A Survey of Ethnobotanical Plants used by the Dusun People inside 20 m x 20m plots in Trus Madi Mountain Forest Reserve, Tambunan District, Sabah, Malaysia.

The objective of this research was to investigate the diversity of ethnobotanical plants used by the Dusun peoplein Kaingaran village in three types of vegetations in Trus Madi mountain Forest Reserve, Tambunan District, Sabah, Malaysia. The three types vegetations surveyed were namely Lowland Mixed Dipterocarps Forest, Lower Montane Forest and Upper Montane Forest. Three replicates of 20 m X 20 m plots were established at each types of vegetation. A total of 230 ethnobotanical plants were enumerated, which comprised 86 species in 46 families. Shannon-Weiner Diversity Index (3.403) and Simpson Diversity Index (0.9724) indicated that the Lowland Mixed Dipterocarps Forest has more species richness and was more diversified compared to other types of vegetation. The ethnobotanical plants can be classified to eight usage namely, medicinal, constructions, edible fruit, edible greens, animal fodder, handicraft, kitchen's utensils and firewood.  This study had added 37 more species as new records of ethnobotanical plants found in Trus Madi mountain Forest Reserve.

Keywords: Plot survey, ethnobotanical plants, Dusun people, Kaingaran village, Tambunan, Sabah, Malaysia.