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Sona Suhartana
Pusat penelitian dan pengembangan hasil hutan
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Journal : Jurnal Penelitian Hasil Hutan

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KERUSAKAN TEGAKAN TINGGAL DAN PRODUKTIVITAS KERJA PADA TEBANG PENJARANGAN SECARA SELEKTIF; KASUS DI SATU PERUSAHAAN HTI DI SUMATERA SELATAN Sona Suhartana; Dulsalam Dulsalam
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.2001.19.1.9-17

Abstract

The study was carried out at a timber estate company in South Sumatera in 1999. The aim of the study is to know the effect of selective thinning to residual stand damage and work productivity.Data collected were: thinned and damaged trees; residual stand; thinning time; diameter and length of thinned trees. The data was analyzed by tabulation.The results of the study showed that the average of residual stand damaged and the average of work productivity in selective thinning are respectively 6.22% and 56.167 m3/hour.Key words : Selective thinning, residual stand damaged, work productivity.
KEADAAN JALAN SARAD DAN POHON DITEBANG PADA TEGAKAN TINGGAL DI KAWASAN SEBUAH PERUSAHAAN HUTAN DI RIAU Jurnalis Thaib; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): 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.1991.9.4.144-149

Abstract

An investigation of skidding performance was conducted at one Forest company in Riau,  in 1988. The results showed that stand density  rangea  from  126 to 190  trees with an average of 158 trees/ha, soft soil .without any rock, land slope ranges from 6,8 to  20,0 % and the trees felled from 2 to 8 with an average of 5 trees/ha. Also it was found that the length of productive skidding road ranges from 91,0  m to 329,8 m with an average of 210,4 m /ha while the length of unprodue- tive skidding road vanes from 2,5 m to 49,9 m with an average of 26,2 m/ha. The ratio between the lengths of unproductive and productive  skidding road is 12,5 %. By considering tractor's life time 20.000   hours,  around  2.500  hours of them are  unproductiue, Relating this figure with owning and operating costs, those unproductive skidding road surely cause quite  large loss.  Besides, the unproductive tractor movements also cause land exposure to the amount of 122,5 m2/ha. All the above disadvantages can be minimized by planning akidding roads ahead and  strictly controlling the operation.
KAJIAN KEBERADAAN TEGAKAN TINGGAL DAN KETERHUKAAN LABAN. PADA KEGIATAN PENEBANGAN DAN PENYARADAN DI SUATU PERUSAHAAN HUTAN DI KALIMANTAN TENGAH (The study of residual stand condition and ground exposure caused by felling and yanling ooerations at a forest concession in central Kalimantan) Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 11, No 3 (1993): 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.1993.11.3.117-121

Abstract

The damages of soil and vegetation caused by felling and yarding operations are unavoidable eventhough the operations are done very carefully.The conclusions of several previous studies related to the problem showed that residual stand damages and ground exposure are influenced by logging operation, because felling and yartling operations are carried out without proper planning.The aim of the study is to find the level of residual stand damage, total trees felled per unit area, and ground exposure caused by felling and yarding operations.The study was carried out in a forest concession of PT Kayu Tribuana Rama in Central Kalimantan in 1991. the gathered data were analysed by simple linier regression analysis.1.The average . of residual stand damage caused by felling and yarding operations is 11.1% for the average total trees felled of 5.9 trees/Ha.2. the effect of total trees felled per unit area on residual stand damage is highly significant. logging operations in Sleeper slope could increase residual stand damage.3. The average of ground exposure caused by logging operation is 19. 7% .for the average total trees felled of 5. 9 trees/ha.4. The effect of total trees felled per unit area cm ground exposure is not significant. logging operations in the company is not planned to comply with TPTI regulations.
PENGARUH PEMANENAN HASIL HUTAN TERHADAP TINGKAT KERUSAKAN. TEGAKAN TINGGAL PADA DUA HAK PENGUSAHAAN HUTAN (HPH) DI KALIMANTAN BARAT (The effect of logging to residual stand damages in two forest concessions in West Kalimantan) Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 11, No 4 (1993): 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.1993.11.4.153-156

Abstract

Disturbed soil and vegetation caused by logging operation is difficult to be avoided, even in good logging operation.Past studies related to this problem.  shows that forest  concessions in Sumatera and Kalimantan used Indonesia Selective Cutting System (TPTI) as a basic activity in logging operation. However, because of the weakness of goverment control activity, most of the companies were looking for  financial benefit only and neglect the sustainability of the forest.The aim of this study is to assess the number of commercial trees (diameter 20 m and up) damaged during logging operation.The study was carried out in two forest  concessions:  PT. Batasan/A and PT. Tanjungpura Bhakti/B in West Kalimantan,The results shows that :1.   The average percentage  of commercial trees damaged of diameter 20.  cm and up during  logging operation   are 4. 6  %  in A concession and 5. 6 % in B concession.2.   The average number of trees in concession A are 8. 9 trees/ha while in concession B is 7. 8 trees/ha.
PENGARUH PEMBUANGAN BANIR DALAM PENEBANGAN POHON TERHADAP EFISIENSI PEMUNGUTAN KAYU (Study kasus di suatu perusahaan hutan di Kalimantan Barat) Sona Suhartana; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 13, No 1 (1995): 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.1995.13.1.19-26

Abstract

This paper presents  the results  of the study  of  the  impact of buttress cutting in tree felling on harvestring efficiency.  The case study was carried  out in PT Kurnia   Kapuas Plywood in West Kalimantan in  1994.  771e aim of the  study is to know the influence of buttress cutting on wood haversting efficiency.the  data were analysed by using  the I-test.the result of study shows that average of wood harvesting efficiency by cullting buttress is 68.1 % and without cutting buttress is 66.7 %
PENGARUH PENEBANGAN TERKENDALI DAN KONVENSIONAL TERHADAP KERUSAKAN TEGAKAN TINGGAL DAN PRODUKTIVITAS KERJA Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 19, No 4 (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.2001.19.4.219-230

Abstract

The study was carried out at a forest company in West Kalimantan in 2000. The aim of the study is to know the effect of controlled and conventional felling to residual stand damage and work productivity.Data collected were: felled and damaged trees, trees with diameter of 20 cm and up, diameter and length of log, and felling time. The data was analyzed by t-test.The results of the study showed:I) The average of residual stand damaged is 7.05% for the controlled felling and 11.75% for conventional felling. This difference of 4.70% is significant.2) The average of work productivity were 17.462 m3/hr for the controlled felling and 24.094m3/hr for conventional felling. This difference of 6.632 m3/hr is highly significant. Key words: residual stand damages, felling productivity, controlled felling technique, conventional felling technique
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. 
PENGARUH FREKUENSI MAKAN TERHADAP JAM KERJA PENEBANG JATI DI KPH JOMBANG Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2483.983 KB) | DOI: 10.20886/jphh.1987.4.3.17-20

Abstract

One of heavy work in the forestry activity in Indonesia  is manual  tree felling  of the teak.  This work needs much physical  labor.  Grandjean (1982) states that an extreem  physical  exertion  needs energy about  4,500 kcal/day.In order to continue  teak production it is needed to improve welfare of  the laborer by giving a better nutrition.A study  was conducted  to evaluate the effect of calorie intake on the performance  of the laborer and data were analyzed by using tabulation. The result showed that eating frequency are highly significant for teak tree fellers productive  working hour, age group of  18-40 years  with their average productive  working hours were 5 hours, 9 minutes and 29 seconds for  two times eating  frequencies.  Further  the average of 6 hours, 21 minutes and 41 seconds for  three times eating  frequencies,  and for age group 40 years up were 4 hours, 37 minutes and 25 seconds for  two times eating frequencies  and 5 hours,  10 minutes  and 36 seconds for  three times eating frequencies 
PENYARADAN TERKENDALI UNTUK MINIMASI PENGGESERAN LAPISAN TANAH ATAS DAN KETERBUKAAN LAHAN: KASUS DI SUATU PERUSAHAAN HUTAN DI KALIMANTANTENGAH Sona Suhartana; Dulsalam Dulsalam; Maman M Idris
Jurnal Penelitian Hasil Hutan Vol 17, No 4 (2000): 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.2000.17.4.209-219

Abstract

Tulisan ini mengetengahkan hasil penelitian tentang penggeseran lapisan tanah atas dan keterbukaan lahan akibat kegiatan penyaradan kayu terkendali. Penelitian telah dilakukan di satu perusahaan hutan di Kalimantan Tengah pada tahun 1998. Tujuan penelitian adalah untuk mengetahui pengaruh pemanenan terkendali terhadap penggeseran lapisan tanah atas dan keterbukaan lahan.Data yang dikumpulkan adalah : jumlah pohon ditebang, jumlah pohon berdiameter 20 cm dan ke alas, kedalaman penggeseran lapisan tanah atas dan keterbukaan lahan. Data dianalisis dengan menggunakan uji-t.Penelitian menghasilkan hal-hal sebagai berikut:1. Penggeseran lapisan tanah atas rata-rata akibat penyaradan terkendali untuk kelas kelerengan: 0-15%; 15-25% dan > 25% berturut-turut adalah 8,1 mm; 11,7 mm dan 16,8 mm per 100 m panjang jalan sarad. Untuk penyaradan konvensional adalah 9,7 mm; l2,84 mm dan l8,7 mm per 100 m panjang jalan sarad. Terjadi pengurangan sebesar 1,6 mm pada kelas kelerengan 0-15 mm (berbeda sangat nyata).2.   Derajat keterbukaan lahan rata-rata akibat penyaradan terkendali adalah 15,81% dan 21,21% untuk penyaradan konvensional. Terjadi pengurangan keterbukaan lahan sebesar 5,4% (berbeda nyata).
PENEBANGAN SERENDAH MUNGKIN UNTUK MENINGKATKAN PRODUKSI KAYU : STUDI KASUS DI DUA PERUSAHAAN HUTAN DI KALIMANTAN TIMUR Sona Suhartana; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 14, No 9 (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.1996.14.9.374-381

Abstract

Tulisan ini mengetengahkan hasil-hasil penelitian tentang produktivitas penebangan dan tingkat pemanfaatan kayu yang terjadi dengan teknik penebangan serendah mungkin. Penelitian dilakukan di dua perusahaan hutan di Kalimantan Timur pada tahun 1996. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dari penerapan teknik penebangan serendah mungkin terhadap produktivitas dan tingkat pemanfaatan kayu yang terjadi. Hasil penelitian dibandingkan dengan teknik penebangan konvensional.Hasil-hasil penelitian menunjukkan sebagai berikut :1. Rata-rata produktivitas penebangan adalah 42,16 m3/jam untuk teknik penebangan serendah mungkin dan 49,96 m3/jam untuk teknik penebangan konvensional. Terjadi penurunan produktivitas sebesar 7,8 m3/jam.2. Rata-rata tinggi tunggak pada teknik penebangan serendah mungkin adalah 37,6 cm dan teknik penebangan konvensional adalah 56,6 cm.3. Rata-rata volume limbah tunggak pada teknik penebangan serendah mungkin adalah 0,21 m3/pohon (3,34%) dan pada teknik penebangan konvensional adalah 0,40 m3/pohon (4,54%). Rata-rata volume kayu yang dimanfaatkan adalah 6,08 m3/pohon (96,66% dari rata-rata volume pohon yang ditebang sebesar 6,29 m3/pohon) untuk teknik penebangan serendah mungkin dan 8,41 m3/pohon (95,45% dari rata-rata volume pohon yang ditebang sebesar 8,81 m3/pohon) untuk teknik penebangan konvensional. Terjadi peningkatan pemanfaatan kayu sebesar 1,20%.4. Teknik penebangan serendah mungkin sebaiknya diterapkan di lapangan karena dapat meningkatkan pemanfaatan kayu.
Co-Authors Djaban Tinambunan Dulsalam Dulsalam Ishak Sumantri Jurnalis Thaib Maman M Idris Maman Mansyur Idris Maman Mansyur Idris Marolop Sinaga Soenarno Soenarno Weman Endom Wesman Edom Wesman Endom Yayan Sugilar Yuniawati Yuniawati Yuniawati Zakaria Basari