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Zakaria Basari
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ANALISIS PRODUKTIVITAS KERJA EKSTRAKSI KAYU DENGAN SISTEM KABEL LAYANG DALAM SISTEM TEBANG HABIS DI HUTAN JAWA TIMUR Zakaria Basari; Djoko Sumanto; Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 15, No 3 (1997): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9474.661 KB) | DOI: 10.20886/jphh.1997.15.3.169-189

Abstract

Salah satu sistem pengeluaran kayu bulat yang lebih produktif di dalam kegiatan pembalakan di daerah pegunungan adalah sistem kabel layang. Alat sistem kabel layang yang diteliti adalah jenis mesin yarder merek Isuzu berkekuatan 115 HP. Penelitian bertujuan untuk mengetahui produktivitas kerja.biaya ekstraksi dan aspek ekologis.Produktivitas kerja dilakukan dengan cara menghitung prestasi kerja per jalur, biaya ekstraksi kayu mencakup biaya kepemilikan alat per jam dan biaya operasi per jam , aspek ekologis menghitung dampak keterbukaan lantai permukaan hutan. Hasil pengamatan menunjukkan bahwa produktivitas kerja rata-rata 2.17 m3/jam atau 17.29 m3/hari dengan waktu kerja efektif 5,77 jam/hari. Biaya ekstraksi sebesar Rp 18,596/m3. Perusakan lapisan permukaan tanah sebesar 205,8 m2/ha atau hanya sebesar 1,75 %.
BEBERAPA MASALAH ERGONOMIK DALAM KEGIATAN PENEBANGAN DI KALIMANTAN BARAT Maman Mansyur Idris; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 1, No 3 (1984): 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.1984.1.3.15-21

Abstract

            Preliminary study on ergonomics of forest concession was emphasized on mechanic operator activities with 62 respondents.            The quetioneire consits of ten problem areas, namely audiometry, pollution, vibration, phisycal work load, logging equipment operation, work capacity, psychology of work load, accident, safety, and the inventory of past ergonomic research.            In general, the research indicated that the forest concession holders were not well aware of the importance of ergonomic aspect in their ventures. 
ANALISIS BIAYA PEMANENAN KAYU BULAT SISTEM KEMITRAAN HPH - KOPERASI DESA DI KALIMANTAN TENGAH Zakaria Basari
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.2004.22.2.113-122

Abstract

To minimize illegal logging in natural production forest, one of concession forest in Kalimantan has initiated to do a joint bussines logging with a community wellfare cooperative. The aim of the study was to measure productivity of extraction, operation cost, joint bussines income, investament and income of Koperasi Desa.The observation area was located at PT Tanjung Raya Intiga (PT TRI), Barito Hulu Puruk Cahu Forest District, of Central Kalimantan Province in 2001.The results showed that logging production achieved was 892,9 m3, log extraction productivity 99 m3. hm/hour, operation cost Rp 14,227/m3, logs selling revenue Rp 31,235,950,-, investment cost Rp 2,901,017.- and cooperative income Rp 28,901,017.-.The financial income was distributed to local community (34%), wages for cooperative bussines managers (29%), village contribution (4,5%), administration fee for cooperative (5%) and government officers (27%).The local people and the forest concessioners could share the benefit of cooperation in naturalproduction forest management.
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

Abstract

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.
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

Abstract

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

Abstract

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.
EKSTRAKSI KAYU DENGAN SISTEM KABEL LAYANG THUNDERBIRD TIY70 PADA AREAL HUTAN PRODUKSI TERBATAS DI KALIMANTAN TIMUR Zakaria Basari; Maman M Idris; Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 17, No 1 (1999): 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.1999.17.1.21-39

Abstract

Dewasa ini kegiatan ekstraksi kayu menggunakan sistem kabel layang di Hutan Produksi Terbatas (HPT) yang  bertopografi berat merupakan salah satu pilihan untuk upaya yang tengah dicoba untuk memperkecil kerusakan hutan.  Penelitian ini bertujuan untuk  mengetahui produktivitas kerja, biaya ekstraksi kayu dan dampak ekologis penggunaan sistem kabel layang dengan yarder Thunderbird TTY 70.Produktivitas  kerja dilakukan dengan cara  menghitung prestasi kerjanya per jam. Biaya ekstraksi  kayu dihitung berdasarkan biaya tetap dan biaya  operasi alat  serta produktivitas kerjanya.  Dampak  ekologis  diukur  dengan  cara  menghitung  keterbukaan  tajuk pohon  dan permukaan lantai  hutan sebagai akibat penebangan dan penyaradan kayu .Hasil penelitian  menunjukkan bahwa produktivitas kerja rata - rata sebesar 9,81 m3/rit atau 12,4 m3/jam.  B iaya tetap alat sebesar Rp. 431.249/jam, biaya operasi sebesar Rp. 43.128/jam  dan biaya ekstraksi kayu per m3 sebesarRp 39.000/m3.  Keterbukaan tajuk rata - rata 4.051 m2/jalur, keterbukaan permukaan  lantai tanah hutan 107,82  m2 atau 1,08  % per  hektar, kerusakan tegakan tinggal akibat penebangan dan penyaradan  rata-rata sebesar 12,27 %/ha. Kelebihan penggunaan alat dalam operasi pemanenan ini adalah ramah lingkungan sedang kelemahannyaharganya sar:gat mahal.
PRODUKTIVITAS PENGELUARAN DOLOK KAYU TUSAM DENGAN SISTEM KABEL LAYANG IWAFUJI 115 Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 20, No 1 (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.2002.20.1.20-34

Abstract

This report deals with assessing the performance of  tusam (Pinus merkusii Jungh et de Vries)  log - removal using particular skyline system.  The assessment in this regard is pointed out by the aim of this study, i.e.   observing the productivity and operation cost of such removal.Related with those cases, investigation has been conducted and located in Cikajang Sub Forestry District,  Garut Forest District,  under the Indonesian State Forest Enterprise in West Java.  The  topographical location has a slope at about 5° - 50°  with altitude ranging around 900 - 1000 m above sea level.  The skyline machine used was a yarder manufactured in Japan with the brand name as "IWAFUJI" and engine power at115 HP.  The harvesting or removal of tusam  log was done using a clear-cutting system.The result revealed that the removal productivity varied from 25.07  to 43.17  m3  hm per hour with average at 33.33  m3 hm per hour. Meanwhile,  the corresponding production cost was Rp.  16,879.3 per m3.   It turned out that such productivity (Y) was significantly affected by real removal frequency  (X),  which further could be expressed in regression equation Y = 1.0659  + 0.1245 X (r=0.5852)  with F-calc = 4.15 greater than F-table = 2.1).  The opening soil was 5 percent.
STUDI PERBAIKAN CARA PENYADAPAN KOPAL DI KPH SUKABUMI Soenarno Soenarno; Maman Mansyur Idris; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 1, No 3 (1984): 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.1984.1.3.34-38

Abstract

Copal from Agathis tree has been one of  important  forest  products, not only as export commodity but also as raw material for some induatries. In the last few years however production  in  this country  began to decrease, due to inefficient  tapping by the forest worker.Because of  this reason a study on the tapping procedure is necessary. Thia report deals with a preliminary study on  the present  “quarre”  type  of  tapping procedure commonly  adopted  by the forest  worker. The locality chosen was Gede Barat Sub forest district at Sukabumi, West Java.Three factors were chosen  for the tapping study, namely the effect  on of resin productivity  of the location of the wound with respect to west and east direction (factor A), time of tapping (factor B) and type of wound covering (factor C).  The result of this study show that :Covering of tap wound does not cause incoveniences   to the worker.Resin productivity is not significantly affected by the wound location.The highest production of the resin per tree comes from the wound cut in the morning and covered with black coloured polyethelene sheet.       
PERBANDINGAN PENYARADAN KAYU DENGAN SISTIM MANUAL DAN EKSAVATOR DI HUTAN RAWA BAGIAN Ill : KAJIAN TEKNIS, EKONOMIS DAN EKOLOGIS Wesman Endom; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 19, No 1 (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.2001.19.1.19-39

Abstract

Modified excavator is one of heavy equipment that might be useful and environmentally friendly to be used for operational logging extraction especially in swampforest. It is therefore besides convenient and powerful, it is also helpful as an effective alternative in anticipating the weakness of manual system which is called "kuda-kuda'.Related to the case, a study by implementing both manual system and excavator was done in a forest concession, i.e. PT. Inti Prona, at cutting block covering the 1997/1998 area that located under management of Sub Forest District Dumai, Riau Province. The study covered aspects of extraction productivity, extraction cost, and logging impact on the possible damage of residual forest stands due to the implementation of both systems.The result showed that the average of logs extraction productivity was 16.80 m3.hm per hour. With respect to the ecological impacts, it was found that residual forestst and damage occurred at 17.29% per ha (at pole stage) and 17.17% per ha (at tree stage). Further, operation cost hauling was assessed at Rp 5,600 per m3 of extracted log.Meanwhile, manual log extraction revealed productivity at 2,46 m3.hm per hour. Ecological impact due to constructionsof manual road extraction system and landing site (TPn) was the occurrence of damage to pole and tree stages at 28,25% and 34,33%, respectively. In the same occasion, cost of manual extraction was about Rp 23.000 per m3.Keywords : excavator, productivity, damage, tree, poles and extraction cost
Co-Authors Djoko Sumanto Dulsalam Dulsalam Maman M Idris Maman Mansyur Idris Marolop Sinaga Soenarno Soenarno Sona Suhartana Wesman Edom Wesman Endom Yayan Sugilar Yuniawati Yuniawati