Abstract

Abstract Udayana urban forest in Mataram City, West Nusa Tenggara (NTB) province boasts the endemic Flora Malesiana. This research aims to describe the structure, composition and the authenticity of Flora Malesiana in this area. We used a census method (100% measurement) to identify the species and measured the diameter and height of all trees species with the diameter of more than 2 cm. The results showed that the 64 species belong to 27 families. The urban forest is dominated by Fabaceae family (27.39%) with its 18 species (28.13%) of plants being invasive. The species dominance index (C) is in the range of 0.00012-0.24, indicating that there is no concentration of the species in the plant community. The ecology index showed a low level for seedling, a moderate to high level for sapling and pole, and a high level for trees. The horizontal structure is almost in the form of an inverted J-curve, neither a dynamic nor a natural forest. Vertical stand structure shows that the canopy stratification in the Udayana urban forest is mostly in stratum C (91.33%).

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