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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 6 Documents
 1 
Search results for , issue "Vol 11, No 7 (1993): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
PENGAWETAN LIMA JENIS KAYU SECARA RENDAMAN DINGIN DENGAN DUA JENIS BAHAN PENGAWET CCB (Cold Soaking Treatment of Five Wood Species Using Two CCB Preservatives) Abdurrohim, Sasa
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8842.255 KB) | DOI: 10.20886/jphh.1993.11.7.256-266

Abstract

Wood Samples of five species measuring 3 cm x 3cm x 3cm (200 samples for each species) were treated with cold soaking treatment using Wolmanil CB and Diffusol CB preservatives for 1, 3, 5, 7, and 9 days at the concentrations of 2, 4, 6, and 8 percent,The test result of experiment, after taking both retention and penetration requirements into concideration for wood used under roof, and in the open air both without ground contact, showed that only two species, perupuk and keruing daun lebar, could be satisfactorily treated with Wolmanil CB under the experimental conditions, while other three species, damar kunyil, lanan and dungun, haven 't been meet the standar. Diffusol CB preservative showed a good result only on one species, i. e. perupuk.Keruing daun lebar for under roof and in the open air usage both without ground contact can be consecutively soaked for 7 days in Wolmanit CB solution of 6 and 8 percent, while perupuk, only for under roof without ground contact, for 9 days in 8 percent solution. Perupuk used under roof and in the open air without ground contact could be soaked for 7 days in Diffusol CB solution of 4 and 6 percent.
AN OPTIMAL HARVESTING MODEL TO EVALUATE THE INDONESIAN SELECTIVE CUTTING SYSTEM (TPI) (Model pemanenan yang optimal untuk mengevaluasi tebang pilih Indonesia (TPI)) Sianturi, Apul
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14722.708 KB) | DOI: 10.20886/jphh.1993.11.7.267-281

Abstract

Pendapatan dari hutan alam dalam duapuluh tahun terakhir sangat berpengaruh dalam peningkatan pendapatan masyarakat Indonesia. Hal ini akan terus berlangsung bila hutan alam dapat dikelola dengan berkesinambungan atau lestari. Salah satu elemen penting agar hutan alam dapat lestari dalam memberikan hasil adalah dengan meninggalkan cukup tegakan tinggal yang sehat pada setiap kali mengadakan tebang pilih.Tujuan dari study ini adalah untuk mengevaluasi sistim Tebang Pilih Indonesia (TPI), terutama dalam kaitannya dengan rotasi tebang, banyaknya pohon yang ditebang, dan banyaknya pohon sehat yang ditinggalkan. Dalam menentukan pilihan yang terbaik digunakan maksimalisasi nilai hutan yang didapat dengan menyusun model program linear (linear programing). Pertumbuhan (growth) dari hutan alam setelah diadakan penebangan diproyeksikan dengan model matrik transisi. Pohon dlkategorikan dalam dua grup yaitu diptrocarp dan non-diptrocarp, serta dalam 7 kelas diameter.Model program linear digunakan untuk mensimulasi 7 macam rotasi tebang, 3 tingkat suku bunga, 3 tingkat kerusakan tegakan, dan 6 macam sistim royalty,Hasil dari simulasi menunjukkan bahwa rotasi tebang yang optimal ditentukan oleh besarnya suku bunga serta tingkat kerusakan tegakan tinggal. Makin besar suku bunga yang digunakan makin pendek rotasi tebangan yang memberikan nilai hutan tertinggi, yang berarti bahwa penggunaan suku bunga yang tinggi memaksa untuk memanfaatkan sumber daya alam lebih cepat. Sebaliknya, bila kerusakan tegakan tinggal besar maka rotasi tebang harus lebih panjang,Dalam pada itu jumlah pohon tinggal yang sehat, serta jumlah pohon yang ditebang ditentukan oleh rotasi tebang serta tingkat kerusakan tegakan tinggal. Makin panjang rotasi tebang makin banyak jumlah pohon yang dapat ditebang dan ditinggalkan.Sebaliknya, makin besar kerusakan tegakan tinggal yang diperbolehkan, makin sedikit jumlah pohon yang dipungut dan yang ditinggalkan sebagai tegakan tinggal.
PENGARUH PAJAK TERHADAP BIAYA SEWA DAN PERMINTAAN KAPITAL Kasus : kayu gergajian tropis (THE IMPACT OF TAX ON RENTAL PRICE AND DEMAND FOR CAPITAL Case Study: Tropical Sawn Timber) Irawanti, Setiasih
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9877.371 KB) | DOI: 10.20886/jphh.1993.11.7.294-301

Abstract

The objective of this study is to estimate the impact of tax rate on rental price of capital and demand for capital in sawn timbel industry. Sawn timber industry analysed is limited to the sawmills belong to the forest conccession.The study used secondary data. Data analysed are time-series data of interest rate, depreciation, tax rate, and price index of investment, sawn timber production and price.The result of analysis shows that the increase of sawn timber export tax rate at the end of 1989 has caused a rental price of capital increase by approxincalely 4 times, and there was a decrease in the use of capital stock. Demand for equilibrium capital stock of sawn timber industry decreased by Rp 5.077 million (constant price 1983 ) and Rp 5.395 million (constant price 1983) in 1990 and 1991,respectively,or about 50%. it shows that there was a stagnation in the growth of sawn timber industry
ANALISIS KIMIA 8 JENIS KAYU DARI INDONESIA BAGIAN TIMUR (Chemical analysis of 8 wood species from East Indonesia) Hendra, Djeni
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (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.1993.11.7.282-285

Abstract

This paper deals with chemical analysis of eight wood species from East Indonesia i. e : Podocarpus imbricatus BL, Pouteria firma Baohani, Phylocladus hypopyllus Hoof.f, Agthis philipinensis Warb, Dacrydium beccarii Parl, Tristania maingayi Duthie, Castanopsis javanica A.DC and Shorea sp. The analysis comprised of the determinations of cellulose, lignin, pentosan, moisture, ash.silica and the solubility in cold water, hot water, sodium hydroxide (1 %), alcohol benzene (I :2).The result shows that cellulose content ranges from 47,58, to 59, 74 percent. The highest cellulose content was obtained from Agathis philippinensis Hooff and low cellulose content from Tristania maingayi Duthie. Lignin content ranges from 25,22 to 29, 84 percent where the highest was obtained from Shorea sp and the lowest from Pouteria firma Baohni and Phylocladus hypophyllus Hoof.f pentosan from 10,84 to 19,66 percent. Moisture content ranges from 10,09 to 13, 70 percent, ash content from 0,13 to 0, 78 percent, silica content from 0,12 to 0,40 percent. Solubility in cold water ranges from 2,11 to 12,97 percent.solubility in hot water from 3,09 to 14,76 percent, solubility in sodium hydroxide (1 %) from 10,65 to 27,68 percent and solubility in alcohol benzene (1:2) from 1,84 to 8,89 percent.
ANATOMI TUJUH JENIS KAYU DARI MALUKU UTARA (Anatomy of Seven Wood Species from North Maluku) Mandang, Y I
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (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.1993.11.7.286-293

Abstract

Gross and anatomical fentures  of seven wood species from North Maluku were observed and described for  identification purposes. Fibre dimension were also measured and evaluated for  their suitability for pulp and paper.The colour of wood ranges from   white to brown, mostly plain without figure.  Only one species has decorative figure  on its surface, that is Dracontomelon sp.  So it is recommended for fancy veneer of plywood or for furniture.The main anatomical features  of each wood species are as folows : a) vessels are exlusively solitary and aranged in radial groups in Calophyllum inophyllum; a few  vesels are radially multiple up to seven cells in Heritiera sp.;  (b scalariform perforation plates present mainly  in  Elmerillia  sp.and   rarely  in  Horsfieldia  sylvestris;  c) parenchymma  bands  are present   in  Calophyllum  inophyllum, Horsfieldia   sylvestris and Elmerillia sp.  : d) rays uniseriate   in Calophyllum inophyllum;    e).fiber septate in Dracontomelon sp.; f) axical intercelular  canals are present  in Hopea sp.  and Shorea koordersii;  g) oil cells in Elmerillia sp.  and taniniferous  tube in Horsfieldia sylvestris.Five species contain fibres  with medium quality  (Horsfieldia sylvestris,   Dracontomelon  sp.,   Heritiera sp.,  Shorea  koordersii  and Elmerillia sp.). other species contain fibres with poor quality.
SISTEM PENENTUAN BESARNYA PUNGUTAN DARI HUTAN ALAM (Royalty system of Natural Forest) Sianturi, Apul
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (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.1993.11.7.249-255

Abstract

The significant contributions of the natural forest to the well being of Indonesian Society in these decades can not be denied. This fact is a major incentive in managing natural forest in sustainable basis.One of the tools that can be used to sustain natural forest is eficient use of natural resources, which could be done by imposing proper royalty system. By collecting royalty base on the utilized logs, the loggers tend not to utilize margin timber as applied nowadays.Since the royalty is not part of the timber cost anymore if the payment system takes place after the timber sale, the royalty should be higher. than the payment before timber sale where royalty is a part of timber cost. The difference is in the margin of risk and profit. Far this purpose this study tries to build a model that can be used to determine the price of the royalty that should be paid by the loggers for each of the payment system.The result of the model shows that stumpage price (royalty) paid by the loggers in these days should be increased, especially if the payment based on utilized logs.In order to increase eficiency of timber utilization the payment of stumpage price should be based on volume which is taken from timber stand, at least based on volume of timber which is cut in the forest.

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