Jurnal Manajemen Hutan Tropika
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Efisiensi Penggunaan Potret Udara Non-Metrik Format Kecil dengan Tehnik Pengambilan Contoh Berganda
Get PDFA comparison study on the efliciency of the use of smaN format non-metric aerial photographs(SFNAP) and conventional (metric) aerial photographs (CAP) was performed. The relative efficiency was computed based upon the implementation of double sampling with regression technique in comparison with the use of simple random sampling. The study found that, for estimating stand volume of teak wood, the SFNAP provided better sampling error as well as relative efficiency than those provided by the CAP. The relative efficiency of the SFNAP is 296.7% while therelative efficiency of the CAP is 225.7%. Economically this study expressed that, the use of the SFNAP for forest inventory using double sampling technique is cheaper than using the CAP
Aliran Permukaan dan Erosi di Areal Tumpangsari Tanaman Pinus Merkusii Jungh. Et de Vriese
Get PDFThe rate of surface run-off and erosion from the logged over pine forest plantation under tumpangsari system (taungya) management which combine the perrenial plant of one year old pine plantation and different annual crops on two different physical characteristic of catchment areas (Plot A and Plot B) were measured. Surface run-off from Plot A and B were 2 % and 0.3 % of rainfall respectively. The rate of erosion from Plot A and B were 6.7 and 0.9 ton/ha/yr respectively The rate of erosion from Plot A and B were higher than that of the previous pine forest plantation, but they were lower than the rate of tolerable erosion
The Strategy to Stop the Degration of Tropical Rain Forest in Indonesia and How to Improve the Condition
Get PDFDeforestasi dan degradasi kualitas hutan hujan tropika di Indonesia dimulai tahun 1960 yaitu sejak diperkenalka sistem Tebang Pilih Tanam Indonesia (TPTI) terhadap 64 juta ha hutan produksi dan konversi hutan tropika menjadi lahan non-hutan seluas kurang lebih 30 juta ha. Kebijakan pemerintah atau pengambil keputusan, rencana tataguna hutan, kesalahan manajemen perusahaan hutan produksi oleh perusahaan-perusahaan swasta dan penebangan liar telah memicu kerusakan hutan. Bagaimana cara memberhentikan deforestasi dan degradasi hutan, maka perlu dilakukan strategi khusus untuk memperbaiki kondisi hutan seyogyanya dilakukan pendekatan melalui revisi kebijakan pemerintah, penerapan pengelolaan hutan lestari dan perbaikan kondisi ekonomi masyarakat. Stabilitas dari manfaat hutan hujan tropika di Indonesia tidak bisa dicapai apabila degradasi dan deforestasi hutan hujan tropika tidak bisa diberhentikan
Prospek dan Tantangan pengembangan Industri Pulp dan Kertas Indonesia dalam Era Ekolabeling dan Otonomi Daerah
Get PDFThe history and purpose of Ecolab ling system should be understand and also the relation with ISO 9000 and ISO 14000 and then the problems of Agribusiness development on pulp and paper production con be predicted in the district otonomi system. Capacity building and educated manpower in the district level should be improved. Negative impact of ecolabel system in International Trade Should be avoided. National ecolabel institute will be more favourable then international ecolabel institute
Tehnik Mendeteksi Kebakaran Hutan Melalui Citra Satelit Multiwaktu: Studi Kasus di Propinsi Sumatera Selatan dan Riau
Get PDFThis paper describes the techniques for detecting forest and land fire. Of the three change detection techniques evaluated, i.e., post-classification comparison, multitemporal principal component and direct multitemporal classification, the multitemporal principal component, specifically that was derived from variance-covariance matrix (unstandardized principal component) was recognized to be suitable in detecting changes due to forest and land fires. The study found that the delta brightness, delta greenness, stable brightness and stable greenness indices derived from unstandardized multitemporal principal component analysis effectively summarized burnt-forest information. In this study, it was shown that Landsat TM provides information of totally and moderatelly burnt logged-over forest as well as burnt bush/shrub
Integrasi Pengetahuan Tradisional dengan Pengetahuan Ilmiah untuk Pengelolaan Hutan Lestari
Get PDFScientific knowledge faces a limitation to describe the complexity of forest ecosystem and its involved local communities. Integrating traditional and scientific knowledge is necessary to deal with this complexity. A knowledge-based system with fuzzy logic may become an alternative to complete scientific knowledge by integrating it with traditional knowledge. The paper describes how the integration can be made
Proses Penyelesaian Sengketa Lahan Hutan: Suatu Kajian Antropologi Hukum Kasus Sengketa Lahan Hutan antara Perusahaan HPH PT. Diamond Raya Timber dengan Masyarakat Lokal di Kabupaten Bengkalis, Propinsi Riau
Get PDFThis study present a case of forest land dispute between Private Forestry Company and Local Community and its resolution processes. The study focus on the strategy options, implemented by interest groups. The strategies include law option (customary law, state law, letter of agreements) and conflict resolution models option (negotiation, mediation, etc). Which strategy implemented by interests groups will determine the results of the resolution process. This study describe which laws, models of resolution, and the results. The local community has chosen the letter of agreement, i.e. the forest land boundary, as the basis of (forest) land claim, while the Private Forestry Company, on the other hand, has chosen the state laws (decrees of forestry ministry). The NGOs has chosen her position as the community representative, while the government (forestry department, provincial government), on the other hand, tended to be the company agent. Neither of the local community and the NGOs or the company has satisfied yet to the result of the conflict resolution
Respon Hidrologi Daerah Aliran Sungai (DAS) Berhutan Jati (Tectona grandis) (Studi Kasus di DAS Cijurey, KPH Purwakarta, PT. Perhutani Unit III Jawa Barat)
Get PDFThe discharge of the upper Cijurey watershed (4.217 km2) was measured using an automatic water level recorder since 1999. The teak (Tectona grandis) plantations of different age classes cover the whole watershed. The watershed is dominated by undulating topography with gentle slopes, low soil permeability and also low potential aquifer flow rate. Hydrograph analysis shows that high peak flow (Qp) reached 32,5 m3/s (1,3 m), while concentration time (Tc) and recession time (Tr) were 2 hours and 3 hours, respectively. Visual observations on stream flow shows that the maximum discharge was more than 2 m high, which caused flood, while for two successive months (August and September, 2000) the river at the watershed out let was totally dry. These hydrograph properties indicated the quite bad hydrological response of the watershed.
Fungi yang Berasosiasi dengan Benih Acacia crassicarpa Sesaat Setelah Panen dan Setelah Penyimpanan
Get PDFAcacia crassicarpa is one of the forest tree species recommended for the establishment of Industrial Forest Plantations (Hutan Tanaman Industri/HTI) due to its fast growth on any soil type, and its prominent adaptability and resistance to sub-optimal field conditions, as well as to its high quality wood. One of the problems faced is the fact that the seeds are susceptible to pathogens soon after harvesting, as well as after they are stored. The pathogens cause seed-rot or reduce the germination percentage. The study was conducted to determine the storage fungi and their effects on the seed viability. The information gathered was expected to be useful for the development of the control method to reduce the loss due to fungal infection. In this study, 30 seed samples of A. crassicarpa were collected soon after harvesting and another 30 seed samples after 3-month placed in Dry Cold Storage. The germination and the infection percentages of the seeds were determined by employing the blotter test method (ISTA, 1976), 7 days after storage. The experiment was carried out in five replicates. Soon after harvesting, the fungal species associated with the seeds were Penicillium sp., Aspergillus sp., and Rhizopus sp.. Penicillium sp. was the dominant species with 40% seed infection and 73,3% seed germination. After 3-month placed in DCS, the same species were associated with the seeds and the dominant species was Rhizopus sp. with 77,3% seed infection and 60,7% seed germination
Gis-Based Method in Developing Wildfire Risk Model (Case Study in Sasamba, East Kalimantan, Indonesia)
Get PDFAnalisis pemetaan lengkap (Cemplete Mapping Analysis) yang berbasis sistem informasi geografis (SIG) digunakan untuk melakukan pembobotan terhadap nilai “vulnerability” dari faktor-faktor resiko dalam rangka membangun suatu model dan memetakan kelas-kelas resiko kebakaran liar. Ada dua faktor utama, yaitu faktor lingkungan fisik dan aktifitas manusia yang sangat mempengaruhi terjadinya kebakaran hutan. Model yang ditemukan pada saat ini memperlihatkan bahwa kelembaban relatif adalah faktor terpenting diantara faktor lingkungan fisik, sementara jarak terhadap pusat-pusat pemukiman merupakan faktor terpenting diantara faktor aktifitas manusia. Diketahui juga bahwa, terjadinya kebakaran liar lebih banyak dipengaruhi oleh faktor aktifitas manusia daripada faktor lingkungan fisik. Pada studi ini, wilayah resiko kebakaran liar dibagi atas 3 kelas, dimana ditemukan bahwa kelas resiko kebakaran tertinggi mendominasi lokasi penelitian, selanjutnya diikuti dengan kelas resiko sedang dan rendah. Berdasarkan hasil verifikasi, model hanya berhasil menduga kelas resiko tinggi yaitu sebesar 76,05%, sementara gagal dalam menduga resiko kebakaran sedang dan rendah (lebih rendah dari 40%)