Abstract:
The Ghimbo Potai Customary Forbidden Forest is a tropical forest with high biodiversity, and is
protected by local customary regulations that make the forest habitat sustainable. This study
aimed to determine the abiotic effect on the sustainability of the kulim vegetation in the Ghimbo
Potai Prohibition Forest. The method used was purposive sampling by checking the existence of
kulim trees, then a circle plot was made according to the canopy area and vegetation analysis
was carried out. Air humidity in the five plots was in the range of 77-80%, while the air
temperature ranges from 27.2 to 31.1℃. The intensity of sunlight under the canopy of the kulim
trees ranges from 2,630 lux to 48,100 lux. Kulim tree canopy cover in this study ranged from
61.03% to 73.63%. Soil pH obtained in this study for the five kulim tree plots ranged from 5.2 to
6.1. The abiotic data obtained shows that the Kulim trees in the Ghimbo Potai Customary
Prohibition Forest are classified as normal because of the abiotic factors that support the growth
and existence of this species.
