Analisa potensi jenis rotan kurang dikenal di hutan Berau, Kalimantan Timur

The potency analysis of lesser-known rattan species was concentrated at Labanan forest district, Berau, East Kalimantan. Inventory were carried out in virgin forest by adopting transect approach. Three study sites namely Siduung I, Siduung II, and Km-35. Based on the rattan distribution in the area, research plots were designed and arranged using systematic sampling. The method used was belt transects (quadrate) by combining single plot and line transects. Transect were laid in 1 km length, and plots size of 10 m width and 20 m length. First transect was assigned randomly (abundance of rattan plants), while second and next transect were arranged systematically with 100 m distance between the line. These transect were made in three forest areas, consisting two (2) transects per area. Each transect consists of 50 plots and made up a total of 300 plots within all study area. The result reveals that, there are five generas consisting of 33 species of rattan naturally distributed in Labanan, Berau, East Kalimantan (PT Inhutani I), i.e: Calamus (16 species), Ceratolobus (3 species), Daemonorops (4 species), Korthalsia (8 species), and Plectocomiopsis (2 species). Twenty five (25) species out of 33 are recognized as lesser-known species. In terms of species richness and density, Siduung I is the first rank, follows by Km-35 and Siduung II. During the study, Daemonorops longipes Mart. species always found in each of the research plots, so it can be suggested that this species has the widest distribution among rattan species., Plectocomiopsis geminiflora (Griff.) Becc., Daemonorops longipes Mart., Calamus cf. muricatus Becc., Calamus marginatus Blume, and Korthalsia jala J.Dranf. have been relatively dominant of lesser known rattan species occurring at three research site. Rattans are relatively abundant in their number of species at the areas Siduung II and Km-35. Based on the Important Value Index and weight of lesser-known rattan species which can be categorized as a potential commodity for utilization is Daemonorops longipes, Plectocomiopsis geminiflora, Calamus marginatus, Korthalsia rigida, and Calamus cf.muricatus.

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: .,

Deskripsi Fisik

Buletin Penelitian Hutan : No.638

Bahasa

Indonesia

ISBN/ISSN

1410-0649

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Perpustakaan R.I. Ardi Koesoema

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