Inventarisasi Anggrek Terestial di Hutan Pendidikan Bagian Timur Kawasan Taman Hutan Raya Bukit Barisan Tongkoh Kabupaten Karo Sumatera Utara

Abstract

ULINAR AMANTHA Pasaribu. Inventory of terrestrial orchids in the Eastern Region Forest Education Forest Park Bukit Barisan Tongkoh Karo district of North Sumatra. Supervised by: PINDI PATANA S.Hut., M.Sc. and Dr. Ir. YUNASFI M.Si. This study aims to invent the species of orchids found in the eastern part of the Forest Education TAHURA Barisan Tongkoh Karo. Determination of the location of the observations were made by using purposive sampling method. Vegetation inventory plots used random sampling method, with education 40 plots measuring 5x5 m, sampling intensity of 0.001 % of the forest area and the distance between plots adjusted according to the presence of orchids. Orchids were found in the plots are labeled A1, A2 and so on and documented, further the sample were identified using identification books orchids. Important value index is calculated from the sum of the relative density and relative frequency. The data collected in this study are: The types of orchids, elevation, position, soil pH, temperature and humidity. Then the identification and analysis of vegetation types. The results of this study indicate that orchids were found in the Bukit Barisan Forest Education Tahura Tongkoh Karo 13 species of terrestrial orchid genus which consists of 8. The highest IVI value was 35.613 % on the type of Calanthe sp. and the lowest of 4.772 % on the type of Bulbophyllum sp. Diversity index H ' of 2.0. The most dominant genus of orchids is the type of the genus Calanthe Calanthe sp. with total 69 individuals and the type of the genus Phaius Phaius sp. 64 individuals.