STUDI AWAL KOMPOSISI DAN DINAMIKA VEGETASI POHON HUTAN GUNUNG POHEN CAGAR ALAM BATUKAHU BALI

A permanent 1 ha (100 m × 100 m) plot with 25 subplots (quadrates) and 5 level rows of altitudinal difference was established for long-term monitoring of plant diversity and dynamics in a tropical mountain forest of pohen mountain, batukahu nature reserve, bali, indonesia. enumeration of all tree species > 10 cm dbh (diameter at breast height) yielded a total of not less than 300 individuals that belonged to 24 species and 19 families with podocarpaceae was the most abundant family in the forest. plant density varied from 10-20 individuals/quadrates (20 m × 20 m). species composition and diversity varied between each quadrates in a row within the 1 ha plot. third row (intermediate altitude) exhibits the highest species diversity whereas the fifth row (the highest altitude) had the lowest species diversity. ordination analysis showed that species composition in the first, second and third rows are different with species composition in the fourth and fifth row. most of the pioneer tree species exhibited clumped distribution over the plot. this study provides baseline information for the management and restoration on the tropical mountain forests of pohen mountain, batukahu nature reserve post wildfire in 1994.