Cat Tien National Park is located between two bio-geographic areas Truong Son highland and South Delta, so it is the home of rich and diverse flora classes. It is characterized by the types of broad-leaved evergreen tropical rain forest with woody trees, predominantly from the Dipterocarpaceae and Fabaceae families, which are the typical forest vegetation component in Southeast Vietnam.
Flora in Cat Tien National Park is divided into five main forest types:
– Broad-leaf evergreen forest: mainly composed of Dipterocarpaceae, Fabaceae such as Dipterocarpus alatus, Dipterocarpus intricatus, Dalbergia bariensis, Dalbergia mammosa, Afzelia xylocarpa, and Pterocarpus macrocarpus.
– Broad-leaf forests/semi-evergreen: composed of species which are deciduous during the dry season such as, Lagerstoemia calyculata, Tetrameles nudiflora, and Anogeissus acuminata.
– Mixed forests of wood and bamboo: this is a revegetated forest of evergreen and semi- evergreen trees due to fire, toxic chemicals, canopy opened and bamboo introduced forest. The common species are Mesua sp., Lagerstoemia calyculata and the two main bamboo species are Bambusa procera and Gigantochloa sp.
– Pure bamboo forest: this is also secondary forest, which was caused by number of factors including, deforestation for cultivation, abandonment, and species invasion from bamboo.
– Wetland vegetation: the dominant vegetation are comprised of water-resistant species such as Colona sp., Barringtonia racemosa, and mixed with Erianthus arundinaceus and Saccharum spontaneum.