Journal Jurnal Penelitian Kehutanan Wallacea

99 articles
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Edy Junaidi, Yonky Indrajaya
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 69-81; doi:10.18330/jwallacea.2018.vol7iss1pp69-81

Abstract:Land use in a watershed should consider land capability and watershed carrying capacity so that the land can optimally. Agroforestry is a land use system that not only aims to generate income for the people but also to maintain hydrological conditions of a watershed. This research aims to evaluate the hydrological responses due to the application of agroforestry system on several land use pattern that has been changed. There are three steps in the analysis: (1) Assessment on land use planning (RTRW), (2) Land use suitability classification for agroforestry system, and (3) Development of scenarios for suitable land use of agroforestry system for hydrological function. The results of this study show that the application of agroforestry system of woody plant (i.e. sengon), fruit plant (i.e. Nephelium lappaceum), annual crops (i.e. clove, coconut, Parkia speciosa and banana), perennial crops (i.e. cardamom, and banana), and seasonal crops (i.e. cassava) on unsuitable land use gives the lowers on Coefficient of River Regime (KRS), specific discharge, Run off Coefficient (C) and Total Dissolve Sediment (TDS). This agroforestry system can be applied on several land use pattern that has been changed, because this system not only aims to generate income for the people but also to the maintain hydrological condition of a watershed.
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.
Kuntadi Kuntadi, Ragil S.B. Irianto
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 25-35; doi:10.18330/jwallacea.2018.vol7iss1pp25-35

Abstract:The gregarious caterpillars of Heortia vitessoides Moore is a major defoliator of agar trees. The pest seriously threatens the existing agar tree plantation that has been widely cultivated in the community. Pest attacks began to occur in Indonesia since 2005, resulting in the damage and death of agar tree plants in various regions.To determine the impact of pest attack, a study was conducted through periodic monitoring at agar plantation in Carita Forest Research Station (CFRS), Banten Province, from April 2012 to March 2015. Monitoring was conducted in three plots of agar plantations. Each plot consists of six permanent subplots and in each subplot 15 samples of agar tree were randomly choosen. Data were collected and analyzed on monthly basis according to the intensity of defoliation and the mortality of agar trees. Defoliation intensity was determined by the percentage number of trees suffering defoliation in four damage categories, i.e.: light (10-25%), moderate (25-50%), heavy (50-75%), and severe (75-100%). Tree mortality was calculated as the annual percentage of dead trees. The study showed that the defoliation occurred throughout the year in varying degrees of damage. The monthly percentage of defoliated trees is about 30-70% annualy. The high percentage of tree defoliation mainly occurs during dry and early rainy season (June-December). Higher percentage of heavy and severe defoliations were found mostly at seedling. Repeated heavy defoliation causes stunted growth and tree mortality. Early monitoring and control of pests are very important to be done regularly to prevent the damage wider and heavier.
Ridwan Ridwan, Tri Handayani, Indira Riastiwi, Witjaksono Witjaksono
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 1-11; doi:10.18330/jwallacea.2018.vol7iss1pp1-11

Abstract:The demand of teak (Tectona grandis L.f.) wood for the national industry can only be fulfilled about 0.75 million m3/year from 2.5 million m3/year which is caused by the long of harvesting time and the derivation of suitable land for teak due to climate change. Indonesia has a wide area of dry land to develop teak plant, so that, fast growing and drought resistant teak seedling is needed. The aim of this research was to compare the resistance of tetraploid and diploid teak clone to drought stress. The research was conducted in the greenhouse using Randomized Block Design with two factors and 9 replications. The first factor was clone i.e. diploid (2x) and tetraploid (4x). The second factor was drought stress levels consisted of 5 watering intervals i.e. 3 days, 7 days, 14 days, 21 days, and watering only at the treatment began. Plant height, stem diameter, number of leaves, leaf area, leaf thickness, leaf water potential, stomata, root system, and plant dry weight were observed to evaluate the plant growth. The result showed that the growth of both tetraploid and its diploid seedling clones were declined under drought stress. However, the growth of tetraploid seedling is better than its diploid seedling.
Ganis Lukmandaru, Dewi Susanti, Ragil Widyorini
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 37-46; doi:10.18330/jwallacea.2018.vol7iss1pp37-46

Abstract:Mahogany woods from community forests generally have relatively low qualities due to lack of maintenance activities and for their young harvesting stage. Heat treatment is known as wood modification method that could improve the quality of the wood. The aim of this study was to determine the interaction effect of temperature and method of heat treatment on the chemical properties of young mahogany wood. Materials used in this research were mahogany wood boards from community forest which were heat-treated using oven and steam methods performed at the temperature of 90°C, 120°C, and 150oC for 2 hours. In this research, some chemical changes were analyzed. Results of the research showed that the interaction of temperature and heat treatment method gave a significant decreasing on the pentosan amount, and hot-water extractive solubility, particularly the steaming at 150oC. The increasing temperature of heat treatment significantly decreased the content of holocellulose, α-cellulose, hemicellulose, and pH values whereas it increased lignin content, extractives (cold-water and alcohol-benzene extractives) and solubility in 1% NaOH. Steaming method provided lower levels in the content of holocellulose, ethanol-benzene extract, cold-water solubility, and pH values compared to the oven heating. However, the steaming method over 1200C should be considered as it would reduce the wood strengths.
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%).
Heru Setiawan, Mursidin Mursidin
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 47-58; doi:10.18330/jwallacea.2018.vol7iss1pp47-58

Abstract:Mangrove forest at Tanakeke Island has important roles both for ecology and economy. High pressure on mangrove caused mangrove degradation in the island. Knowledge of ecological conditions and health of mangrove forest are essential for mangrove ecosystem management at the island. The study aims to determine ecological characteristics and health status of mangrove forest at Tanakeke Island, Takalar District, South Sulawesi. This study employed quantitative methods using field survey with observations using plots of 10 m x 10 m. Observation plots were located evenly all over the island. Results showed mangrove forests at Tanakeke Island consist of 11 species belong to 8 families. Shannon-Wiener diversity index reached 2.01, 1.88, and 1.18 for tree, sapling, and seedling, respectively. Importance Value Index reached 115.31, 172.11, and 108.89 for tree, sapling, and seedling, respectively, and dominated by Rhizophora stylosa at all growth levels. Structure of mangrove forest stands resembles the letter "J" inverted, which means the structure of forest stands were quite normal as a result of the good process of plant regeneration. The density reached 706 ind/ha, 4,824 ind/ha, and 23,382 ind/ha for tree, sapling, and seedling, respectively. In general, mangrove forest health levels at Tanakeke Island were categorized in low to moderate levels.
Herawikan Mandiriati, Djoko Marsono, Erny Poedjirahajoe, Ronggo Sadono
Jurnal Penelitian Kehutanan Wallacea, Volume 7, pp 59-68; doi:10.18330/jwallacea.2018.vol7iss1pp59-68

Abstract:Botanical garden as a preservation area has an important role supporting the plant conservation efforts. It is the best source of information to study about plant distribution and its habitat attributes. Botanical garden can also provide environmental education for the community. Indonesia has a big number of botanical gardens, one of them is Baturraden Botanical Garden, located in Central Java. It is the largest botanical garden in Java Island with its area reaches 143.5 hectares. Currently, Baturraden Botanical Garden management has a serious problem about the high dependence of community in its area. Therefore, it is important to formulate the scenario management that can integrate between the community desires and its direction management. This study aimed to identify the community preference on scenario management of Baturraden Botanical Garden. Data collection was conducted by the questionnaire method using accidental sampling technique. The number of respondents was about 109 people older than 15 years old. This criterion was decided with the assumption that the respondent who had the range of age, having good knowledge about the function of Baturraden Botanical Garden as preservation area. Data analysis was done using Analytical Hirarycal Process. This method was selected because it was capable to describe the normative preference by the number. The result showed that the community preference on scenario management of Baturraden Botanical Garden based on the scale of priority is ecotourism development (0.269); optimization of water resource (0.232); intensification of plant conservation (0.197); environmental education (0.189); and intensive research (0.175).
Mashudi Mashudi
Jurnal Penelitian Kehutanan Wallacea, Volume 6; doi:10.18330/jwallacea.2017.vol6iss2pp125-134

Abstract:Vegetative propagation has an important role in production of high quality planting stocks. Through vegetative propagation, the genetic potential of a mother tree will totally be inherited to the off-springs.This study aimed to determine the effects of population sources and clones on growth variation of Shorea leprosula Miq shoot cuttings. Randomized Complete Block Design (RCBD) was used as an experimental design; which consists of two factors, i.e population sources (Muara Wahau, Berau, Kenangan, Ketapang and Carita) and clones (40 clones). In this study clone was nested in the population. The results showed that the clones and population sources influenced the rooting percentage, height growth, number of root, length of root and number of leaves of S. leprosula shoot cuttings. Rooting percentage of clones ranged between 66.7 – 100.0% (2 groups difference), height growth ranged between 2.60 – 6.80 cm (6 groups difference), number of root ranged between 2.1 – 5.7 (9 groups difference), length of root ranged between 4.3 – 15.8 cm (8 groups difference) and number of leaves ranged between 1.17 – 3.57 (5 groups difference).
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