Jurnal Sylva Lestari
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Respons Semai Jati (Tectona grandis) Unggul pada Beberapa Tingkat Konsentrasi Sulfur (Responds of Superior Teak (Tectona grandis) on Different Sulphur Concentrations)
Full text linkThe tree improvement program has invented superior teak with an ability to improve its productivity. Yet the information about basic nutrient requirement of superior teak is less known. This study aimed to determine the optimal concentration of sulfur for the best growth of superior teak seedling and to identify the morphological symptoms of teak seedlings affected by several concentration levels of S. This study was conducted at a nursery on six months old teak seedlings. The experimental design was Completely Randomized Design (CRD) with four different solution treatments with three replication each. The treatments are K (control, aqua dest does not contain nutrients), S0 (solution contains nutrients except sulfur), S1 (solution contains nutrients with 0,5 full strength of S), and S2 (solution contains nutrients with full strength of S). Each treatment was replicated 3 times. Parameter observed included the height of seedling, the diameter of seedling, the nodal distance of seedling, the number of leaves, size of leaves and morphological symptoms of leaf. The results showed that at a concentration of nitrogen (N), phosphor (P), potassium (K), calcium (Ca), and magnesium (Mg) in full strength level, superior teak seedling which treated by S1 (S concentration of 421 ppm) resulted in the best growth. However, the morphology of teak leaves in all treatment showed abnormal.Keywords: growth, morphology, sulfur, superior tea
Saluran Pemasaran Kayu Gergajian Sengon (Falcataria moluccana) pada Industri Penggergajian Kayu Rakyat di Desa Sukamarga, Kecamatan Abung Tinggi, Kabupaten Lampung Utara (Marketing Channels of Sengon (Falcataria moluccana) on the Local Community Sawn Timber Industry in Sukamarga Village, Abung Tinggi Sub-district, North Lampung Regency)
Full text linkMarketing channel is one of the influencing factors for sustainability sawmills managed by local people that use sengon timber as raw materials. The research objective is to explain the marketing channel for sengon sawn timber derived from sawmills managed by local people. Data were collected through interviews and observation; where the fifth respondents for interviews; were selected by purposive sampling. The collected data were then analyzed qualitatively to determine the marketing channels of sengon sawn timber. The results show that there are four marketing institutions, namely: sawmill, woodshop in Kotabumi, industry outside of the Kotabumi, and broker. The four institutions form three marketing channels: (1) sawmill – woodshop in Kotabumi – industries outside of the Kotabumi, (2) sawmill – industry outside of the Kotabumi, and (3) sawmill – broker – industry outside of the Kotabumi. A business will be more profitable when the sawmill owner purchased logs directly from the farmers, henceforth the benefits of both the farmers and the sawmill owner will be maximized.Keywords: marketing, marketing channels, Falcataria moluccana, sawmill, sawn timbe
Karakterisasi Pelet Kayu Karet (Hevea brasiliensis) Hasil Torefaksi dengan Menggunakan Reaktor Counter-Flow Multi Baffle (COMB) (Characterization of Rubberwood (Hevea brasiliensis) Pellets Torrefied with Counter-Flow Multi Baffle (COMB) Reactor)
Full text linkIndonesia has the largest rubberwood (Hevea brasiliensis) plantation area in the world. Rubberwood is mainly planted for latex production and as latex production declines with age, rubberwood is generally felled. The logging waste and industrial waste of rubberwood-based products could be utilized as raw materials to produce biomass pellets. The quality of biomass pellets can be increased through torrefaction, a thermal process in the temperature range of 200-300°C under an inert atmosphere. This study aimed to evaluate the effect of torrefaction on the characteristics of rubberwood pellets. The torrefaction of rubberwood pellets was conducted using the Counter-Flow Multi Baffle (COMB) reactor, a reactor that could perform torrefaction within a short residence time of up to 5 min. The temperature used in this study was 200°C, 250°C, dan 300°C with a residence time of 3 min. The color change, physical properties, chemical composition, and heating value were evaluated. The results showed that the pellet’s color changed from light brown into black pellets, showing the overall color change (∆E*) of 29,12, 54,27, and 66,71, after torrefaction at 200°C, 250°C, and 300°C, respectively. The equilibrium moisture content of the pellets decreased from 12,25% to 3,54%. The water immersion test also showed that the torrefied pellets have a better hydrophobicity, which is an advantage when pellets are stored in a humid condition. The oven-dry density of pellet decreased from 1,15 g/cm3 to 1,09 g/cm3, 1,04 g/cm3, and 0,96 g/cm3, after torrefaction at temperatures of 200°C, 250°C, and 300°C, respectively. Torrefaction caused a decrease of cellulose and hemicellulose contents, an increase of lignin content, and a remarkable increase in the heating value of 1,71-18,32% with increasing torrefaction temperature. The results proposed that torrefaction using the COMB reactor could provide a great improvement in the quality of rubberwood pellets to improve the additional value of the products.Keywords: black pellet, Counter-Flow Multi Baffle, rubberwood (Hevea brasiliensis), torrefactio
Strategi Pengelolaan untuk Pengembangan Hutan Rakyat di Kecamatan Rancakalong, Kabupaten Sumedang (Management Strategy for Private Forest development in Rancakalong District, Sumedang Regency)
Full text linkWood is one of the natural resources needed by humans. The high growth rate of the human population causes an increase in demand for wood. Currently, one of the largest timber producers in West Java is private forests. Fulfillment of high demand for wood should be balanced with good management, so that is not to threat private forest sustainability. One of the areas with the private forest that is still actively undertaking private forest management activities is in Rancakalong District, Sumedang Regency. This study aims to identify the current management practice of private forests and to formulate sustainable development strategies. The data was collected through questionnaires and interviews, field observation, and secondary data collection. The respondent number of private forest farmers was 98 respondents. Snowball sampling techniques were used to interview government officials, middlemen or wood dealers. The analysis results at the input have an internal total score of 2,7, which shows the condition is at the medium stage and external total score of 3,17, which shows the public response to threats and opportunities are strong enough. At the matching stage, the result is that the management of private forest is the second quadrant, which means that the private forest is entering the growth stage. The study result shows that the first priority to be implemented in the Rancakalong private forest is to establish farmer organizations.Keywords: private forest, management, strategic, Rancakalon
Partisipasi Masyarakat dalam Pengelolaan Mangrove (Community Participation in Mangrove Management)
Full text linkCommunity participation has an important role in mangrove management because the community is the front guard in maintaining the sustainability of mangroves. This study aims to determine the level and type of participation of Kelompok Paguyuban Peduli Lingkungan (a mangrove group). The research was conducted in January-February 2018 in Sidodadi Village, Teluk Pandan Subdistrict, Pesawaran District, Lampung Province. Data obtained through in-depth and structured interviews were then analyzed qualitatively using Arstein and Hobley Theory. The results show that community participation is at the level of therapeutic participation and the type of passive participation. The involvement of various parties in the planning stage to implementation is needed to encourage increased community participation.Keyword: community participation, level of participation, mangrove, type of participatio
Ketersediaan Vegetasi Bahan Dasar Pembuatan Sarang Burung Cenderawasih Kuning Kecil di Kepulauan Yapen, Papua (The Availability of the Basic Vegetation Materials for the Bird Nest of Paradisaea minor jobiensis in Yapen, Islands Papua)
Full text linkThe existence of cendrawasih (Paradisaea minor jobiensis Rothschild 1897) has been endangered due to destruction its habitats and wild hunting, hence conservation of its habitats is urgently needed. The objective of this study was to determine the availability of vegetation materials for creating the nests as an effort for the conservation of P. minor jobiensis in Imboriawi Forest, Barawai, Yapen Islands, Papua. Data were collected using the method of line compartment. Vegetation at seedling, sapling, pole and tree levels were measured and analyzed to determine the availability of plant species as the materials for creating bird nest. The results of vegetation analysis revealed 60 species at seedling level, 43 species at sapling level, 68 species at pole level, and 74 species at tree level with high diversity index values (H’) of 3.68, 3,32, 3,87, and 3,87 for seedling, sapling, pole, and tree levels, respectively. The results also revealed that vegetation used as a materials of nest of P. minor jobiensis in Imbowiari Forest is Bidens spilosa, Macaranga mappa, Timonius timon and Ficus septica. The four species at seedling, sapling, poles, and tree levels have low diversity index values (H’= 1) but can be used as indicators of making a nest in a sustainable way. Keywords: bird nest, conservation, Paradisaea minor jobiensis, vegetation analysi
Keanekaragaman Jenis Avifauna di Pusat Latihan Gajah (PLG) Taman Nasional Way Kambas (Diversity of Avifauna at the Elephant Training Center Way Kambas National Park)
Full text linkAvifauna is one of the biodiversity that has a role in the ecosystem, namely as a seed spreader, helps pollination, and as an environmental bioindicator. The Elephant Training Center (PLG) is not only a conservation centre for Sumatran elephants but also serves as a habitat and preserves the diversity of all animals including avifauna species. One form of conservation efforts towards avifauna is to record the diversity of the avifauna species present in that location. This study aims to determine the diversity of bird species found in the Way Kambas National Park PLG. The study was conducted using the point count method at three observation locations: garden area, grassland, and swamp area with three repetitions. The results of the study found 33 species from 21 families (727 individuals) with moderate species diversity values (1 <H '<3). The diversity of bird species affects the existence of some species in a habitat so that it affects the quality of habitat and plays an important role as a bioindicator in an ecosystem. Bird conservation efforts need to be carried out and supported by all parties to maintain the existence of birds in their natural habitat.Key words: Avifauna, diversity, conservation, national park, elephant training center
Dinamika Daya Dukung Habitat Badak Sumatera (Dicerorhinus sumatrensis) di Areal Pengembangan Suaka Rhino Sumatera Taman Nasional Way Kambas (The Dynamic of Habitat Carrying Capacity Sumatran Rhinoceros (Dicerorhinus Sumatrensis) in Development Area Sumatran Rhino Sanctuary Way Kambas National Park)
Full text linkThe Sumatran Rhino Sanctuary is the only place where semi-Sumatran rhinos in Indonesia have been conservation, located in Way Kambas National Park which has never been revealed through systematic research on its capacity to support its function as a conservation site for rare species such as the Sumatran rhinoceros (Dicerorhinus sumatrensis). This study was conducted in August 2015 which aims to determine changes in the type and potential of natural feed, palatability of feed, potential water availability, and the cover of Sumatran rhinoceros habitat. This study uses a sample plot method. Data on carrying capacity of the collected habitat are data on the potential of feed plants, the level of rhino preference for feed types, water availability and habitat cover. The results showed that the number of feed species in the understorey phase increased, in the liana phase, seedlings, stakes and poles decreased, whereas in the tree phase there was no change because the number of species found was the same. Palatability of food has changed, in 2001 the rhinoceros favoured was a species of Psychotria sclerophylla while in 2015 it was a species of Planchonia valida. Changes occur in the potential for water availability, in 2001 14 water sources were found while in 2015 8 were water sources. In environmental factors, there is an increase in the intensity of light in the puddle, under the canopy, and the river, but in the swamp, there is a decrease in the intensity of sunlight, the average air temperature increases, and the average air humidity decreases. Keywords: development areas, habitat carrying capacity, sumatran rhino, Sumatran Rhino Sanctuary
Kontribusi Tanaman Agroforestri terhadap Pendapatan dan Kesejahteraan Petani (Contribution of Agroforestry Plants to Farmers' Income and Welfare)
Full text linkThe people who live adjacent to Tahura Wan Abdul Rachman depend their lives on land management in the block utilization of Tahura with the agroforestry system. This system is implemented with different plant compositions so that the effect on income is different. This study aims to determine the composition of agroforestry plants that provide the highest income and welfare level for farmers. The study was conducted in 2017 in Sidodadi Village, Pesawaran District, which borders Tahura Wan Abdul Rahman. The variables analyzed consisted of revenue and production costs in the management of agroforestry, farmer expenditure and the number of family member. The results obtained from the 7 plant compositions identified, composition II with the main plants of banana and cacao and other types of plants are clove, chili, areca nut, soursop, mango, rambutan, durian, coconut, pecan, duku, jengkol, petai, avocado, nutmeg , breadfruit, sugar palm, bayur and cempaka; provide the highest income with an average income of Rp. 21,640,777/family/year but this income is still in a sufficient category and is only limited to meeting basic needs. It is the composition of plants that are most widely used by the community.Keywords: agroforestry, income, plant composition, welfar
Inventarisasi Pohon Plus Dalam Blok Koleksi Di Taman Hutan Raya Wan Abdul Rachman
Full text linkPlus tree inventory was an activity for collecting and compiling data.Collection block was an area within Great Forest Park region that contains different types of plant, either endemic or non-endemic plants, which serves for protection and preservation, research, science, education, support the cultivation, culture, tourism and recreation.The information about the existence of plus trees on the collection block still rare.So, plus tree inventory still necessary to fulfill the data.This research was held in Wan Abdul Rachman Great Forest Park Collection Block at February to March 2012.The aim of this research is to identify the trees which has plus tree criterias.Data collected by using line terraced layers method which placed systematically.The collected data include the types of trees, trunk diameter, branch height, trunk straightness, tree’s health condition, fruit production, branch corner, sphericity form of circumference stem, and the location of the plus tree.Based on the results, there were 9 species of trees that identified as plus trees,7 species of wooden trees, which are 3 taboo trees (Tetrameles nudiflora), 1 dadap tree (Erythrina fusca), 1 purple coral tree (Pterospermum javanicum), 1 sandpaper tree (Ficus ampelas), 6 kapok trees (Ceiba pentandra), 1 red cedar tree (Toona sureni), 1 mindi tree (Melia azedarach) and 2 species of MPTS trees, 1 durian tree (Durio zibethinus), and 1 mango tree (Mangifera indica).Total number of individual tree that meets the plus tree criterias are 16 trees.Keywords: inventory, plus tree