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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 BOBOT ISI TANAH GAMBUT AKIBAT PEMANENAN KAYU DI LAHAN GAMBUT Yuniawati Yuniawati; Sona Suhartana
Jurnal Hutan Tropis Vol 1, No 3 (2013): Jurnal Hutan Tropis Volume 1 Nomer 3 Edisi November 2013
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v1i3.1546

Abstract

Pemanenan kayu di hutan rawa gambut memberi efek negatif terhadap kerusakan tanah gambut. Salah satunya terjadinya peningkatan pemadatan tanah yang ditandai dengan meningkatnya bobot isi tanah gambut. Tujuan penelitian ini adalah untuk mengetahui bobot isi tanah gambut pada areal umur tegakan 2,3,4,5 tahun (sebelum pemanenan kayu) dan 0 tahun (setelah pemanenan kayu) di lahan gambut. Metode penelitian yang digunakan adalah mengambil contoh tanah gambut menggunakan bor dan ring sample. Analisis contoh tanah gambut menggunakan metode Agus. Hasil penelitian menunjukkan bahwa : (1). Rata-rata kadar air pada kondisi tanah gambut umur tegakan 2,3,4,5 dan 0 tahun masing-masing yaitu 602,978%, 734,850%, 415,708%, 364,478% dan 291,118%; (2).Rata-rata bobot isi pada kondisi tanah gambut umur tegakan 2,3,4,5 dan 0 tahun masing-masing yaitu 0,173 gr/cm3, 0,164gr/cm3, 0,155gr/cm3, 0,158 gr/cm3 dan 0,177 gr/cm3; (3). Tingginya rata-rata bobot isi pada areal lahan gambut pada umur tegakan 0 tahun (setelah pemanenan kayu) mengindikasikan tingginya pemadatan tanah; dan (4). Hasil uji t menunjukkan bahwa t hitung = 28,723 > t tabel = 2,069 artinya tolak Ho yaitu ada perbedaan bobot isi tanah gambut pada kegiatan sebelum pemanenan kayu (umur tegakan 2,3,4 dan 5 tahun) dan sesudah pemanenan kay(umur tegakan 0 tahun).Kata Kunci : Pemanenan kayu, Hutan rawa gambut, bobot isi tanah, pemadatan tanah
STUDI FAKTOR PEMANFAATAN DAN LIMBAH PEMANENAN KAYU DI HUTAN ALAM PAPUA BARAT Soenarno; Wesman Endom; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol. 36 No. 2 (2018): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2018.36.2.67-84

Abstract

Timber harvesting is an important process in timber utilization because it determines the quality of log. Two important things in timber harvesting are recovery rate and residual factors. This paper identifies distribution, forms and condition of harvesting waste as well as determines utilization factors and timber residual factor due to timber harvesting. Research was conducted in two areas of forest management in Wasior and Nabire Districts, West Papua Province. Recovery rate of forest concession with Reduced Impact Logging (RIL) techniques tend to be higher than that of conventional techniques. Recovery rate ranged from 86.3–87.8% with an average of 86.9% and residual factor ranged from 12.3–13.8%, with the average of 13.1%. The average utilized wood amounted of 4.578 m3/tree from the potential clear bole of 5.293 m3/tree. The wasted volumes ranged from 0.548 to 0.664 m3/tree with an average of 0.564 m3/tree. In general, most of the logging waste was in the form of wood defects (65.1%), broken (23.3%) and firm timber waste (11.6%) which represented the lowest percentage.
OPTIMASI LUASAN PETAK TEBANG DI HUTAN TANAMAN RAWA GAMBUT BERDASARKAN PRODUKTIVITAS DAN BIAYA Sona Suhartana; Yuniawati; Dulsalam
Jurnal Penelitian Hasil Hutan Vol. 31 No. 3 (2013): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2013.31.3.200-212

Abstract

As of this occasion, the management of timber harvesting at the peat-swamp plantation-forest in practice still has not yet reached the optimal tree felling plot area. Consequently, this necessitates exploring a representative model to determine meticulously such optimal plot area, thereby ensuring the forest management to proceed in a sustainable way. In relevant, the related study was carried out consecutively in May 2012 at the PT Wira Karya Sakti's concession area in Jambi; and in June 2012 at the PT Riau Andalan Pulp & Paper's concession area in Riau. For such, the necessary data were taken descriptively and purposively, which comprised the felling-plot areas (X) and the costs (Y) for skidding, maintenance, and canal erection. Further, the obtained X-Y data couples were analyzed for possible quadratic regression models. Results revealed that in Jambi the X-Y model came-up in the regression equation as Y =254.82 - 10.98 X + 0.21 X (R = 0.43 ), with the optimum felling area (X) equal to 26.69 ha and the minimum cost for skidding, maintenance, and canal erection (Y) reaching 105.32 (in Rp 1,000,000,000). Correspondingly, in Riau, the X-Y appeared as Y =299.47 - 14.85 X + 0.26 X (R = 0.59 ), with the optimum felling area (X) reaching 28.60 ha and the minimum cost (Y) as much as 87.14 (in Rp 1.000.000.000).
PENETAPAN ANGKA STANDARD FAKTOR EKSPLOITASI HUTAN ALAM DAN POTENSI LIMBAH PEMANENAN KAYU SUB REGION PROVINSI KALIMANTAN TENGAH Soenarno; Yuniawati; Dulsalam; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol. 39 No. 3 (2021): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2021.39.3.155-169

Abstract

Currently, timber harvesting activities in natural forests are more efficient with reduced impact logging (RIL). More efficientwood harvesting will reduce waste, which increases the standardization of exploitation factors (FE). Ironically, until now, theFE standard set by the Ministry of Environment and Forestry is still based on conventional wood harvesting methods, which is0.7. The sub-region of Central Kalimantan Province has a major role in contributing to production of natural forest logs, bothregionally on the island of Kalimantan by 61.5% and nationally by 29.7%. Still, the amount of wood harvesting waste is notknown with the standardized exploitation factor. This study aimed to obtain a standard number of exploitation factors fortimber harvesting activities in natural production forests in the sub-regional province of Central Kalimantan. The research wasconducted by initially selecting purposively logging companies with Sustainable Production Forest Management (PHPL)mandatory and voluntary certificates. The study was conducted in five of Forest Utilization Business License (PBPH) withPHPL mandatory certified and voluntary certificates. The results showed that the potential for logging waste due to stem divisionin felling site is an average of 0.919 m3/tree and the amount of logging waste due to testing and measurement at the TPn is onaverage 0.093 m3/tree. The FE score ranged from 0.80-0.85 with an average of 0.82. Factors that influenced the FE coefficientinclude the skill of the logger and management policy of PBPH and the diameter of the tree felled.
BIAYA DAN PRODUKTIVITAS PENYARADAN DAN PEMBUATAN/PEMELIHARAAN KANAL DI HTI RAWA GAMBUT DI RIAU DAN JAMBI Sona Suhartana; Yuniawati; Dulsalam
Jurnal Penelitian Hasil Hutan Vol. 31 No. 1 (2013): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2013.31.1.36-48

Abstract

Productivity and cost of skidding and canal establishment are important activity on timber harvesting in peat swamp forest plantation. It could determine timber harvesting efficiency. A study was carried out in June 2011 at concession area of Arara Abadi Company, Riau and July 2011 at Wirakarya Sakti Company, Jambi. This study aimed to find out productivity and cost of skidding and canal establishment at peat swamp forest plantation. Field data i.e. productivity and cost of skidding and canal establishment were collected and processed by tabulation. Study result revealed that 1. The average of skidding productivity for plot I, II, and III each are 12,42; 13,77; 15,32, m/bour (Jambi) and 11,46; 13,04: 15,13 mi/hour (Riau), 2. The average of skidding, cast for Plott I, II, and III rach are Rp 28.306/m², Rp 25.483/mi, Rp 22.843/m (Jambi) and Rp 30.592/m², Rp 26.834/mi, Rp 23.158/m² (Riau), and 3. The average of canal establishment cost for Plats I, II, and III each are Rp 13.623/m, Rp 13.189/m, Rp 13.048/m (Jambi) and Rp 9.670/m. Rp 9.630/m, Rp 9.431/m (Riau).
ALAT BANTU TRUK ANGKUTAN KAYU UNTUK MENGURANGI SELIP RODA PADA JALAN HUTAN TANPA PERKERASAN Yuniawati; Dulsalam; Maman Mansyur Idris; Sona Suhartana; Sukadaryati
Jurnal Penelitian Hasil Hutan Vol. 33 No. 4 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.4.387-395

Abstract

Timber hauling has a main goal to remove timber from forestland to the wood processing industry or directly to consumers. The hauling should be managed efficiently, so that the smooth running of transport should be prioritized. Slip is a serious obstacle that must be anticipated when hauling using trucks. It can reduce labor productivity and increase cost of hauling. The experiment was conducted in April 2014 in the RPH Cijogon, BKPH Tanggeung, Cianjur KPH Perhutani Unit III West Java and Banten. The purpose of research is to find out the use of auxiliary tools for reducing road slip in teak land hauling. The auxiliary tools were designed and manufactured in the workshop. The tools were then applied on the truck wheels in various slopes of slip. Results showed that: the average slip on slope class 0-8%, 9-15% and 16-25 % respectively 3.24 %, 6.11% and 7.58 % with each traction coefficient of 0.59, 0.44 and 0.36. The productivity of teak logs using the tools on slope class 0-8 %, 9-15% and 16-25% respectively 92.02 m³/km/hour, 89.07 m³/km/hour and 83.59 m³/km/hour and production, costs of corresponding teak logs are Rp 2640.01/m³/km, Rp 2737.92/m³/km and Rp 2917.27/m³/km.
PENERAPAN RIL GUNA MENINGKATKAN PRODUKTIVITAS DAN MEMINIMALKAN BIAYA PENYARADAN DI HUTAN TANAMAN RAWA GAMBUT Sona Suhartana; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 33 No. 3 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.3.215-224

Abstract

Logskiddingtechnique in peatland is different with those practiced in dry land. A well planningisrequired especiallyin the useof the skiddingtool. Since skiddingtakes a large portion of production costs, it is nedeed tocompensate by increasing productivity through implemention of the proper harvestingtechniques. This paper studies the increaseof productivity and minimize production cost by implementing RIL technique at peat swamp plantation forest. The study was conducted on 2012 at the work area of PT Satria Perkasa Agung, in Simpang Kanan District, Pelalawan, Riau Province. Data of skidding cost and productivity were processesed by using tabulation to obtain the mean and then analized using t-test of SPSS 18 software. Results show that: 1. RILSkidding technique in peatland could increase the averageof productivity by 8.37% and decrease the average production cost of 3.93%; 2. The use of proper matting lines on skidding in peat swamp forest can reduce uneffective time about 8.3% equal to 3.66minutes/trip.
KAJIAN LUAS PETAK TEBANG OPTIMAL DI HUTAN TANAMAN RAWA GAMBUT: KASUS DI SATU PERUSAHAAN HUTAN DI RIAU Sona Suhartana; Sukanda; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 30 No. 2 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.2.124-134

Abstract

Productive and effective logging activities are usually contentrated at the felling site. These mean that an ideas, felling site development at peat swamp forest plantation in determined by an optimum area. There has been limited study on optimum felling site area at peat swamp forest plantation in Indonesia. This study was carried out in June 2011 at concession area of Arara Abadi Company, Riau. This study aimed of finding out optimum felling site area at peat swamp forest plantation. Field data from some alternatives felling site area i.e. productivity and cost of skidding and canal maintenance/development were collected and processed by tabulation. Study result revealed that based on technique and cost aspects felling site of 150 m x 350 m is an optimum size.
ANALISIS KEBUTUHAN PERALATAN PEMANENAN KAYU: STUDI KASUS DI PT. SURYA HUTANI JAYA, KALIMANTAN TIMUR Sona Suhartana; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 35 No. 2 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.2.145-153

Abstract

Proper quantity of equipments in timber harvesting should be well planned and managed to obtain efficient time and cost of production. This paper study the proper quantity of timber harvesting equipment in accord with production target. The study was conducted in 2010 at PT Surya Hutani Jaya, East Kalimantan. Data collected from the field consisted of equipment productivities, owners and operating costs, number of equipments, and production plan. The collected data were then averaged, and the effects of equipments on productivity and production cost were analyzed using multiple linear regression. Results reveal that there are excessive and shortage uses of equipments in felling to hauling activities, according to the production plan. The most efficient wood harvesting equipments composition for the correlated production consist of 21 units chainsaws for felling, 9 units excavators for skidding, 10 units loaders, 2 units excavator for unloading and 31 units trucks for hauling. The number of timber harvesting equipments has significant influences on harvesting productivity and production cost.
FAKTOR EKSPLOITASI HUTAN DI SUB REGION KALIMANTAN TIMUR Soenarno; Wesman Edom; Zakaria Basari; Dulsalam; Sona Suhartana; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 34 No. 4 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.4.335-348

Abstract

Forest harvest is the first activity to undertake in extracting logs from the forest site. The amount of wood wastes generated during logging operation can be used for measuring the value of exploitation factor (FE). The greater FE indicates more efficient of wood utilization. Indonesian government has so far decided the formal FE is 0.7. This value is no longer accurate for the current better forest management situation which adopting practices of reduced impact logging-RIL and or RIL-C. Considering from economic aspects, the FE value has a very important role, i.e. as multiplying factor in determining annual allocation of wood production (JPT) and as a basic parameter in predicting earn business provision of natural forest (PSDH). Ecological aspects may interprete that the bigger FE value will bring about reduction of forest damages. This paper examines the FE in Sub-Region of East Kalimantan. Results show that the proper FE value for the East Kalimantan Province is ranged between 0.77 – 0.89. The amount of FE value is more influenced by factor of feller skills than the management competence factor of IUPHHKHA.
Co-Authors Dulsalam Maman Mansyur Idris Soenarno Sukadaryati Sukanda Wesman Edom Wesman Endom Yuniawati Yuniawati Yuniawati Zakaria Basari