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<![CDATA[UJI COBA PEMANENAN GETAH PULAI DARAT (Alstonia angustiloba Miq.) MENGGUNAKAN STIMULAN ORGANIK ]]>
<![CDATA[Sarah Andin]]>;
<![CDATA[Mutia Herni Ningrum]]>;
<![CDATA[Sukadaryati]]>;
<![CDATA[Soenarno]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 40 No. 3 (2022): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2022.40.3.155-164
<![CDATA[The utilization of the pulai darat tree (Alstonia angustiloba Miq.) is not only for wood but also for sap. The potency ofpulai darat in KHDTK Kemampos is relatively abundant and its sap has not been utilized optimally. This paper observes thetapping techniques and an additional stimulants for enhancing sap production. This study aimed to explore the optimum tappingtechniques and the use of stimulants to improve pulai darat sap production. The combination of two tapping techniques and threestimulants were observed in this study. Result shows that the V-shape tapping produced more sap than half spiral-shape tappingtype and organic stimulants could improve sap production compared to those without stimulants. In this study, wood vinegarstimulants produced the highest sap followed by lime with an average production of 16.75 g and 12.40 g, respectively. Therefore,further tapping innovation is necessary to develop an efficient and effective stem wounding process and stimulants application.]]>
<![CDATA[PENGARUH PERBAIKAN METODE PEMBAGIAN BATANG TERHADAP WAKTU KERJA DAN PRODUKTIVITAS PENEBANGAN HUTAN ALAM PRODUKSI: STUDI KASUS DI PT. DWIMAJAYA UTAMA ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Yuniawati]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 37 No. 1 (2019): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2019.37.1.13-32
<![CDATA[The improvement of bucking method in tree felling was examined to observe harvesting efficiency in natural production forest. This paper studies distribution of work time elements, productivity, and efficiency of timber utilization in accord with application of bucking system improvement. Research was conducted in natural forest production concession of PT. Dwima Jaya Utama in Central Kalimantan. The study was conducted using four research sample plots (PCP) measuring of 100 m x 200 m which were placed intentionally (purposive) on selected cutting plots. Two PCPs were used for the conventional logging treatment (CV) and the remaining plots were allocated for the improving stem distribution methods (IBM). Data analysis was performed statistically using PWSTAT version 23.0. Results showed that the CV method’s working time of 14.6 minutes/tree was not significantly different with that of IBM working time of 15.5 min/tree. Wood utilization efficiency of IBM was 93.1%, which was higher than that of the conventional method (CV) of 85.4 %. However, the productivity of IBM was 27.161 m3/hour, which was lower than that of the CV method of 32.847 m3/hour.]]>
<![CDATA[EFISIENSI PEMBALAKAN DAN KUALITAS LIMBAH PEMBALAKAN DI HUTAN TROPIKA PEGUNUNGAN: STUDI KASUS DI IUPHHK-HA PT RODA MAS TIMBER KALIMANTAN ]]>
<![CDATA[Soenarno]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 32 No. 1 (2014): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2014.32.1.45-61
<![CDATA[mprovement of forest management and logging techniques result in increasing of logging efficiency and reducing woodwaste. The research results showed that the average of the logging efficiency in PT Roda Mas Timber Kalimantan is91.41% with various for flat, sloping, rather steep, and steep topographies 90.22%, 91.75%, 90.91% and 90.03%respectively. The average of logging waste is about 1.395 m /tree in which 0.357 m /tree (25,58%) in posses goodquality. The average of logging waste is 1.395 m /tree, which consists of 0.357 m /tree (25.58%) of good quality; 0.610m /tree (43.77%) with natural defect condition, and about 0.428 m /tree (30.65%) of the poor quality.]]>
<![CDATA[STUDI FAKTOR PEMANFAATAN DAN LIMBAH PEMANENAN KAYU DI HUTAN ALAM PAPUA BARAT ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Wesman Endom]]>;
<![CDATA[Sona Suhartana]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 36 No. 2 (2018): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2018.36.2.67-84
<![CDATA[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.]]>
<![CDATA[UJI COBA REKAYASA ALAT UKUR DIAMETER POHON DI HUTAN ALAM ]]>
<![CDATA[Wesman Endom]]>;
<![CDATA[Soenarno]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 36 No. 2 (2018): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2018.36.2.101-112
<![CDATA[Trial test of tree diameter measurement device ‘wesyano’ was conducted in 2016 at a natural forest in Central Kalimantan. This paper evaluates five main components of the measurement device: roller measurement, telescopic stick, frame shaft, lid-scale meter, scale-meter, and its locker. Result on single and double measurements showed that wesyano had an accuracy of 0.98–0.99 with an efficiency level of 1–4 times faster than the phi-band measurement. Validated results indicated that wesyano was highly correlated with phi-band measurement for single (r = 0.978) and double (r = 0.982) measurements. There is no significant differences between single and double measurements. The study indicates that wesyano could be used for phi-band measurement substitute. The device was more practice, cheaper and more effective to be used mainly for forest inventory in natural forests which contain large stem diameter (≥ 50–100) and high position of buttress, (≥1.8 m) with high accuracy, efficien of and low cost.]]>
<![CDATA[PENETAPAN ANGKA STANDARD FAKTOR EKSPLOITASI HUTAN ALAM DAN POTENSI LIMBAH PEMANENAN KAYU SUB REGION PROVINSI KALIMANTAN TENGAH ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Yuniawati]]>;
<![CDATA[Dulsalam]]>;
<![CDATA[Sona Suhartana]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 39 No. 3 (2021): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2021.39.3.155-169
<![CDATA[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.]]>
<![CDATA[FAKTOR EKSPLOITASI PADA HUTAN PRODUKSI TERBATAS DI IUPHHK-HA PT KEMAKMURAN BERKAH TIMBER ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Dulsalam]]>;
<![CDATA[Wesman Endom]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 31 No. 2 (2013): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2013.31.2.151-160
<![CDATA[In timber harvesting, exploitation factor is implemented as the one parameters to determine the allocated annual production at the natural production forest. Currently, the value of exploitation factor as stipulated by the Ministry of Forestry that applies to all conditions of natural production forest exhibits large varying-topographies and in operation tends to be beavier than tost at either the fixed production forest or convertible production forest. The situation brought about a significant difference in the exploitation factors (EF) during the timber harvesting. In average the value of EF at the Licensed Natural Forest Concessionary PT. Kemakmuran Berkah Timber reached 0.92, while the EF at flat topography (0-8) was 0.93; at moderately sloping (9-15'), rather steep (16-25), and steep topographies (26-40) were all similar, i.e. 0.92.]]>
<![CDATA[FAKTOR KONVERSI LIMBAH PEMANENAN KAYU HUTAN TANAMAN DAN RENDEMEN PENGOLAHAN SERPIH KAYU ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Wesman Endom]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 34 No. 1 (2016): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2016.34.1.77-88
<![CDATA[Timber harvesting in forest plantations of PT Korintiga Hutani was undertaken using length limitation of 4.10 m and minimum diameter of 10 cm. These limitations have created numerous trunk wastes in the field. Harvesting efficiency improvement is being considered by converting the wastes into wood chips. However, the company has to pay a provision of forest resources to the government for each volumetric unit (m³) of the converting wood wastes. This paper examines conversion factors for estimating conversion values from staple meter (Sm) or weight (ton) into m³ of akasia (Acacia mangium), eukaliptus (Eucalyptus pellita) and waru (Hibiscus similis). Results show that conversion value of 1 Sm A. mangium wood waste is equal to 0.35 m³, or 1 ton of the same waste is equal to 1.98 m³; conversion value of 1 Sm E. Pellita is equal to 0.48 m³, or 1 ton of the waste is equal to 1.41 m³. Conversion value for 1 Sm H. similis is equal to 0.34 m³, or 1 ton of the waste is equal to 1.95 m³. Processing recovery of wood waste into chips is 94% for A. mangium and E. pellita while recovery of H. similis is 90%. Hence, conversion factor of wood chips in relation with the required waste is 1 Sm chips = 0.38 m³ wood waste or 1 ton chips = 2.09 m³ wood waste for A. mangium. Conversion factor for E. pellita is 1 Sm chips = 0.38 m³ wood waste or 1 ton chips = 1.51 m³ wood waste; conversion factor for H. similis is 1 Sm chips = 0.39 m³ wood waste or 1 ton chips = 2.16 m³ wood waste.]]>
<![CDATA[PRODUKTIVITAS DAN BIAYA PENGELUARAN LIMBAH PEMANENAN KAYU PADA HUTAN ALAM PEGUNUNGAN: STUDI KASUS DI PT. JATI DHARMA INDAH PLYWOOD INDUSTRIES KABUPATEN NABIRE, PAPUA ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Dulsalam]]>;
<![CDATA[Yuniawati]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 38 No. 3 (2020): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2020.38.3.173-188
<![CDATA[At present, logging activities have implemented Reduced Impact Logging (RIL) technology, but logging waste stilloccurs on average 17%. The logging waste has not been utilized because of the alleged high cost of production due toimproper wood harvesting method. This study aims to obtain data and information on productivity and skidding costsof wood harvesting waste in mountainous natural forest areas. The results showed that the cost of producing woodharvesting waste with the tree-length logging method at ± 2 hm skid distance was Rp 35,693/m3, but when usingthe conventional method is Rp 349,125/m3. The tree-length logging method can not only remove the main wood butalso free from branched wood waste (BBC) and trunk above the branch (BAC) till to landing site but also but it canincrease the efficiency of wood utilization. However, the application of the tree-length logging method resulted in adecrease in logging productivity of 16.47% and skidding of 14.41% at an average skid distance of 3 hm. The averageproductivity of logging in the conventional method is 62.514 m3/hour while the tree length logging method is 52.289m3/hour. The average productivity of skidding tree-length logging method is 17.301 m3/hour but the conventionalmethod is 18.249 m3/hour. For the tree length logging method to be implemented in the field, it is necessary to makechanges in the tariffs for felling and skidding wages following the reduced level of work productivity.]]>
<![CDATA[LACAK BALAK UNTUK VERIFIKASI UJI LEGALITAS KAYU PADA PEMANENAN KAYU HUTAN ALAM ]]>
<![CDATA[Soenarno]]>;
<![CDATA[Satria Astana]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 36 No. 1 (2018): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
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DOI: 10.20886/jphh.2018.36.1.47-58
<![CDATA[Currently, timber trade requires that wood products must come from legally and responsibly managed forests. In Indonesia, to prove that wood products are legal if they are equipped with Legitimate Certificate of Forest Product, V-legal mark and electronic label in the form of Barcode. One method of proving wood origin in timber harvesting is log tracking method through labeling. This study examines the accuracy of log tracking in a Timber Forest Product Enterprise of Natural Forest (IUPHHK-HA) PT. Sumalindo Lestari Jaya II in Mahakam Ulu District, East Kalimantan Province. The log tracking was accomplished by tracking the comformity between wood documents in production result report (LHP), the numbered tree label attached on the stump till the cruising result report (LHC) document. Methods of sampling of LHP wood documents were conducted purposively through sample plots in three different felling sites. Results showed that timber traceability based on the LHP document to the tree number label attached on the tree stump wae 100%. However the level of log traceability from LHP documents to LHC documents ranges from 85.7–100% with average of 96.2%. Mismatch information between timber documents on LHP, the stump and LHC was mainly caused by wrong group of wood species and tree diameter classes.]]>
