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Application of Conventional and Improved Techniques in Felling and Skidding to Residual Stand Damages Yuniawati; Andini, Sarah; Herni Ningrum, Mutia
Jurnal Manajemen Hutan Tropika Vol. 29 No. 3 (2023)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.29.3.234

Felling and skidding are essential in the timber extraction process. But on the other hand, residual stand damage can’t be avoided. This study aimed to analyze the impact of conventional and improved felling and skidding techniques on residual stands in natural forests. Three observation plots were developed to identify the types, numbers, and criteria of residual stand damage due to both techniques. The criteria were categorized as a) minor damage (<25%), b) moderate damage (25–50%), and c) major damage (>50%). It showed that the conventional felling and skidding technique caused damages of 14.92% dominated by tree crown damage and 16.70% dominated by stem wounds, respectively. The residual stand damage due to conventional felling and skidding technique was 31.62% categorized as medium damage. Meanwhile, improved felling and skidding techniques caused damage of 9.89% dominated by broken trees, and 10.27% dominated by stem wounds, respectively. The residual stand damage due to improved felling and skidding technique was 20.16% categorized as minor damage. The improvement techniques can minimize residual stand damage by 36.24%. Therefore, a good understanding of forest concessionaires regarding RIL principles is necessary for achieving sustainable timber harvesting

Implementation of Leech Therapy to Reduce Pain in Patients with Circulatory Problems at Griya Sehat Muslimah Srengseng Kembangan, West Jakarta Alfian; Yuniawati
JIKO (Jurnal Ilmiah Keperawatan Orthopedi) Vol. 8 No. 1 (2024): JIKO (Jurnal Ilmiah Keperawatan Orthopedi)
Publisher : Unit Penelitian dan Pengabdian Masyarakat STIKES Fatmawati Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46749/rvm2eg90

Circulatory disorders are a health problem that often causes chronic pain and reduces quality of life. Leech therapy is a traditional method that has the potential to improve circulation and reduce pain through the natural anticoagulant effect of leech saliva. This study aims to evaluate the effectiveness of leech therapy in reducing pain in patients with circulatory disorders at Griya Sehat Muslimah Srengseng Kembangan, West Jakarta. This study was a quasi-experimental study with a pre-test and post-test approach in 12 patients with circulatory disorders. Each patient underwent leech therapy three times over two weeks. Pain intensity was measured before and after therapy using a Visual Analog Scale (VAS). The results showed a significant decrease in pain intensity after therapy. The average reduction in pain on the VAS scale was 3.7 points after three treatments, indicating that leech therapy is effective in reducing pain in patients with circulatory disorders. Leech therapy has been proven effective in reducing pain in patients with circulatory disorders. This therapy can be a non-pharmacological alternative for managing pain in patients with circulatory disorders

POTENSI SIMPANAN KARBON DAN EMISI CO2 AKIBAT PENEBANGAN DI HUTAN ALAM PAPUA Yuniawati; Dulsalam; Sarah Andini
Jurnal Penelitian Hasil Hutan Vol. 40 No. 2 (2022): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2022.40.2.61%E2%80%9373

Forests as a place for carbon sequestration will be a source of emissions if there are no more photosynthetic plants to store carbondioxide (CO2) gas. CO2 gases that spreads in atmosphere can affect global climate change. Uncontrolled timber harvesting innatural forests has a negative impact on the potential for carbon absorption and CO2 emissions. This study aimed to analyze thepotential for carbon storage and emission due to felling in natural forests. The research method was carried out destructively andnon-destructively using data on potential stands before felling and the potential for trees to be felled on three logging compartmentsby making nine sample observation plots (PCP) in three selected felling plots within the natural forest concession area, namely plotsnumbered CC 47, K47, and L 47. Each PCP was a rectangular plot measuring 2 ha (200 x 100 m2). The results showed thatthe natural forest stand structure in the study location formed an inverted J letter, where the stands with a diameter class of 60 cmand above had a lower stand volume than other diameter classes. Carbon storage in the stand before felling was 21.07 ton C/ha.The potential for carbon storage decreased when 144 trees were felled, resulting the reduction was 18.49 ton C/ha, causing apotential carbon emission of 67.86 tons CO2-eq. After felling, the potential for carbon storage was decreased or remained by 2.57ton C/ha so that the potential for emission in the post-felling area was 9.43 tons CO2-eq.

PENGARUH PERBAIKAN METODE PEMBAGIAN BATANG TERHADAP WAKTU KERJA DAN PRODUKTIVITAS PENEBANGAN HUTAN ALAM PRODUKSI: STUDI KASUS DI PT. DWIMAJAYA UTAMA Soenarno; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 37 No. 1 (2019): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2019.37.1.13-32

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.

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

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

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.

PENGGUNAAN RANTAI SEBAGAI ALAT BANTU MENGURANGI SELIP DALAM PENGANGKUTAN KAYU Yuniawati; Dulsalam; Sukadaryati
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.2013.31.3.228-232

The use of trucks in log hauling has many advantages, however tire slip can pose serious problem. Tire slip is not onlyloss in term of log production efficiency, but also damaging the soil road surfaces. Tire chain is one of alternative method toavoid tire slip. This paper studies to find out the slip and the effect of the use of tire chain into the soil damage. The resultsshowed that the use of tire chain was able to reduce the average of tire slip by 95.98%. The average tire slip in normal tirewas 24.85% in the 82.82% moisture content, while the slip in chain added tire was 12.68% in the 84.63% moisturecontent. The use of tire chain can reduce slip and the depth of tire tracks significantly

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

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).

PRODUKTIVITAS, EFISIENSI, DAN BIAYA PENEBANGAN SILVIKULTUR INTENSIF PADA SATU PERUSAHAAN DI KALIMANTAN TIMUR Dulsalam; Sukadaryati; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 36 No. 1 (2018): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2018.36.1.1-12

Currently, timber production and biodiversity of natural forest are decreasing. The Ministry of Forestry has put an effort to improve timber production by applying silviculture system namely as Indonesian Intensive Selective Cutting (TPTII) which includes felling technique, land preparation and tree planting. This paper studies productivity, efficiency and felling cost based on TPTII system applied in one of logging company at East Kalimantan by comparing conventional technique and reduced impact felling technique. Results revealed that felling productivity of the conventional technique ranged from 33.74 – 39.87 m3/hour with an average of 36.24 m3/hour which were higher than those of reduced impact felling technique with variation of 28.30 – 36.23 m3/hour and average of 32.8 m3/hour. Felling efficiency of the conventional technique ranged from 84.03 – 88.2% with an average of 86.56%, which were lower than those of the reduced impact felling with variation of 88.75–90.12%, average of 89.36%. Felling cost of the conventional felling technique ranged from Rp1,712 – Rp2,023/m3 with an average of Rp1,8936/m3, lower than those of reduced impact felling technique which varied from Rp1,884 – Rp2,412/m3, and average of Rp2,104/m3. The reduced impact felling technique caused lower felling productivity, however it also improved felling cost and increased felling efficiency. The reduced impact felling could increase benefit as much as Rp321.57 million in a year.

PRODUKTIVITAS DAN BIAYA PENGELUARAN LIMBAH PEMANENAN KAYU PADA HUTAN ALAM PEGUNUNGAN: STUDI KASUS DI PT. JATI DHARMA INDAH PLYWOOD INDUSTRIES KABUPATEN NABIRE, PAPUA Soenarno; Dulsalam; Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 38 No. 3 (2020): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2020.38.3.173-188

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.

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