Keanekaragaman Jenis Pohon di Arboretum Universitas Sumatera Utara

Abstract

The University of Sumatera Utara (USU) arboretum is a conservation area as well as a green space which plays an important role in supporting ex-situ conservation efforts for various species of flora, especially trees. Tree identity in the USU arboretum is very important information as a reference in determining appropriate conservation efforts in the future. This research were conducted to identify trees spesies in arboretum USU, to analyze the diversity, and to analyze potential use and conservation status of trees species in USU arboretum .This research was conducted by census, through analyzing the tree that grow in arboretum area. The vegetation analysis method was employed for this purpose. Descriptive analysis was also carried out to determine the benefits and conservation status of all species at the study site. The results showed that there were 77 tree species found in USU arboretum. Spondias pinnata was the species with the highest number of individuals, namely 4,878 (33.14%) and the species with the least number of individuals was Tamarindus indica with 2 individuals (0.01%). Based on Important Value Index (IVI), Spondias pinnata was the species with the highest IVI at the seedling and sapling stage, with the value of 44.15% and 54.94%. Tectona grandis and Alstonia scholaris were species with the highest IVI at the pole and tree stage, with the value 61.56% and 43.56%. The highest diversity index found in pole stage (3.302) and the lowest was at the sapling stage (2.048). Based on tree utilization, 28 tree species (36.36%) were wood-producing species, 26 species (33.77%) as medicinal producers, 6 species (7.79%) as food ingredients, 6 species (7.79%) as industrial materials, 4 species (5.19%) as ornamental plants and 1 species (1.29%) as natural pesticides. Based on conservation status 72 tree species (93.50%) have least concern (LC) status, 2 species (2.59%) have endangered (EN) status, 2 species (2.59%) have vulnerable (VU) status and 1 species (1.29%) has have data deficient (DD) status.