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Articles 5 Documents
Search results for , issue "Vol 14, No 1 (1996): Buletin Penelitian Hasil Hutan" : 5 Documents clear
LIMBAH KAYU AKIBAT PEMBUATAN JALAN HUTAN DAN TEBANG BAYANG PADA ENAM HAK PENGUSAHAAN HUTAN DI KALIMANTAN TIMUR (Wood waste caused by forest road construction and shadow cutting at six logging companies in East Kalimantan) Idris, Maman Mansyur; Suhartana, Sona
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 | Full PDF (4144.684 KB) | DOI: 10.20886/jphh.1996.14.1.7 – 15

Abstract

This paper  present   the  results  of  the  study  on  logging  waste  caused  by forest   road construction and  shadow  cutting.  The  study  carried  out at  six  logging  companies  in East Kalimantan in 1990.The aim  of  the  study  are  :    (1)  to  determine  the  wood  waste  caused  by forest  road construction  and shadow cutting,  (2) to find the factors  influencing the wood waste and (3) to find the way of reducing the wood waste.The results  of this study  shows  that the average wood waste from trees felled caused by forest road construction  and shadow cutting is 1.16  m3/ha for  commercial wood species and 2. 76 m3/ha  for non-commercial  wood species.Keywords :  wood waste, forest road,  shadow cutting
SIFAT FISIKO-KIMIA MINYAK KERUING YANG DIHASILKAN DARI METODE PENYULINGAN UAP (The physico-chemical properties of Keruing oils obtained by steam distillation technique) Wiyono, Bambang
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.1996.14.1.24 – 30

Abstract

Keruing  oils can be obtained  through separating  the oil from keruing gum  by distillation technique,   or distilling  keruing  wood.  In accordance with the lattest method,   the objective of this research  is to study the  physico-chemical  properties  of keruing oils which were obtained by steam distillation  of   a mixture of several keruing wood species.  This wood was randomly taken three  times from  the wastes of wood processing  industry in East Kalimantan.   Each wood wastes taken was steam distilled  and  the yielded  oils were   analysed  their physico-chemical properties.   The difference between means value  of the properties of the oils  was tested by using LSD according td SAS  procedure.Results   revealed that  wood wastes gave  a highly  significant  effect on refractive  index, optical  rotation,  acid and  ester number  of keruing  oils.  It also gave  a significant  effect  on saponification   number.   Further  analysis   showed  that  the  keruing  oil  with  clear  colour compared  to  both  keruing  oil  with  clear yellow and pale  yellow  colour  was  a  significant difference in acid   and ester number.  Moreover,  the keruing oil with pale yellow  colour had ll significant  difference  in saponification   number  compared  the others.  Among  these  oils,  the refractive index and optical rotation properties  were a significant  difference one to the others. Based these results,  if  the keruing wood wastes will be used as raw materials for  keruing oil production,  it is better that the keruing wood containing much oil or gum should  be separated from the others before further processing.Keywords:  Keruing  oil, Dipterocarpus  spp, Steam distillation, oil properties
ANALISIS KIMIA BEBERAPA JENIS KAYU DARI INDONESIA BAGIAN TIMUR (Chemical analysis of several wood species from East Indonesia) Pari, Gustan
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.1996.14.1.1- 6

Abstract

This paper  reported  the  result  of  chemical  analysis  of  nine  wood  species  from  East Indonesia.  The analysis comprise of the determination  of  holocellulose,  cellulose,  lignin,  pentosan,  ash  content,  silica  content  and the solubility  in cold water,  hot water,  one percent  of  sodium  hydroxide and alcohol  benzene extractives.  These analysis  were conducted to determine their basic characteristics and ultimate uses of the wood. The result showed that holocellulose  content ranges from  66,91 - 75,29 %, cellulose from  43,50- 54,72 %, lignin from  24,04 - 33,09  %, pentosanfrom   14,34 - 18,95  %, ash content from  0,38  - 2,13  %, silica content from  0,12 -1,91  %, The solubility in cold water rangesfrom 2, 71  -  8,42  %, hot water from  2,87 - 8,92  %,  in NaOH 1  % from  12,34  - 26,65   %  and in alcohol benzena (1:2) from  2,42-11,86  %. Based on chemical analysis,  especially  the  cellulose content the 9 wood species from  East Indonesian are suitable as raw material for pulp and paper industry.Keywords:   IBT, Chemical Component.
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) Endom, Wesman; Idris, Maman Mansyur
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

Abstract

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.
ANATOMI DELAPAN JENIS KAYU KURANG DIKENAL DARI SUKU FLACOURTIACEAE SAMPAI JUGLANDACEAE (Wood anatomy of eight lesser known wood species of Flacouriiaceae to Juglandaceae) Mandang, Y I
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.1996.14.1.31- 45

Abstract

Gross and anatomical features of eight lesser known wood species  belongs to 5 families from Flacourtiaceae to Juglandaceae were observed and described for  identification purposes. Fiber dimension were also measured for  evaluation of their suitability for pulp.  Septate fibers, vessels in radial multiples. some ray longitudinallyfused are the main characters of Homalium and   Trichadenia    (Flacourtiaceae).    Bucklandia    and    Distylium    (Hamamelidaceae)   are characterized by small and polygonal vessel,  scalariform perforation plate, and disjunctive end wall at upright ray cells. Urandra and Platea (Icacinaceae) are characterized by two type of ray  width, fibers  with  distinctly bordered pit,  scalariform  perforation  plate.and  yellowish  wood colour.  Four  species  contain    fibers   with  medium  quality for  pulp   (Engelhardtia  spicata, Bucklandia triscuspis,  Platea  latifolia,   and  Trichadenia  philippinensis).  The rest four  species contain fibers  with poor  quality.  Trichadenia  philippinensis  is the only one among eight wood species examined which has decorative  appearance  :  moderatelyfine  texture,  bright yellow  in colour and considerable high density. It is thereforepossible  to be used as "ramin" substitute.Key words:   wood anatomy,  identification, Flacourticeae, Juglandaceae.

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