TREE SPECIES COMPOSITON AND DIVERSITY OF PROTECTED FORESTS IN CAM MOUNTAIN AREA IN AN GIANG PROVINCE

Abstract

This paper introduces the tree species and diversity in the Nui Cam protective forest in An Giang province. The research data was 20 standard plots with a size of 1000 m2 (50 × 20 m). The tree species and diversity were evaluated by the Important value index, S, d_Margalef, H’, J', 1-λ’, β-Whittaker index and Rényi diversity profile. The research results recorded 37 tree species of 21 families in the Magnoliophyta phylum, of which 5 - 6 species have an IVI > 5%. The dominant and co-dominant tree species distributed in natural and planted forests were Hopea odorata, Dipterocarpus alatus, Acacia auriculiformis and Mangifera indica. The Nui Cam protection forest has a low level of tree species diversity. The diversity indexes of natural forests were higher than those of planted forests. The distribution of tree species in natural forests was more uniform than in planted forests. The tree volume of natural forests was lower than that of planted forests.