Analisis Vegetasi Tumbuhan Bawah di Kawasan Deleng Macik Taman Hutan Raya Bukit Barisan Kabupaten Karo Sumatera Utara

ANALISIS VEGETASI TUMBUHAN BAWAH DI KAWASAN DELENG
MACIK TAMAN HUTAN RAYA BUKIT BARISAN KABUPATEN KARO
SUMATERA UTARA

ABSTRAK

Analisis Vegetasi Tumbuhan Bawah Di Kawasan Deleng Macik Taman Hutan
Raya Bukit Barisan Kabupaten Karo Sumatera Utara telah dilaksanakan pada
bulan Mei sampai Juli 2016. Tujuan Penelitian ini untuk mengetahui
keanekaragaman tumbuhan bawah dan komposisi penyusunnya. Areal
pengamatan ditentukan secara purposive sampling metode kuadran dengan jumlah
100 plot berukuran 2 x 2 m susunan zig-zag terhadap transek. Hasil penelitian
menunjukkan bahwa pada lokasi penelitian terdapat 60 jenis tumbuhan bawah
yang terdiri dua divisi yaitu Pteridophyta sebanyak 17 jenis dalam 8 suku dan
Spermatophyta sebanyak 43 jenis yang termasuk kedalam 18 suku. Jenis
Homalomena griffithii, Argostemma uniflorum dan Cyrtandra oblongifolia adalah
memiliki Indeks Nilai Penting tertinggi secara berurutan yaitu 19,259 %, 11,996%
dan 9,674%. Suku Araceae, Rubiaceae dan Cyatheaceae adalah suku Indeks Nilai
Penting tertinggi yaitu 40,20%, 17,08% dan 12,11%. Indeks keanekaragaman
tumbuhan bawah yaitu 3,734% sedangkan Indeks keseragaman yaitu 0,912%.
Indeks kekayaan jenis yaitu 61 pada jenis Vrydagzynea sp. suku Orchidaceae.

Kata kunci : Analisis vegetasi, Deleng Macik, Taman Hutan Raya (TAHURA)
Bukit Barisan, Kabupaten Karo, Tumbuhan Bawah

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Universitas Sumatera Utara

VEGETATION ANALYSIS OF GROUND COVER IN DELENG MACIK
REGION,TAMAN HUTAN RAYA,DISTRICT OF KARO,
NORTH SUMATERA

ABSTRACT

Research entitled Vegetation Analysis Of Ground Cover In Deleng Macik Region,
Taman Hutan Raya, District Of Karo, North Sumatera had been conducted from
may to july 2016. The target of this research to know variety and composition of
ground cover. The studysite was chosen purposively with 100 plots of 2 x 2 m
underzig-zag placement along transect. Result of research at location there are of
total sixty ground cover species were found in this study which divided into two
divisions: Pteridophyte with 17 species from 8 families and Spermatophyte with

43 species from 18 families. Homalomena griffithii, Argostemma uniflorum and
Cyartandra oblongifolia had the highestrank of Importance Value Index (IVI)
which were 19,259 %, 11,996% and 9,674% respectively.Three families namely
Araceae, Rubiaceae and Cyatheaceae had the highest rank of IVI which were
40,20%, 17,08% dan 12,11% respectively. The highest diversity and equitability
index of ground cover is 3,734% and 0,912% respectively. The highest index of
species richness were from 61 species of Vrydagzynea sp. belonging to
Orchidaceae.

Keywords : Ground cover, Deleng Macik, Taman Hutan Raya, District of Karo,
Vegetation Analysis

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Universitas Sumatera Utara