Journal Jurnal Penelitian Kehutanan Wallacea

107 articles
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Resti Wahyuni, Triadiati Triadiati, Syamsul Falah
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 165-171; doi:10.18330/jwallacea.2018.vol7iss2pp165-171

Abstract:Aquilaria malaccensis is agarwood producing species in Indonesia. Agarwood compounds are formed as a chemical response of Aquliaria malaccensis tree to various physical damages, phatogen infection, or chemical treatment. Factors influencing agarwood formation are age of the tree, season, geographical location, environment, and treatment period. Agarwood induction may be done in tree or sapling. Agarwood induction in saplings need more effort than in trees. Combination of fungi (Fusarium solani) and nutrient (Nitrogen fertilizer) treatment may be one way to induce agarwood in A. malaccensis saplings. This study aims to produce A. malaccensis agarwood (aromatic compounds and colour) by induction of F. solani and nitrogen fertilizer, and analyse the agarwood chemical content. The agarwood chemical content was investigated by Gas Chromatography Mass Spectrometry (GCMS) analysis. Results indicated that agarwood had a different colour for every treatment. The darkest brown and most fragrant agarwood were produced by A. malaccensis treated by a combination of nitrogen fertilizer (4 gr/sapling) and F. solani inoculation. Three chemical compounds were identified i.e. silanediol dimethyl, 4-ethyl benzoic acid and 1,4,7,10,13,16- hexaoxacyclooctadecane with percentages of 25.7, 17.62, and 3.56 respectively. A. malaccensis treated by nitrogen fertilizer and F. solani for 3 months is able to induce aromatic compounds formation, but the colour still dark brown. Biosynthesis of aromatic compounds in agarwood occurs first before changes in the colour of the wood.
Eliya - Suita, Dede Jajat Sudrajat, Nurhasybi - Nurhasybi
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 141-149; doi:10.18330/jwallacea.2018.vol7iss2pp141-149

Abstract:The development of alternative methods for land and forest rehabilitation is necessary for producing good quality seedlings. This study aims to examine and compare the effect of addition of mycorrhiza and rhizobium on the growth of red sengon (Albizia chinensis (Osbeck) Merr.) seedlings in molded seedling media (BMSM) and the addition of various dosages of basic fertilizers to the seedlings on polybags. Seedlings in MSM were tested in the nursery until the age of 3 months. The field test was conducted by comparing the growth of red sengon (6 months after planting) seedlings from the BMSM and seedlings on polybags. The design used was a randomzed block design. BMSM that has been added with 3 g of rhizobium per seedling gave the best growth seedling and plant growth in the field. The growth of the seedling on polybags was increased by giving basic fertilizer of 5 kg per planting hole. Red sengon seedlings originated from seedling in BMSM with the addition of 3 g of rhizobium and seedlings on polybag with a dosage of 5 kg basic fertilizer had the highest growth. BMSM as an alternative technology for tree seedling production can be used for planting, and land or forest rehabilitation.
Agung Wahyu Nugroho, Heru Dwi Riyanto
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 119-129; doi:10.18330/jwallacea.2018.vol7iss2pp119-129

Abstract:Production forest management is aimed at achieving not only economic benefit, but also environmental and social benefit. Riparian vegetation supports the improvement of environmental protection functions in the production forests. Riparian vegetation offers a number of environmental benefits related to water quality, streambank stabilization, and habitat. The study aims to study the potency of riparian vegetation (i.e. species composition, diversity, and similarity of species composition) in Cemoro and Modang river. This research was conducted in the forest for special purposes of Cemoro-Modang, Blora Regency, Central Java Province at BKPH Pasarsore and BKPH Cabak, KPH Cepu, Perum Perhutani Unit I. The inventory of riparian vegetation was conducted by making transects along the river sides combined with sample plots sized 20 mx20 m for trees, 10 mx10 m for poles, 5 mx5 m for saplings, 2 mx2 m for seedlings and 1 mx1 m for understory. The data collected were analyzed by vegetation analysis: Importance Value Index (IVI), species diversity, and similarity index. The result of the study showed that there are 114 species in the riparian zone of Cemoro-Modang river. There are 6, 2, 20, 16, and 85 species of vegetation for trees, poles, saplings, seedlings and understory vegetation, respectively. Riparian vegetation was dominated by Tectona grandis. Species diversity index for trees and poles were low, saplings and seedlings were moderate and understory was high. Similarity index between Cemoro and Modang river was low (i.e. 40.4%).
Nurmuliayanti Muis, Titiek Setyawati, Soekisman Tjitrosoedirjo, Yuliana Diah Ratnadewi
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 131-140; doi:10.18330/jwallacea.2018.vol7iss2pp131-140

Abstract:The composition of soil-seed bank reflects the condition of vegetation in the past and could be used for predicting the composition of plants that will grow in the future. This study aims to determine the amount and composition of soil-seed bank in Bekol savanna, Baluran National Park. Soil samples were taken using a combination method of quadrat-transect on the invaded and not invaded areas by Acacia nilotica. Soil samples were extracted using wet-sieving method. After the extraction process, the seeds were identified and calculated using a stereo microscope. The result showed that soil-seed bank density was lower at the invaded location (7,566.88 seeds/m3) as compared to the uninvaded location (16,798.3 seeds/m3). The soil-seed bank was found in the invaded site comprising 12 species of broadleaved weeds and 5 species of grasses from 7 families, whereas those in the uninvaded area consisted of 10 species of broadleaved weeds and 7 species of grass from 8 families. This study showed that the invasion of A. nilotica significantly affected the amount and composition of soil-seed bank in various soil depths of Bekol savanna.
Heri Suryanto, Supriyanto Supriyanto, Noor Farikhah Haneda
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 173-181; doi:10.18330/jwallacea.2018.vol7iss2pp173-181

Abstract:Lac is a non-timber forest product derived from the secretion of Laccifer lacca insects that are cultivated in kesambi tree (Schleicera oleosa Merr). Low lac production in Indonesia due to poor conditions of host plant indicated by poor growth symptoms, yellowing, and falling leaves. The aim of this research was to study the effect of molasses injection on the growth and vitality of kesambi tree. Molasses were injected into the plant using passive liquid injection methods. Pre-research activities were carried out by the tree trunk injection in 0.5, 1.5, and 2 meters above the ground using gentian violet to determine the best stem injection position, while the main research activity was performed by injection of the kesambi tree trunk using molasses in concentrations of 5, 10, 15% and water as control. The parameters measured at the pre-study was translocation length of gentian violet whereas at the main research were the volume uptake, the increase of branch diameter growth, total sugar content and chlorophyll content. Pre-research results showed that 1.5 meters above the ground is the best injection position. The main research results indicated that the highest volume uptake was water followed by others treatments. Molasses injection at concentration of 10% gives better effect on the increase of branch diameter growth (4.3 mm), obtained sugar content in 18.46%. The vitality of kesambi tree also increased by the molasses injection at concentration of 10%. It was shown by thein creased of chlorophyll a (1.117 mg/g), b (0.416), carotene (0.365), and Anthocyanin (0.094 mg/100g).
Karnita Yuniarti, Arif Nirsatmanto
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 151-163; doi:10.18330/jwallacea.2018.vol7iss2pp151-163

Abstract:Eucalyptus pellita F. Muell is one of the species selected for the development of the plantation forest in Indonesia. In order to obtain a superior plant for the continuity of the plantation forest program, various tree breeding techniques are often applied, one of which is through best provenance selection. Conventional or advanced tree breeding program generally aims to obtain a fast-growing plant with good physical appearance. The program rarely gives attention to the properties/characteristics of timber produced. This aspect becomes the main background of this particular study which aims to investigate the effect of four provenances and also to examine the effect of sampling position on the trees on several physical properties of E. pellita. The result showed that the highest moisture content (97.34 + 15.67%) was found in the bottom part of trees from Indonesia provenance. While, the highest air-dry moisture content (15.15 + 0.20%) was observed in the top-part samples from Provenance North Kiriwo PNG. Samples from Provenance Serisa Village PNG have the highest density ranges, approximately 590 + 90 kg/m3 and 630 + 80 kg/m3 in the bottom-part samples and in the top-part samples, respectively. The highest T/R ratio, approximately 1.91 + 0.26, was observed in the bottom-part samples from Provenance South Kiriwa, PNG. The T/R ratio values of all provenances were less than 2, indicating the lumber will be possibly stable during its uses or further processing. Further result showed provenance factor significantly affect initial moisture content and density. Sampling position on trees only affect affects the initial moisture content. Based on the results, the timber of E. pellita being examined can be further used for light-to-medium construction purpose.
Aronika Kaban, Ani Mardiastuti, Lilik Budi Prasetyo
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 109-118; doi:10.18330/jwallacea.2018.vol7iss2pp109-118

Abstract:Birds have different responses to landscape modification, depends on its adaptation to the environment. The purposes of this study were to identify bird communities in several landscape types and to analyze the landscape structures that affect bird communities. The study was conducted from April to August 2016 at 29 landscapes in the city of Bogor. The landscapes were categorized into four types based on their fragmentation stages: intact, variegated, fragmented, and relict. Birds were surveyed using point count. Bird diversity was calculated using Shanon-Wienner Index, followed by Kruskal-Wallis statistical analysis, the similarity of communities was tested using Bray-Curtis. The landscape structures were quantified using 7 variables and measured using ArcGis patch analyst. Total 8,967 individuals from 75 species and 36 families were recorded. Similarity analysis of the bird community suggested that intact landscapes were clustered separately, while other three types were clustered together. The results showed that the abundance and species richness were higher in intact landscape. Bird diversity in Bogor becomes higher when the total edge, the mean shape index, and the shannon evenness index become smaller.
Danang Wahyu Purnomo, Izu Andry Fijridiyanto, Joko Ridho Witono
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 93-108; doi:10.18330/jwallacea.2018.vol7iss2pp93-108

Abstract:The reclamation area of the ex gold-mining PT. Newmont Minahasa Raya (PT. NMR) will be used as a botanic gardens. This study aims to assess the reclamation program's success based on a variable vegetation of the ex gold-mining area of PT. NMR for the basis of the next management. Observations of vegetation on each unit of area was done by nested sampling system, where plots were placed along a perpendicular transect in a contour line. Vegetation variables were recorded among other: species name, individual number, plot numbers, coordinates, temperature, humidity, canopy cover, and land cover. The effect of vegetation on both of two variable regions, revegetation area and non-revegetation area, was tested using discriminant analysis. The results showed that the vegetation composition of the ex gold mining area of PT. NMR was still dominated by introduction species i.e. gamal (Gliricidia sepium), mahoni (Swietenia macrophylla), and lamtoro (Leucaena leucocephala). The diversity of understorey vegetation was middle category. The vegetation structure of the revegetation area was still in its infancy and has not yet reached climax conditions. However, revegetation efforts PT. NMR has succeeded in restoring the composition and structure of vegetation resembling to vegetation conditions in secondary forests. For supporting the ecosystem stability and promoting development programs of botanic gardens, were the enrichment of native vegetation and endangered species is needed.
Naning - Yuniarti, Dida Syamsuwida, Rina Kurniaty
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 83-92; doi:10.18330/jwallacea.2018.vol7iss1pp83-92

Abstract:The seed of trema (Trema orientalis Linn. Blume) is categorized as physiologically intermediate which decline faster during storage compared to orthodox seeds, resulting in the changes of its viability, vigor and biochemical contents.The study was objected to determine the changes of viability, vigor and biochemical contents of trema seeds during storage. The seeds were collected from Badung - Bali province. Seeds testing were carried out in a laboratory and glasshouse of Forest Tree Seed Technology Research & Development Centre. Biochemical analysis was implemented in Soil and Plant Laboratory, Seameo- Biotrop. A Completely Randomized Design was employed in this trial with a treatment of storage periods (0.1, 2, 3, 4, 5 and 6 months). The parameters were germination capacity, germination speed, moisture content and biochemical content including carbohydrate, protein and fat. The results revealed that all the parameters were significantly affected by storage periods. After six months periods of trema seeds storage, it would caused the decrease of moisture content (6.2%), germination capacity (61%), germination speed (2.5%/etmal), carbohydrate (19.2%) and protein contents (1.8%). However, the content of fat was increased significantly (10.2%).
Marcellinus Mandira Budi Utomo, Levina Augusta Geraldine Pieter
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 13-23; doi:10.18330/jwallacea.2018.vol7iss1pp13-23

Abstract:It has been more than five years Sumbawa becomes the center of wild honey development by Ministry of Environment and Forestry. However, scientific information of its condition is still lacking. This article aims to fill that gap and to discuss the efforts needed in order to make Sumbawan honey more contributes for local people in Sumbawa District. This paper assesses the effectiveness of the Ministry of Environment and Forestry’s supporting programs for wild honey development in The Sumbawa District using two indicators: livelihood capital development and problems on the ground accomplished. The results indicate the programs have not yet optimally developed local peoples’ livelihood capitals and many problems remain occurred on Sumbawan honey business development. This study suggests that works in these areas should be undertaken simultaneously, and encompasses strengthening contract agreement, both horizontally and vertically, and modifying the direction of current programs.
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