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Jurnal Penelitian Hasil Hutan
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Articles 4 Documents
Search results for , issue " Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan" : 4 Documents clear
FAKTOR EKSPLOITASI KAYU RAMIN (GONYSTYLUS BANCANUS MIQ) Sinaga, Marolop; Dulsalam, Dulsalam; Simarmata, Sampe Radja
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2874.965 KB) | DOI: 10.20886/jphh.1985.2.3.19-22

Abstract

This  investigation  is carried out  in the Central Kalimantan  and  West Kalimantan  areas at three logging companies. The purpose  of  this  investigation is to determine the  exploitation  factor  for  Gonystylus bancanus Miq.The  knowledge of  exploitation  factor will  help logging  companies in  the planning  and  control  of production. The exploitation  factor is the  ratio  of  stem volume utilized to the stem   volume that  actually  could  be utilized.   The latter represents  part  of  the stem  from  its lowest point  to its first  branch.  The part of stem  considered  utilized  is that part  which reached  the  log  pond   or  other  point   for  marketing.Exploitation  waste  in the areas of  the forest  companies  observed  ranges from  11.1%   to 21.2%.  This means  that  the exploitation  factor  ranges from 78.8%  to  88.9%.  The  average of  exploitation  waste  is 16.7%,  consisting  of parts  from stumps  2.9% and parts  from  stems  13.8%, and  hence  the  exploitation factor is 0.81.Exploitation  waste  can be kept  at a  minimum  by  better  planning  and  improving  skills  of  the  workers. The  exploitation  factors  among provincial  regions and logging companies  are not significantly.  Among  diameter  class, however,  they  differ highly significantly.  Therefore,  the exploitation factor reported here  should be used with great care.
PENDUGAAN BESARNYA LIMBAH INDUSTRI PERKAYUAN DI KALIMANTAN SELATAN DAN KEMUNGKINAN PEMANFAATANNYA SEBAGAI SUMBER ENERGI Roliadi, Han; Buharman, Buharman
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3765.139 KB) | DOI: 10.20886/jphh.1985.2.3.23-26

Abstract

The  volume  of  wood  waste from  sawmills and plywood mills in South  Kalimantan  was estimated  using the regression method. Data  were  collected   from sample mills  in the province.       Based on  the  regression analysis,  the estimated volume  of  sawmill waste generated by sawmills in South Kalimantan during the 1981 - 1982 period  was 684,353 m3 per year, and that of plywood mill was 221,818 m3 per year.       The total wood  waste could produced heat energy (fuel) as much as 12.29  x 1011k.cal/year, or 5.42 x 109 KWH per year  of  electric  energy.
SISTEM PENYARADAN PADA EKSPLOITASI HUTAN PINUS DI JAWA TENGAH Sutopo, S; Idris, Maman M
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5938.05 KB) | DOI: 10.20886/jphh.1985.2.3.1-9

Abstract

A paper  mill  is to  be erected  in Cilacap, Central Java in the near future. The raw material  must  come  from  the hilly pine  forests  in  the  Pekalongan  and Banyumas  area. The  mills daily intake ranges between 1,000-1,500 m3 of  relatively small  diameter  pine  logs. Therefore manual yarding  system  must  be improved  to increase its productivity. One way to do this is to yard  with a  wheeled  cariage.The purpose of this investigation  is to  determine the feasibility of  this yarding system in hilly pine forest terrain. The investigation reveals the following   :Yarding system by  Roda II is favourable  in  the  hilly pine  forest area in Central Java.This system increases  the  income  per  manday  approximately  by 31%  compared to the  traditional system (ngglebeg) for a  distance of  1,0 km,  and  18%  for a distance of  2.0 km.Yarding productivity by Roda II is approximately  1.58  m3 per day.
MENDUGA POTENSI PRODUKSI KAYU BULAT DARI HUTAN KALIMANTAN TIMUR MENGGUNAKAN METODE PENDUGAAN NISBAH DAN PENDUGAAN REGRESI Roliadi, Han; Buharman, Buharman
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3392.735 KB) | DOI: 10.20886/jphh.1985.2.3.15-18

Abstract

For predicting   the roundwood   potential   in the  forest  region  of  East Kalimantan, roughly  two  kinds  of data are required.  These includes sample  data and population   data.  Sample  data collected are the area or size of several selected  forest region  and  the volume  of  the  corresponding   roundwood   production,    while population   data  include  the  total  forest  area of  East  Kalimantan.The prediction methods  applied are ratio estimate  and regression estimate. Using ratio estimate, the volume  of roundwood  production   potential  predicted was 8 093 575  cu.m  (7 032  723  to 9  154  427  cu.m).   On the other  hand,  with  the application of  regression  estimate, the  uolume  of  roundwood  production   potential   was 8 505  603  cu.m.   (7 889  057  to 9 122 149  cu.m.).Examination of  the  residuals indicated that  assumption of  normality of  data was satisfied

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