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Abstract
ABSTRACT
Bim boi hoa vang (Merremia boisiana) becomes more abundant in A Luoi district, Thua Thien Hue province. This study identified the distribution of the species impacts on the habitats, and the dispersal paths. Through transect and standard plot surveys, we identified 12 species, of which 5 invasive alien species and 7 highly invasive plant species. Among these 12 species, Bim boi hoa vang has the highest impact on the habitat. They appears in most of the habitats, except for the pristine and rich forests. Distributing in clusters, they are mainly mature trees with an average root diameter of 4 - 5cm, main body length of about 20 - 30 m. They are creating a double repercussion that benefits themselves and harmful to the other species within the habitat. They significantly reduced the number of prospective trees. They can also create other adverse conditions such as doubling the fallen branches and leaves; increasing 3 times the difference in light amplitude; increasing the ratio of secondary organisms and decomposing up to 3 - 4 times higher than in uncovered places. This species can be dispersed by wind, water, animals, human activity and self-dispersing, most feasible by the wind.