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  • 170 documents, page 1 of 17

    EXPLORING THE ROLE OF FORESTRY SECTOR ON ECONOMIC SYSTEM OF GUNUNGKIDUL DISTRICT IN 1993 - 2008

    Mamat Rahmat; Takahiro F.; Noriko Sato (2012)
    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 ...

    THE CCB TREATMENT OF SIXTEEN INDONESIAN WOOD SPECIES AGAINST MARINE BORERS

    Muslich Mohammad (2006)
    T his study was conducted to provide basic information on the treatment of some wood species using a copper bichromated boron (CCB). The specimens were treated with CCB for 2 hours in a 150 psi of full cell process. The treated and untreated wood samples were tested against marine borers for 4, 8 and 12 months. The results indicated that full cell process with CCB were able to prevent marine borers attack. Untreated wood specimens were susceptible to marine borers attack, exce...

    ECONOMIC ASSESSMENT OF SOME AGRO FORESTRY SYSTEMS AND ITS POTENTIAL FOR CARBON SEQUESTRATION SERVICE IN INDONESIA

    L. Ginoga Kirsfianti; Cahya Wulan, Y; Lugina Mega; Djaenudin Deden (2004)
    This paper  provides  several alternatives  agroforestry  and plantation   systems  to consider  for carbon  sequestration  purposes.   It is indicated  that multicropping  of  coffee multistrata  or fruit trees such as mango,  duku and durian with timber or food and vegetable crops  produces  more benefits financially and economically compared  to monoculture  of tree plantation  such as albizia. The  former  system is more attractive in terms  of  return  to labour  and land.  However,  the...

    CHEMICAL COMPOSITIONS OF PINE RESIN, ROSIN AND TURPENTINE OIL FROM WEST JAVA

    Wiyono Bambang; Tachibana Sanro; Djaban Tinambunan (2006)
    This study was conducted to identify chemical composition of merkus pine resin, rosin and turpentine oil. Initially, pine resin was separated into neutral and acidic fractions with an aqueous 4% sodium hydroxide solution. After methylation, the fraction containing turpentine oil and rosin were analyzed by gas chromatography (GC), and gas chromatograph mass spectrometry (GC-MS), respectively. The neutral fraction of pine resin and turpentine oil mainly consisted of a-pinene, D-3-carene and b-p...

    STUDIES ON FUNCTIONAL BACTERIA OF INDONESIAN TROPICAL FOREST PLANTS FOR BIOREHABILITATION OF DEGRADED LANDS

    R. Sitepu Irnayuli; Hashidoko Yasuyuki; Aryanto Aryanto; Turjaman Maman; Tahara Satoshi; S. Miftahuliyah Siti; Santoso Erdy (2008)
    Forest degradations have left vast amount of damaged and abandoned lands in Indonesia. In this paper, we present our approaches in rehabilitation of adverse soils using functional bacteria isolated from plant species of Indonesian tropical rain forests. For these purposes, we collected bacteria from various bio-geo-climatically different forests and conducted bioassays to test these bacterial abilities in improving plant growth. Repeated seedling-based studies on Shorea spp., Al...

    PHYSICAL AND MECHANICAL PROPERTIES OF THREE POLYSTYRENE IMPREGNATED INDONESIAN WOOD SPECIES

    Nurwati Hadjib (2005)
    The disadvantage of fast-growing species is that they have inferior physical and mechanical properties. Polystyrene impregnation can be applied to improve physical and mechanical properties. Wood samples, which were dried until 10% moisture content were put into impregnating tank and vacuum pressured at 20-mm Hg for two hours. During the gradual release of vacuum, styrene monomers, vinyl acetate monomers and terburyl-peroxide catalyst was streamed into the tank. Afterwards, the ...

    ANTI FUNGAL ACTIVITY OF WOOD EXTRACT OF Aquilaria crassna Pierre ex Lecomte AGAINST AGARWOOD-INDUCING FUNGI, Fusarium solani

    Eka Novriyanti; Erdy Santosa; Wasrin Syafii; Maman Turjaman; Irnayuli R. Sitepu (2010)
    This paper provided information regarding artificial agar wood production. Fungi are considered as biological agent for agarwood formation and agarwood is assumed as tree defense mechanism product. This research was aimed at investigating the anti fungal activity (AFA) of Aquilaria crassna, one of the agar wood-producing trees, against Fusarium solani in vitro. Aquilaria crassna wood mill was extracted by 70% ethanol to investigate the anti fungal activity. The result are Aquilariacrassnaexhi...

    FLOWERING INTENSITY AND FLOWER VISITORS OF Santalum album L. AT EX-SITU CONSERVATION PLOT, WATUSIPAT, GUNUNG KIDUL, YOGYAKARTA

    Liliana Baskorowati (2011)
    Flowering intensity, insects visiting flowers and pollinators of S. album were determined in a study conducted in an ex-situ conservation plot, Watusipat, Gunung Kidul, Yogyakarta. Observations were undertaken during flowering season in 2009 and 2010, with an objective to determine the patterns of flowering and flower visiting insects of S. album in this population. In this study site, S. album typically flowers twice a year and reaches a peak on June and November. Flowers are visited by vari...

    THE ECONOMIC VALUE OF WATER FOR COMMERCIAL USE IN UPPER BRANTAS SUB-WATERSHED

    Fitri Nurfatriani; Zahrul Muttaqin (2008)
    This research was aimed at calculating the economic value of hydrological benefits associated with protecting forest in the upper Brsnts Sub-watershed. The hydrological benefit was limited to commercial uses of water from the forest which included:. tap/drinking water,hydropower generation, and industrial uses. The economic value was calculated using the full cost method in which the cost should be paid by all users gaining benefits. The calculated cost was futner used to determine a tariff f...

    PREDICTION OF TEAK BONITA (SITE INDEX) IN CENTRAL JAVA, INDONESIA, BASED ON SOIL PROPERTIES

    Chairil Anwar (2007)
    The objective of this study was to determine the most correlated soil and physiographic factor with the site index of teak. Tree height and stand age were recorded from seventy-three plots located in Central Java, Indonesia, to determine site index. Size of each plot was 0.1 ha. Measured site properties measured were percent slope, elevation, slope position, slope length, dominant topographic form, aspect, and thickness of A horizon. Soil samples from A and B horizon were analyzed for soil co...