Abstract:
This study aims are to determine the importance value index (IVI) and the similarity of
vegetation types in the Manggoapi and Brawijaya area. Data were obtained by continuous strip
sampling. A total of 40 plots or 1.74% Ha of the natural forest mountain area was used in this study.
The square size of each plot was 100 m x 20 m. Plant inventory activities were conducted in the
Manggoapi and Brawijaya areas. There were 126 species from 38 families with 1334 individuals.
Pometia coreacea was the highest IVI value of 21.98%. The highest and lowest similarity indexes
were 47.1% and 0.9%, respectively. A total of 137 species was found in 33 families with 738
individuals from Brawijaya area. Pometia coreacea had the highest IVI value of 28.05%, with the
highest similarity index of 50%. Moreover, the lowest species similarity was 3.9%. The similarity
index values between Manggoapi and Brawijaya areas were low. There was no combination of
observations with a similarity index value > 75%.
