Apul Sianturi, Ishemat Soerianegara, Rahardjo S, Suparto Suparto, Syafii Manan


An investigation on the “exploitation  factor"  in the natural dipterocarp forest of Pulau Laut, South Kalimantan was carried out in 1981.  Sixty tree with a diameter at breat  height from 50  to 160  cm were selected at a sample from the stands in north and central Pulau Laut.                                                                                                                                  

From the investigation the following conclusions are in order  :

  1. The logging waste in the natural dipterocarp forest of Pulau Laut is 20 percent, with a standard error of 1,4 percent.
  2. Exploitation factor in the Pulau Laut natural dipterocarp forest ranges from 76,8 to 82,4 percent, averaging 80 percent.
  3. The volumes of the trees obtained by estimating the diameters at breast height and the heights of the clear boles are consistanly smaller than those obtained by measuring the dimateres and lengths of the clear boles after the trees were cut especially in hilly forests.
  4. Both diameter and clear bole length have significant effect on exploitation factor, their relationship being quadratic.
  5. Optimum diameter for highest yield is approximately 77 cm. This however, requires further research especially in relation with silviculture and felling cycle.




Abraham Jr, F.D. 1978. Practices and experience of Nasipit Lumber Company Inc, and affiliates in its natural and artificial regeneration on forest and plantations. Proceeding of Conference on Improved Utilization of Tropical Forest. Forest Products Laboratory, Forest Service. US Departement of Agricultures.

Berlage, Jr. H.P. 1949. Mean rainfall figures for 4339 rainfall stations in Indonesia, calculated from observations made during the period 1879-1941, Verhandelingen No. 37. Departement van Verkeer, Energie en Mijnwezwn Meteorologische en Geophysische Dienst. Koninklijk Magnetischen Meteorologisch Observatorium, Batavia.

Direktorat Bina Program Kehutanan 1976. Tegakan hutan Indonesia. Buku I Kehutanan Pengumuman No. 10 Dirjen Kehutanan, Bogor.

Dit. Bina Program. 1981. Laporan Direktorat Jenderal Kehutanan Tahun 1980/1981. Direktorat Jenderal Kehutanan Departemen Pertanian, Bogor.

Direktorat Jenderal Kehutanan, 1972. Pedoman Tebang Pilih Indonesia. Lampiran Surat Keputusan Direktorat Jenderal Kehutanan, No. 35/Kpts/DD/1/1972. Jakarta.

Haeruman Js, H.S. Sutarahardja, dan D. Mardiko, 1980. Studi Pengembangan Efisiensi Penggunaan Sumberdaya Alam. Buku II. Potensi dan karakteristik hutan hujan tropis Pulau laut Kalimantan Selatan. Fakultas IPB. Bogor.

Hinckley, A.D. 1976. Applied Ecology: A non technical approach. Macmillan Publishing Co. Inc. New York.

Reyes, M.R. 1959. Natural regenaration of the Philipines Dipterocarp forest. The Philip. Journal of Forestry 5 (1-4) : 39-59.

Sastrodimedjo, R.S. dan S.R. Simarmata. 1978. Limbah eksploitasi pada beberapa perusahaan hutan di Indonesia. Laporan No. 120. LPHH. Bogor.

Schmidt, P.H. and J.H. A. Ferguson. 1951. Rainfall type based on wet and dry periods ratio for Indonesia. With Westen New Guinea. Verhandelingen 42. Direktorat Meteorologi dan Geophisika, Jakarta.

Setyadarmojo, S. 1974. Pengetrapan TPI di hutan Kalimantan Selatan. Proceedings Seminar Reforestation dan Afforestatation di Indonesia. Fakultas Kehutanan. UGM. Yogyakarta.

Sinaga, M., S.R. Simarmata, dan M.M. Idris, 1981. Pengaruh latihan kerja terhadap volume limbah eksploitasi. Bagian I. BPHH, Bogor.

Snedecor, G.W. and W.G. Cochran. 1957. Statistical Methods. Sixth Edition. The Iowa State University Press. Ames.

Soerjono, R., H. Alrasjid, dan a. Suharlan. 1977. Penelaahan lokasi dan rencana kegiatan penelitian di Pulau Laut. Laporan Perjalanan Dalam Rangka Kerja Sama Penelitian Antar LPH dan PT INHUTANI II. LPH, Bogor.

Versteegh, F.J.D. 1972. Statistics in Forestry. Part II Inductive Statistic. ITC., Enshede.

DOI: https://doi.org/10.20886/jphh.1984.1.1.1-10


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