v
STUDI EFEK TEPI PERKEBUNAN RAKYAT TERHADAP STRUKTUR DAN KOMPOSISI VEGETASI KAWASAN HUTAN GUNUNG SIBUATAN
KABUPATEN KARO SUMATERA UTARA
ABSTRAK
Penelitian studi efek tepi perkebunan rakyat terhadap struktur dan komposisi vegetasi kawasan hutan Gunung Sibuatan Kabupaten Karo Sumatera Utara telah dilaksanakan pada bulan Desember 2014 sampai dengan Mei tahun 2015. Lokasi penelitian ditentukan dengan metode purposive sampling dengan membentuk plot berukuran 60×200 meter yang dibagi menjadi 10 area pengamatan. Analisis vegetasi dilakukan dengan metode kuadrat, untuk tingkat pohon plot berukuran 20×20 meter, tiang 10×10 meter, pancang 5×5 meter, semai 2×2 meter, dan tumbuhan bawah 1×1 meter. Hasil penelitian menunjukkan komposisi vegetasi terdiri dari 38 jenis pohon, 56 jenis tiang, 44 jenis pancang, 24 jenis semai, dan 19 jenis tumbuhan bawah. Dinamika vegetasi memperlihatkan adanya pengaruh efek tepi sejauh 140 meter dari tepi hutan. Vegetasi pohon, tiang, pancang dan semai didominasi oleh famili Fagaceae sedangkan tumbuhan bawah didominasi oleh famili Selaginellaceae.
Kata kunci: Efek tepi, purposive sampling, Struktur dan Komposisi.
vi
STUDY OF EDGE EFFECT OF RESIDENT PLANTATION ON THE STRUCTURE AND COMPOSITION OF VEGETATION IN THE FOREST
OF MOUNT SIBUATAN KARO DISTRICT, NORTH SUMATRA
ABSTRACT
The study of edge effect of resident plantation on the structure and composition of vegetation in the forest of Mount Sibuatan Karo district, North Sumatra has been conducted. Research site was determine using purposive sampling method with the area measuring of 60x200 meter, subdivided into 10 observation areas. Vegetation analysis was carried out by applying a square method or plots with certain sizes which were categorized into tree (20x20 meter) pole (10x10 meter), sapling (5x5 meter), seedling (2x2 meter), and ground cover (1x1 meter). The result of this study were consisting of 38 species of tree, 56 species of pole, 44 species of sapling , 24 species of seedling, and 19 species of ground cover. The dynamics of vegetation showed that edge effect influenced as far as 140 meter from the edge. Vegetation of tree, pole, sapling and seedling was dominated by Fagaceae while ground cover was dominated by Selaginellaceae.
Keywords: Edge Effect, Purposive Sampling, Structure and Composition.
