100g of dry weight contains of 32.59-76.69% of protein, 6.9-29.47% of fat, 0.92-30.76% of carbohydrate, 2.80-5.79% of ash, 407.34- 517.50 kcal of energy, and minerals about 24.82-31.22 mg of calcium (Ca) and 3.15-4.1 mg of iron (Fe). Some species such as grasshoppers, silkworm pupae and crickets have high protein content which potentially can be utilized as an alternate protein sources to fight against malnutrition and to increase nutritious food consumption. Efforts should be made to encourage the consumption of edible insects as an alternative source of protein. It is especially important to those who live in and around the forest, since the forest area is an excellent habitat for various species of insects.

TREE SPECIES COMPOSITION OF 1.8 HA PLOT SAMBOJA RESEARCH FOREST: 28 YEARS AFTER INITIAL FIRE

Rahayu, Subekti, Basuni, Sambas, Kartono, Agus Priyono, Hikmat, Agus, van Noordwijk, Meine

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Repeated forest fires highly impact on tree species composition. Forest planning requires information about the current condition of  species composition. This paper investigates the current tree composition of  natural regeneration after repeated forest fires,  regeneration process after repeated fires, and strategy of  secondary growth related to ecological restoration issues. Re-observation of  the 1.8 hectares permanent plot in Samboja Research Forest was conducted in 2011. All trees with diameters above 10 cm at breast height (DBH) were re-numbered and mapped. Herbarium specimen was collected for species identification. Number of  taxon was determined, Important Value Index was calculated, species trait of   light response was identified based on the references and dispersion index species was calculated. Results show after twenty eight years initial forest fire, 191 species naturally regenerated in the burnt area. Macaranga gigantea, a light demanding pioneer species of  Euphorbiaceae was the most dominant species, followed by Vernonia arborea belonging to Asteraceae. Both, M. gigantea and V. arborea had clumped distribution. Eight species identified survived from repeated fires, are Anthocephalus chinensis, Dipterocarpus cornutus, Diospyros borneensis, Eusideroxylon zwageri, Shorea ovalis, Syzygium borneensis, Pholidocarpus majadum and Vatica umbonata. All surviving species was distributed uniformly in the plot. Dominant pioneer species which has grown after repeated fires indicates that the current condition of  burnt forest is in the early succession. Protecting forest, assisting natural regeneration and monitoring dominant species are suggested as activities for the ecological restoration.

CORRELATION ANALYSIS BETWEEN SEAWATER INTRUSION AND MANGROVE GREENBELT

Hilmi, Endang, Kusmana, Cecep, Suhendang, Endang, Iskandar, Iskandar

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Seawater intrusion is an entry process of  seawater to land. Many factors have caused seawater intrusion from freshwater exploitation until mangrove degradation.  Mangrove ecosystem is a type of  forest ecosystem which has an ability to reduce seawater intrusion. This paper analyzes the estimation  and prediction of  seawater intrusion and correlation between widths of  mangrove with seawater intrusion.   The relation analysis between the width of  mangrove greenbelt with seawater intrusion used an equation model to predict seawater intrusion. The research method used sampling technique, system analysis with powersim software, correlation analysis and mathematical method with trend line analysis. Results show that (1) the mangrove density in the coastal area is approximately 50 – 109 trees/ha. (2) Simulation results showed seawater intrusion rate was about 0.20 km year (with mangrove as a component system), but reached 0.3 – 0.4 km/year (without mangrove as a component system). (3) The simulation result also showed that freshwater salinity was estimated to increase from 1.92 ppt to 4.86 ppt. (4) The relation model between seawater intrusion and mangrove greenbelt showed that correlation coefficient was 0.97 with  the equation  seawater intrusion (m) = 2264.9 * exp (-0.009 * the width of  mangrove greenbelt (m)), the correlation of  mangrove width with seawater intrusion was 0.97. (5) Avicennia marina, Avicennia alba, Rhizophora styllosa, Sonneratia alba and Sonneratia caseolaris were the mangrove species that had the best ability to reduce seawater intrusion.

GENETIC DIVERSITY AND GENETIC RELATIONSHIP OF SENGON (Falcataria moluccana) REVEALED USING SINGLE NUCLEOTIDE POLYMORPHISM (SNP) MARKERS

Yuskianti, Vivi, Shiraishi, Susumu

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Producing seeds in seed orchards that retain a broad genetic diversity is important for the continued development of a species. The aim of this study was to find out the genetic diversity of, and genetic relationships between several populations of sengon (Falcataria moluccana) in the Candiroto seed orchard in Indonesia. Analysis using  twelve single nucleotide polymorphism (SNP) markers showed that the total population had a high level of genetic diversity (He = 0.359±0.128); the Wamena population in Papua had the highest level. The close genetic relationship between this and the population from East Java suggested that the latter may have been introduced from Wamena. There was also a close genetic relationship between the populations from Central and West Java and that from Mindanao Island in The Phillipines. The high genetic diversity  of sengon in the Candiroto seed orchard provides a good basis for selection and breeding.

STAKEHOLDERS’ PERCEPTION ON MANAGEMENT OF UPSTREAM CILIWUNG WATERSHED: IMPLICATIONS FOR FOREST LANDSCAPE PLANNING

Alviya, Iis, Muttaqin, Muhammad Zahrul, Suryandari, Elvida Yosefi, Maryani, Retno

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Forests play a vital role for the livelihoods of rural and urban communities. Addressing perception of forest users regarding forest practices is one of the most important aspects of forest management. This paper aims to elaborate stakeholders’ perception on the biophysical, socio-economic and institutional aspects of forest landscape management in upstream Ciliwung watershed.  Data were collected through survey, by highlighting preferences, perceptions, and expectations of actors who are interested in the impacts of watershed management.  This study indicates that communities at upstream Ciliwung watershed area perceived that the socio-economic aspect is the most important factor in managing upstream Ciliwung watershed.  The governments (central and local), however, pay more attention to the biophysical and institutional aspects. The result of the overall perception analysis shows that institutional aspects need to be addressed first, followed by socio-economic aspects and biophysical aspects to improve the management of upstream Ciliwung watershed.  Addressing institutional aspects is needed to enhance awareness and coordination among stakeholders, to enforce law and to develop a monitoring system to support the preservation of the forest at the upstream watershed areas. In terms of socio-economic aspects, improving community livelihoods is needed through payments for environmental services. Regarding biophysical aspects, afforestation and conservation of soil and water need to be prioritised. Thus, there should be programs that could provide solutions based on the three main aspects to improve the management of the forest resources in the upstream watershed area.

DEMAND ANALYSIS OF INDONESIAN PULPWOOD USING TRANSCENDENTAL LOGARITHMIC MODEL: A STUDY OF THE WORLD AND SELECTED ASIAN MARKETS

Simanjuntak, Gunawan Ganda Tua Petrus, Lin, Chingyang

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Indonesia’s pulpwood export has shown an increasing trend since 1990s. Along with Brazil, Canada, USA and Chile, Indonesia became one of  the top five pulpwood exporter countries in the world. Indonesia’s pulpwood was traded mainly to some Asian countries. This paper examines Indonesian pulpwood export demand during the period  1994-2014 using a Transcendental Logarithmic (TL) model with Seemingly  Unrelated Regression (SUR) estimation. Export data from the five top exporter countries in four different markets (China, Korea, Japan and the world) were analysed. The important findings are as follow: firstly, logarithmic income and second order logarithmic income significantly influence the Chinese and Korean markets. Secondly, in general, Indonesia’s own-prices are elastic and have negative signs (-2.308, -1.06 and -2.04 in the Korean, Japanese and the world markets, respectively). Thirdly, due to its positive sign of  crossprice elasticity and also positive signs of  income elasticity (1.002, 1.722 and 0.625 in the Chinese, Korean and the world markets, respectively), Indonesian pulpwood could be categorized as a substitute and normal goods. Lastly, regarding to negative and elastic Indonesia’s pulpwood own-prices, one possible policy that could be applied by the Government of  Indonesia (GoI) is giving a subsidy to reduce pulpwood price by 10%. Subsidy could be implemented by reducing tax and retribution such as property tax (Pajak Bumi dan Bangunan) and local retribution (Retribusi Daerah). By doing so, it would give more benefit in the Korean market compared with other markets. Indonesia’s share of  demand would increase from 0.28 to 0.31 with high rate of  return (>2). On the world markets, Indonesia’s share of  demand would increase from 0.08 to 0.1 with a return rate of  1.89. This study, therefore, suggests that a subsidy policy should be implemented for pulpwood industry in Indonesia.

DYNAMIC PROJECTION OF CLIMATE CHANGE SCENARIOS ON TROPICAL TREES ABOVEGROUND CARBON STORAGE IN WEST PAPUA

Maulana, Sandhi Imam, Wibisono, Yohannes

Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Through photosynthetic activities, tropical forest ecosystems capture and store the most significant carbon emissions in the form of  biomass compared with other types of  vegetation, and thus play a highly crucial part in dealing with climate change. However, such important role of  tropical forest is very fragile from extreme changes in temperature and precipitation, because carbon storage in forest landscape is strongly related to those climate variables.  This paper examines the impacts of  future climate disturbances on aboveground carbon storage of  three tropical tree species, namely Myristica sp., Palaquium sp., and Syzygium sp. through “what if ” scenarios evaluation using Structural Thinking and Experimental Learning Laboratory with Animation (STELLA). Results highlighted that when the dynamic simulation was running with five IPCC’s climate change scenarios (Constant year 2000 concentrations, B1, A1T, A2, and A1F1) for 200 years simulation period, then moderate climate change scenarios occured, such as B1 and A1T, would have already caused significant statistical deviation to all of  those tree species. At the worst level of  A1F1, the 4°C temperature was coupled with 20% reduction in precipitation. Palaquium sp. showed the highest reduction of  aboveground carbon storage with about 17.216% below its normal value. This finding implies the negative climate feedbacks should be considered  seriously to ensure the accuracy of  long term forest carbon accounting under future climate uncertainty.

THEORETICAL FRAMEWORK FOR SPATIAL PLANNING AND FOREST MANAGEMENT IN INDONESIA: SECURING THE BASIC RIGHTS FOR ADAT PEOPLE

Nugroho, Hunggul Yudono Setio Hadi, van der Veen, Anne, Skidmore, Andrew, Hussin, Yousif A.

Indonesian Journal of Forestry Research Vol 4, No 1 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Limited transparency, accountability, and participation in policy formulation as well as implementation mainly based on economic considerations, all lead to failure to attain sustainable forest management (SFM).  Along with the reluctance of policy makers and lacking stakeholder capacity, less accurate data bases has also indicated a constraint in the development of appropriate action. The issues have been more complicated where they were correlated with economic imperatives, vested interest, ownership issues and the basic rights of indigenous communities living inside or adjacent the forest.  Forest destruction will be no end without securing customary  land and territorial rights.  To cope with these issues, the concept of fair governance has been promoted as an alternative to the traditional pattern of administration. In this paper, we propose a theoretical framework for policy development in order to attain SFM while respecting the rights of the adat people.  We show that adaptive governance, adaptive management, and participatory learning are strategic approaches in  governance reform to achieve sustainable forest management securing the customary rights and traditional land use of forest dependent people.

PERFORMANCES OF TWO PROTOTYPES OF LOG EXTRACTION TECHNIQUES USING THE SKYLINE SYSTEM

Endom, Wesman, Astana, Satria

Indonesian Journal of Forestry Research Vol 4, No 1 (2017): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Timber extraction from felling area to road side is not an easy job. This activity facing a number of  difficulties particularly due to geo-biophysical conditions, such as steep terrain, up and/or down-hill, valley or river-to be crossed, slippery road and also the size of the timber and low accessibility. To anticipate those obstacles two engineering designs of the skyline system had been tried, the so called Expo-2000 Generation-1, using gasoline engine of  6 HP (G-1), and Expo-2000 Generation-3 using dieselengine of  12 HP (G-3). G-1 model has been tested in Cimeong and Rancaparang in 2011. G-3 model has been examined in Cibatu Canjur and Cibaliung Banten in 2013. This paper evaluates the modification of skyline system for steep terrain and to compare the performance between two modified skyline systems, in term of productivity and cost. The data collected included working time, log volume extracted, log extraction distance and fuel used. Data were analyzed to get the average productivity and cost of operation. Result show that prototype G-3 with logs in horizontal position at a distance of  130-430 m, can extract logs averaging 1.72 m3/hr, at a cost of  about Rp 80,346/m3, while prototype G-1 and logs in vertical position at a  distance of  about 50-320 m, could only extract logs averaging ± 0.85 m3/ hr at a cost of about Rp 156,351/m3. It suggests that prototype Expo-2000 G-3 is more effective for log extraction logs in steep terrain.

Issues
All Issue Vol 5, No 2 (2018): Indonesian Journal of Forestry Research Vol 5, No 1 (2018): Indonesian Journal of Forestry Research Vol 4, No 2 (2017): Indonesian Journal of Forestry Research Vol 4, No 1 (2017): Indonesian Journal of Forestry Research Vol 3, No 2 (2016): Indonesian Journal of Forestry Research Vol 3, No 1 (2016): Indonesian Journal of Forestry Research Vol 2, No 2 (2015): Indonesian Journal of Forestry Research Vol 2, No 1 (2015): Indonesian Journal of Forestry Research Vol 1, No 2 (2014): Indonesian Journal of Forestry Research Vol 1, No 1 (2014): Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research Vol 9, No 1 (2012): Journal of Forestry Research Vol 8, No 2 (2011): Journal of Forestry Research Vol 8, No 1 (2011): Journal of Forestry Research Vol 7, No 2 (2010): Journal of Forestry Research Vol 7, No 1 (2010): Journal of Forestry Research Vol 6, No 2 (2009): Journal of Forestry Research Vol 6, No 1 (2009): Journal of Forestry Research Vol 5, No 2 (2008): Journal of Forestry Research Vol 5, No 1 (2008): Journal of Forestry Research Vol 4, No 2 (2007): Journal of Forestry Research Vol 4, No 1 (2007): Journal of Forestry Research Vol 3, No 2 (2006): Journal of Forestry Research Vol 3, No 1 (2006): Journal of Forestry Research Vol 2, No 2 (2005): Journal of Forestry Research Vol 2, No 1 (2005): Journal of Forestry Research Vol 1, No 1 (2004): Journal of Forestry Research