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INDONESIA
Jurnal Penelitian Hasil Hutan
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 02164329     EISSN : 24428957     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 1,559 Documents
 137   138   139   140   141 
PENGARUH PERENDAMAN MENGGUNAKAN LARUTAN CAMPURAN TEMBAGA SULFAT DAN NIKEL NITRAT TERHADAP WARNA PERMUKAAN BAMBU Gigantochloa apus Kurz. Barly Barly; Susilawati Susilawati
Jurnal Penelitian Hasil Hutan Vol 30, No 2 (2012): 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.2012.30.2.87-93

Abstract

Warna hijau pada kulit bambu yang baru ditebang, cepat berubah menjadi kuning gading jikadikeringkan, atau menjadi kelabu-gelap apabila lama direndam dalam air atau disimpan di tempatlembab. Upaya pencegahan perubahan warna hijau pada kulit bambu perlu dilakukan. Penelitian inibertujuan untuk melihat efektivitas larutan campuran tembaga sulfat dan nikel nitrat dalammempertahankan warna hijau pada permukaan kulit bambuGigantochloa apusGigantochloa apus Kurtz. Bambu direndam dalam larutan campuran garam tembaga sulfat dan nikel nitrat yang dibuat dalam berbagai perbandingan berat dan konsentrasi larutan (%b/b) yang berbeda. Interpretasi warna pada permukaan kulit bambu menggunakan sistem tiga dimensi CIE (L*, a*, b*) dilakukan dengan bantuan alat Color Difference Meter CDX-105. Hasil pengujian menunjukkan intensitas warna hijau pada kulit di batang bagian atas dan bagian tengah lebih tinggi dari batang di bagian bawah. Selanjutnya, penggunaan larutan campuran dengan proporsi 4,0 bagian tembaga sulfat dan 3,5 bagian nikel nitrat pada konsentrasi 7,5% menghasilkan intensitas warna hijau tertinggi atau terbaik dalam mempertahankan warna hijau ditunjukkan dengan nilai L*, a* dan b* rata-rata berturut-turut 61,8, -14,3, dan 18,3
SIFAT PAPAN WOL KAYU DARI 17 JENIS KAYU IRIAN JAYA I M Sulastiningsih; Rozak Memed; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): 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.1987.4.4.48-52

Abstract

The result of laboratory tests on the properties of wood-woo/boards made from 17 wood species obtained from lrian Jaya are reported in this paper. The test comprised board density, moisture content, thickness reduction due to compression and bending strength.The study reveals that the average yield of wood-wool is 312 kg per cubic meter of log input.  The physical and mechanical properties of wood-wool boards from  five  wood species mineralized with CaCl2 solution or  Ca(OH)2 suspension are in compliance with the DIN 1101 standard. 
ANTROPOMETRIK PENEBANG JATI DI BKPH BANDUNGSARI KPH PURWODADI PERUM PERHUTANI UNIT JAWATENGAH Sona Suhartana; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 7, No 1 (1990): 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.1990.7.1.28 - 33

Abstract

Anthropometric  data  of  the  workers  are essential  in  the practice of  ergonomics,  especially  for  the  design of  work places,  machines  and equipment in order to attain work comfort and increased  work productivity.Anthropometric measurements were carried out to 18 teak loggers aging between  20-35 years. The measurements included: body,  shoulder, elbow  and hip  height;  shoulder  and hip  width; length  of arm and. hand, length  of upper arm, lower arm and  hand;upper   reach  and  arm  span (measurements in  standing   position).   In  sitting  position, the  body measurements comprised  sitting,  elbow,  hip and knee  height;  length  of upper and lower log.The  result shoures  that  elbow  height  of  teak  logger has high  variability  and decreo,se their working comfort and productivity.  Lenght of arm and hand  which  are longer than axe handle  on the other hand speed  up working  fatique  and infficient work.
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

Abstract

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.
ANALISIS EKONOMI DAN KELEMBAGAAN HUTAN RAKYAT SISTEM AGROFORESTRI KOMBINASI JENIS POHON SERBAGUNA DAN KAKAO : Suatu studi kasus di propinsi Sulawesi Tenggara R Marsuki Iswandi; Affendi Anwar; B D Nasendi; Hermanto Siregar
Jurnal Penelitian Hasil Hutan Vol 14, No 4 (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.1996.14.4.153-168

Abstract

The agroforestry system  is often  undertaken by famers  in Indonesia specifically for  the development  of multi  purpose  tree species in dry land.   Farmers use the agroforeftry  system  because of ils efficient usage of land and labor and to minimize the risk of crop failure.The agroforestry system  in Southeast  Sulawesi  consists  of planting  cocoa  among multi purpose  tree species  (MPTS), like fruit  trees   (such as langsat or durian) and coconut  trees. The average income earned by  farmers  who apply the combination of langsat, coconut and cocoa was Rp  2.378.825,-/ha/year.  The average income earned by farmers  who apply the combination of  durian, coconut  and  cocoa  was  Rp 2.378.827,-/ha/year.  Financially,  the agroforestry  system  with MPTS  in  Southeast  Sulawesi  is  worth undertaking  because  it  is profitable.From the farmers  point  of view,  the marketing of langsat, durian,  coconut and cocoa is not competitive,  since  farmers  are on the weak side in the price information process.   The results of the analysis of price transmision elasticity,  the index of market integration in the short-run and  in  the  long-run,  show  that  the  market  for  the  above  mentioned   commodities  is  not integrated.   The reason for  this is because of  the inefficiency and deficiency in the availability of market information.The institutional system in the marketing process of the commodities offered by the farmersis  relatively  informal.     In  the  marketing  process   of  langsat,  durian  and  coconut,   the relationship between farmers  and traders can be described as clientelism (patron-client).    On the other hand,  in the marketing of cocoa,  the  farmers  have a fixed  relationship with their market  institutions  like papalele,   whereby  the farmers   receive  working capital from   local traders to harvest and to produce and sale the cocoa to the local market.Key words  :  private  forest,  agroforestry,   MPTS,  income,   marketing,   institution,   Southeast Sulawesi.
SIFAT PEMESINAN EMPAT JENIS KAYU KURANG DIKENAL DAN HUBUNGANNYA DENGAN BERAT JENIS SERTA UKURAN PORI Achmad Supriadi; Osly Rachman
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.2002.20.1.70-85

Abstract

The machining properties of four lesser known wood species from natural forest in Kalimantan has been investigated. The wood species were gading (Koilodepes sp.), penjalin (Drypetes sp.), arang (Diospyros macrophylla B.) and sibau (Blumeodendron kurzii I.I Sm) with their specific gravities, i.e. 0.83, 0.81, 0.55, and 0.56, respectively. Further, assessment was conducted on the relation between wood characteristics (i.e. specificgravity and vessel diameters) and the possible occurrence of defect due to machining. The machining work included planning, shaping, boring, turning and sanding.The results revealed that machining properties were significantly affected by wood specific and vessel diameter. The higher the specific gravity and the smaller the pore diameter, the less defect that resulted from wood machining. As such, the machining quality of gading and penjalin woods was regarded as very good. Meanwhile, the machining qualities of arang and sibau woods as good to very good. Therefore, to infer, wood with higher specific gravity tends to improve machining properties. Likewise, wood with larger vessel diameter will downgrade the machining properties.
PENGARUH KADAR AIR DAN SUHU TANAH TERHADAP PENYEBARAN RAYAP TANAH Agus Ismanto; Ginuk Sumarni
Jurnal Penelitian Hasil Hutan Vol 10, No 3 (1992): 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.1992.10.3.102-104

Abstract

The  result  of  a  study  on  the  effect  of soil moisture  content and  temperature  on subterranean  termite  distribution is presented   in this paper.The study  shows   that   soil  moisture   content   and   temperature  has significant   effect   on  subterranean  termite distribution. Four  subterronean   termites   namely  Microtermes  incertoides,  M.  insperatus,  Macrotermes  gilvus and Coptotermes  curvignathus  were  identified   at  the  first  location   (soil  moisture  content  = 21. 71 %,  soil  temperature   = 25. 7oc).   Whereas  at  the  second   location   (soil  moisture content =  8.36%,   soil  temperature  =  27.5°C)   two  species  only were  identified   namely  M. incertoides and  M.  insperatus.
OPTIMASI LUASAN PETAK TEBANG DI HUTAN TANAMAN RAWA GAMBUT BERDASARKAN PRODUKTIVITAS DAN BIAYA Sona Suhartana; Yuniawati Yuniawati; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 31, No 3 (2013): 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.2013.31.3.200-212

Abstract

PERBAIKAN TEKNIK PELENGKUNGAN ROTAN MELALUI PERENDAMAN DENGAN LARUTAN DIMETIL SULFOKSIDA Osly Rachman; Suhadi Hardjo; Meri Suwirman
Jurnal Penelitian Hasil Hutan Vol 15, No 4 (1997): 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.1997.15.4.299-311

Abstract

Kayu dapat dilunakkan dengan berbagai macam bahan kimia, satu di antaranya adalah larutan dimetil sulfoksida (DMSO). Oleh karena rotan mengandung struktur kimia yang sama dengan kayu maka akan diselidiki kemungkinan pemanfaatan bahan ini untuk pelengkungan rotan. Tujuan penelitian ini adalah untuk mempelajari pengaruh larutan DMSO pada pelunakan agar diperoleh teknik pelengkungan rotan yang lebih baik. Untuk maksud tersebut, 3 jenis rotan direndam dalam 5 tingkat konsentrasi DMSO lalu diamati sifat pelengkungannya.Pengamatan terhadap kerapatan dan penyebaran ikatan pembuluh yang paling tinggi pada rotan batang menunjukkan bahwa rotan ini perlu direndam dalam larutan 15 persen DMSO agar dapat dilengkungkan dengan mudah tanpa menimbulkan cacat. Sebaliknya, rotan minong memerlukan perendaman pada larutan 5 persen DMSO. Kerusakan pada serat rotan sebagai akibat pelengkungan tanpa perendaman dalam DMSO sangat jelas terlihat pada rotan minong dan batang.Peningkatan konsentrasi larutan cenderung meningkatkan kemudahan dalam pelengkungan, mengurangi kerusakan fists dan tidak mempengaruhi kilap rotan. Akan tetapi, kenaikan konsentrasi cenderung meningkatkan mulur dan pengerutan volume serta menurunkan MOE dan rasio elesto-plastisitas rotan.
ANALISIS PERMINTAAN KAYU LAPIS DI JAWA Satria Astana; Buharman Buharman
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): 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.1986.3.2.14-18

Abstract

One of  the main  important things for  the planning  of production and marketing  development is the demand informations. This research was conducted to analyse the aggregate demand  of plywood  in the districts of Java and its determining  factors.  The result of this research revealed that the aggregate demand  of plywood  in the districts of Java ranged from 679. 731 m3 to 1741.841  m3. The number of people  and the gross domestic regional income in the districts determine  the aggregate demand  of plywood significantly.  The elasticity  of the number of people  is 0.12  and the gross domestic  regional income  is 0.16. In addition,  this research found  that the distribution  of its consumption  consisted  of 60. 02% of the households,  25.22%  of the building contractors,  10.97%  of the furniture  craft industries and  3. 79% of the car body craft industries. 

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