TREE SPECIES DIVERSITY IN THE LOWLAND FOREST OF THE CORE ZONE OF THE BUKIT DUABELAS NATIONAL PARK, JAMBI, INDONESIA
ABSTRACT: Tree species
diversity in the lowland forest of the core zone of the Bukit Duabelas National
Park, Jambi, Indonesia. Reinwardtia 15(1): 11 - 26. — An analysis of the
composition and structure of a one-hectare plot of forest on a lowland hill
slope in the eastern core zone of the Bukit Duabelas National Park, Jambi, was
conducted in October and November 2012. The objective of the study was to
obtain a descriptive account of the structure and tree species composition of a
lowland forest in the eastern core zone of the park. The plot was divided into
100 subplots of (10 m × 10 m) each and the seedling subplots (5 m × 5 m) were
nested in the sapling subplots. A total of 414 trees were recorded with DBH
(Diameter at Breast Height) ≥10 cm, representing 113 species and 38 families,
with the total BA (Basal Area) of 25.71 m2 and ShannonWiener diversity index of
4.29. Prunus arborea with IV (Importance Value) of 19.19 is the dominant
species and the other prevalent species were, Dracontomelon dao (IV =11.46) and
Hydnocarpus sp. (IV =11.38). A total of 44 species (38.9%) had each density of
1 tree/ha, which may be considered locally rare. Ficus fistulosa had the
highest density (24 trees/ha) and Prunus arborea had the highest BA (3.28 m2 =
12.8% of the total). Only 10 species had F (frequency) of 8-18%, of which
Hydnocarpus sp. had the highest (18%); the remaining species had F<8%, which
may be considered locally rare. Moraceae (IV= 34.05) was the dominant family.
The two richest families were Moraceae (11) and Clusiaceae (9). A total of 61
species were registered in the Sumatra checklist and one of them was endemic (Baccaurea
dulcis). A total of 13 species are listed in the IUCN Red List. The forest is a
developing community after disturbance in the past with poor regeneration.
Species with complete representation of trees, saplings and seedlings will
probably remain in the forest in the future.
Author: RAHMAH
Journal Code: jpbiologigg160003
