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All Journal JURNAL HUTAN TROPIS Jurnal Penelitian Hasil Hutan
Sona Suhartana
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Materials Science & Nanotechnology

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PENINGKATAN PRODUKTIVITAS PEΜΑΝΕΝΑΝ KAYU MELALUI TEKNIK PEΜΑΝΕΝΑΝ KAYU RAMAH LINGKUNGAN: KASUS DI SATU PERUSAHAAN HUTAN RAWA GAMBUT DI KALIMANTAN BARAT Sona Suhartana; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 29 No. 4 (2011): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2011.29.4.369-384

Abstract

Implementation reduced impact logging (RIL) technique in peatlands may contribute optimum and sustainable yield. A study was carried out at concession area of Kalimantan Subur Permai Company, West Kalimantan. The area war a natural peat swamp forest set aside for the land-clearing in preparation for the establishment of industrial plantation forest, in which consisted of miced barkwood trees. This study examined possibility of increasing productivy, decreasing logging cast, subsidence, and water fluctuation using RIL. technique. Results revealed that the use of RIL in felling, skidding, loading, un-loading, and banling at peat swamp forest could: 1. Increase productivity for each activity of consecutively 0,946 m²/hour, 2,449 m² / Бомт, 1,96 m²/bour, 1,871 m²/hour, and 2,158 ml/bour, 2. Decreased production cost of Rp 992,1/m², Rp 3.088,6/, Rp 127,9/m², Rp 99,7/m², and Rp 158,6/m² consecutively; 3. Inceased timber efficiency utilization (TUE) about 6% equal to Rp 74,400,000/year, 4. Subridence proceeded at 0.375 om/year rate, which corresponded to 1.875 cm in five years. This figure was still lower than that stipulated in the Indonesia's Government Decree (PP) Na. 150-2000. 4. The averages of water level at logging site and canal were 61.75 cm and 52.25 cm, respectively.
LUAS PETAK TEBANG OPTIMAL PEMANENAN KAYU DI AREAL HUTAN TANAMAN RAWA GAMBUT Sona Suhartana; Yuniawati; Dulsalam
Jurnal Penelitian Hasil Hutan Vol. 32 No. 3 (2014): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2014.32.3.175-188

Abstract

Skidding, maintenance and canal establisment activities in peat swamp forest require comprehensive planning actionssince the forest has a critical land and difficult to reclamate when it is damaged seriously. It is required to determine anoptimum felling area, considering technical, economical and ecological aspects. A study was carried out in June 2013 atconcession area of Bina Silva Nusa (PT BSN) Company. This study aimed to find out the optimum felling area and theskidding productivity, as well as canal maintenance and establishment. Data were taken descriptively and purposively,which comprised of felling-plot areas (Y) and the costs (X) for skidding, maintenance, and canal establishment. Further,the obtained X-Y data couples were analyzed for possible quadratic regression models. This study resulted model of theoptimum felling area : 1. Y = 55.7 - 6.8 X + 0.21 X ; or Ln Y = 55.7 - 6.8 Ln X + 0.21 Ln X , whichR = 0.1532** or R = 0.391 (R = 0.254), with the optimum felling area (Y ) of 22.21 ha and the minimumcost (X ) as much as Rp 612.644.033; 2. The average increase of skidding productivity andestablishment/maintenance of the secondary canal, collector canal and tertiery canal were 1.37 m /hour (9.5%), 1.298m/hour (5.3%), 1.706 m/hour (2.33%), and 1.4 m/hour (1.3%).
Co-Authors Dulsalam Maman Mansyur Idris Soenarno Sukadaryati Sukanda Wesman Edom Wesman Endom Yuniawati Yuniawati Yuniawati Zakaria Basari