| dc.description.abstract | Indonesia is a biodiversity-rich country with the second-largest tropical forest in the world. One
East Kalimantan Forest area in focus is the Hemaq Beniung Customary Forest. The Hemaq
Beniung Customary Forest is the first customary forest with its license granted in East
Kalimantan by the Ministry of Environment and Forestry of the Republic of Indonesia.
Information on vegetation diversity is essential to ensure sustainable management of this forest
area. This research provides such information through a survey with purposively chosen
samples representing Hemaq Beniung Customary Forest. The study reveals that the Importance
Value Index of vegetation in different habitus (i.e., seedling, sapling, pole, and tree) are low,
except for Elateriospermum tapos Blume, which has a moderate value for the vegetation at the
pole and tree habitus. The research also shows a high Richness Index (R), high Diversity
Index’(H'), an almost evenly distributed Evenness Index (e), and a low Dominance Index (C).
Syzygium borneensis (Miq.) Miq. and Knema elmerii Merr. have the highest Importance Value
Index for seedling and sapling habitus, respectively, while Elateriospermum tapos Blume has
the highest Species Significance Index for both pole and tree habitus. This study also found two
dipterocarp tree species categorized as Critically Endangered (CR), namely Shorea johorensis
Foxw. and Shorea lamellata Foxw. The presence of these CR species calls serious attention to
managing the Hemaq Beniung Customary Forest mainly for hydrological function and
conservation purposes while improving local communities' economy | en_US |
