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KAJIAN PENGGUNAAN KAPASITAS TRAKTOR KOMATSU D85E- SS DALAM UPAYA PENINGKATAN PRODUKTIVITAS PENYARADAN Wesman Endom; Sukanda Sukanda
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This research was aiming at indentifying the tractor skidding capasity in logging operation in the natural production forest. The tractor observed was Komatsu D85E-SS. and in this study the specific gravity of 0.8 for all species was assumed.The results shows that the capasity of skidding was about 14. 7 ton or equal to 18, 40 m log. However, it was found that from 52 observations, 8% were done under the 20% capacity, 42% of the skidding were done under 21-40% capacity, 25% were done under 40% capacity and 8% were done by winching. .Those figures indicate that the skidder capacity has not yet fully utilized. Therefore, the possibility to increase the volume of skidding is widely open, meaning that the logging wastes can be overcome by skidding those above clear bole parts together with the main log.The cost of skidding per m3 compared with 20 years ago was found to be three times higher. The cost skidding per m3 was about Rp. 3225,- at the averege distance of 3,16 hm.

KAJIAN FAKTOR EKSPLOITASI BERDASARKAN JENIS POHON : STUDI KASUS DI SATU PERUSAHAAN HPH DI KALIMANTAN BARAT (A study on Exploitation Factor in Forest Harvesting Based on Trees Species : A case study in one forest concession holder in West Kalimantan) Wesman Endom; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 14, No 1 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.1.16 – 23

Natural production forests in Indonesia have been harvested since 1970. In carrying out the harvesting of the forests, the goverment used a parameter so called Exploitation Factor (FE) as a basic calculation of annual allowable production. Currently the value of FE is 0. 7 regardless the species. The value means that only about 70% of log volume can be extracted from the forest in the cutting operation.In this study an analysis of FE was carried out to see whether it is necessary to differentiate the value based on tree species. Data were collected from real logging activity in the forest. An analysis using Honest by Significant Difference test showed that in reality there is no signifi cant difference among the means of FE. This result justifies the use of single value of FE for all species.Keywords: Forest, harvesting, logs, conversion factor.

KAJIAN PENGGUNAAN LAHAN HUTAN DAN PERUBAHANNYA MENGGUNAKAN DATA CITRA SPOT LANDSAT DAN RADAR Wesman Endom; Haryono Haryono
Jurnal Penelitian Hasil Hutan Vol 22, No 2 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2004.22.2.95-111

To enhance effectiveness of natural resources evaluation an assessment on the trend of land- use and its impacts is necessary. This is needed by regions which are interacted each others and covering large areas. A remote sensing technology is a reliable and appropriate choice for such area. A study on the land-use assessment was employed using manual method through the implementation of Spot, Landsats, and Radar imageries. The results were as follows:1) Until the year 1980, the concession area situated at Long Nah, administratively under authority of PT Inhutani I. East Kalimantan were mostly still covered by virgin forest with occasional and scattered small villages2) Manual interpretation using imageries of Spot, Landsats and Radars disclosed the following results: (a) Spot imageries turned out to be 64. 7% as the correct figure and 35.3% as the false figure;, (b) Landsat imageries interpreted 53.3% as correct and 46.7% as false; (c) Radar imageris conducted in March and April 1998 revealed 38. 1% as correct and 61.9% as false.3) Changes forest land-use during the period 1980-1998 occurred in low-land dry forest andpartly in swampy forest, which were further converted to the plantation forest. Meanwhile, the changes for other land-uses among others agriculture were almost insignificant ( less than 3%). This is because soil layers in the corresponding land were thin and acidic rendering unsuitable for agriculture activities.4) In order to reduce high commission error, the appropriate number of strata relevant to the land-use interpretation should not be too detailed but adequately established as simply aspossible.

PENGAMATA PENEBANGAN DAN PENGANGKUTAN SAGU DI DESA TANJUNG KECAMATAN TEBING TINGGI PROPSI RIAU Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

ln indonesia Sago (Metroxylon sp) is one of the natural resources which is potenlally great enaugh for developing national income. The areas distribute over many places particularly in Irian. Jaya, Maluku, some parts of Sulawesi, Kalimantan and Sumatera, covering ± 6 00 000 ha.In Sumatera, sago grow in swampy area like South Sumatera, Jambi, Riau and Aceh. ln Riau the most famous producer sago area is Sab Districl of Tebing Tinggi of District Bengkalis . According to the last report of 1989, the total sago area in Sub District of Tebing tinggi is± 15 915 ha, and has producted sago of 156 500 ton.This paper discussing same aspects of technical harvesting of sago. which has preliminary observed in an area of the farmer as one of the sharing sago cooperation of Harmonis, that localed in Desa Tanjung. Sub District of Tebing Tinggi. Those aspects were felling, toping and branching and tranportalion with and addition of sago proccesing. The resul: showed that felling topping and branching and sago tranportation are carried out by group of felling operation wkich is consist of 6-8 men/group. the salary system is done by contract.The sagos are felled before flowering and each trees was cut wilh diameter ranged.from 49-64 cm and need ± 16,1 minutes/tree.the log then cutted after lopping and branching into 8-11 pieces depend on the tog length 1, 05-1 ,25 m/pieces. This pieces are called tual. Each tual then hauled using manual system as well as "nglebek" on a rail system of the wood. In average to haul of the distance ± 400 in from the felling site to sago industry was ± 30 minutes.The sago processing covered some aclivities of burking, slicing and flouring need± 4,5 minutes per tual. Therefore plus other delayed time with calculation 10 tual/tree, the total processing of one tree sago need 1 hour. The productivity of man power is able to finish of sago horvesting ± 1 tree/man. Using the wage of Rp. 400/tual, therefore the total salary is Rp, 4000/day.

KERUSAKAN TEGAKAN TINGGAL AKIBAT PEMANENAN KAYU PADA HUTAN TROPIS BERBUKIT DI KALIMANTAN TENGAH Soenarno Soenarno; Wesman Endom; Sofwan Bustomi
Jurnal Penelitian Hasil Hutan Vol 35, No 4 (2017): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Salah satu indikator pengelolaan hutan lestari adalah adanya dampak kerusakan tegakan tinggal yang ditimbulkan oleh kegiatan pemanenan kayu. Tulisan ini mempelajari kerusakan tegakan tinggal akibat pemanenan kayu di hutan tropis berbukit di Kalimantan Tengah. Pengamatan dilakukan dengan menggunakan plot contoh penelitian berukuran 200 m x 100 m yang ditempatkan secara sistematis pada tiga petak tebang terpilih dengan operator chainsaw yang berbeda tingkat kemahirannya. Hasil penelitian menunjukkan besarnya derajat kerusakan tegakan tinggal akibat pemanenan kayu berkisar antara 19,37 – 34,9% dengan rata-rata 24,37% termasuk kategori kerusakan tegakan tingkat ringan. Kerusakan tegakan tinggal rata-rata akibat penebangan adalah 16,27% dan akibat penyaradan kayu sebesar 8,1%. Operator chainsaw yang tidak terlatih/kurang berpengalaman cenderung mengakibatkan kerusakan lebih besar dibandingkan operator chainsaw yang sudah terlatih. Tipe kerusakan tegakan akibat penebangan baik pada areal yang landai, agak curam maupun curam didominasi oleh patah batang pohon. Tipe kerusakan tegakan tinggal akibat penyaradan umumnya berupa pohon yang roboh/miring. Kerusakan tegakan akibat pemanenan kayu dapat dikurangi dengan pengawasan yang lebih baik di areal penebangan dan memberikan pelatihan dan/atau penyegaran kepada operator chainsaw dan traktor sarad mengenai teknik penebangan dan penyaradan ramah lingkungan.

KAJIAN UJI COBA PENGELUARAN KAYU PINUS DENGAN SISTEM KABEL LAYANG P3HH20 DI KPH SUMEDANG, PERUM PERHUTANI UNIT III JAWA BARAT Zakaria Basari; Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 16, No 3 (1998): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1998.16.3.162-176

Sistem kabel layang P3HH20 adalah alat yang dirancang khusus untuk. mengekstraksi sortimen kayu yang berukuran kecil (diameter20-40 cm) dengan menggunakan yarder. Alat ini pernah diuji coba di KPH Sukabumi. Setelah diadakan perbaikan lalu diadakan uji coba kedua di KPH Sumedang. Tujuan penelitan adalah untuk mengetahui produktivitas kerja, biaya pengeluaran kayu dan keterbukaan permukaan tanah hutan.Produkttivitas kerja dihitung berdasarkan prestasi kerja per jam. Biaya operasi dihitung berdasarkan biaya tetap dan biaya tidak tetap. Dampak dihitung berdasarkan luas keterbukan tanah yang tergeser sebagai akibat kegiatan ekstraksi kayu.Hasil penelitian produktvitas kerja rata-rata mencapai 13, 72 m3/hari atau rata-rata 1, 69 m3/jam,dengan waktu penarikan rata-rata 4, 17 menit/rit untuk jarak sejauh rata-rata I 09, 66 meter. Biaya operasi sebesar Rp 25.353/m3. Keterbukaan tanah lantai hutan 1,38 %. Berdasarkan kenyataan ini maka alat ini cukup efektif dan layak digunakan terutama pada daerah-daerah yang sulit. Namun demikian, beberapa kelemahan yang masih perlu diperbaiki lebih lanjut ialah : (a) sistem rem yang lebih baik dan kuat, (b) sistem starter mesin dengan sistem listrik dan (c) dapat dikombinasikan dengan seperangkat alat Ias listrik, sehingga bila terjadi sesuatu kerusakan dapat diperbaiki langsung di tempat.

PERBAIKAN TEKNIK PENEBANGAN UNTUK MINIMASI LIMBAH PEMBALAKAN DENGAN CARA PENURUNAN TINGGI MULUT TAKIK REBAH Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 14, No 7 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.7.253-263

Felling technique in logging operation affect both quantity and quality of logs produced. Improperfelling operation may damage the wood in various ways such as splitting, splintering, and breakage. It leaves more wood wastes in the forest. This study was attempted to reduce wood wastes in felling operation by improving felling technique i.e. through reducing height of undercut.The results showed that the reduction of height of standarized undercut by 30-60% can increase the volume of log produced around 1 %. Calculation of the new method was found that additional cost is relatively small only about Rp. 344,13/m3. Application of this improvement technique, however need a conclusive marketing system.

KAJIAN PRODUKTIVITAS ALAT MUAT KAYU KPH2 DI BKPH GUNUNG HALU, KPH BANDUNG SELATAN PERUM PERHUTANI UNIT III JAWA BARAT Zakaria Basari; Sona Suhartana; Wesman Endom; Dulsalam Dulsalam; Yayan Sugilar
Jurnal Penelitian Hasil Hutan Vol 20, No 2 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2002.20.2.165-176

The KPH2 a type of equipment for wood loading into truck was designed by Forest Engeenering and Forest Harvest Divition Forest Products Research Centre Bogor. An operation trial has been done in BKPH Gunung hatu, Bandung Selatan Forest District, Perum Perhutani Unit III West Java.The objective of this study is to see the productivity and operation cost of loading rasamala log ( Altingia excelsa) into truck. using a helper KPH2 and by manual system.The results showed that productivity of KPH2 equipment and manual were 0.02 m3 minute/m and 0,04 m/minute/m, with operation cost of Rp 18.523,00/m3 and Rp 2.000,00/m3 respectively.

KLASIFIKASI KERUSAKAN TEGAKAN TINGGAL, EROSI TANAH HUTAN DAN IKLIM MIKRO UNTUK PENETAPAN AMBANG BATAS DALAM PEMANENAN TEBANG PILIH DI HUTAN ALAM Wesman Endom; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 19, No 2 (2001): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2001.19.2.69-88

The logging impact on wood harvesting operation at natural forest is an important element that should be pay attention by all people to get sustainable forest management. This information is needed in order the forest damaged can be maintained to achieve health forest recovery of the togged forest area and high potency, so we can do the next harvest with a similar volume and quality or even more. That is our hope and sustain continuously.To achieve this, the criteria and size of threshold forest damages is required. There is 3 main group of damages to be known i.e. threshold of residual stand damage, threshold of forest soil damage and threshold of micro climate.Based on consideration that in the reality in general was found logging impact still high so because globally in the world asking logging with friendly it is essential to provide a limit of forest damage. Some activities that may produce heavy forest damage was road construction, felling, skidding and log yard establishment.

PENYADAPAN GETAH PINUS MERKUSII DENGAN MENGGUNAKAN BEBERAPA POLA SADAP DAN TINGKAT KONSENTRASI ZAT PERANGSANG Ishak Sumantri; Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 6, No 3 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1989.6.3.152-159

Three methode for tapping pine tree resin. i.e., 3 x 4 cm, 1,5 x8 cm and Indian tapping method were investigated in Cianjur Forest District in 1988. To increase the resin yield, sulphuric acid (H2S04) with 0%, 15 %, 25 %, and 35 % con- cetratation were used. Each tapping method was applied on fourty pine trees. The results are as fallows :1.Using stimulant with the three methods of tapping increase the resin yield. 2.From the. three tapping methods applied, Indian tapping method showed the highest resin yield, i.e. 12. 72 gram/tree/day.3.Indian tapping method gives Rp 5/kg profit. This value was found by subtracting selling price (Rp, 150/kg) with production cost (Rp. 145/kg).

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