Keanekaragaman Jenis Tumbuhan Invasif Di Taman Wisata Alam Nanggala III Kecamatan Wara Barat Kota Palopo Sulawesi Selatan

South Sulawesi is an area with high biodiversity and endemicity including plant diversity. The
diversity of plant species has now undergone many changes in structure and composition due to
human activities or naturally due to natural disasters that have resulted in the entry of invasive plants
that can threaten the existence of endemic plants in an area. This study aims to determine the
composition, importance index and diversity of invasive plant species in the Nanggala III Nature
Tourism Park, Wara Barat District, Palopo City, South Sulawesi. This research uses the method of
transect line which is placed by proposive sampling. The path is made as many as 3 paths intersecting
contour lines at different locations. Each line made 5 observation plots with a distance of each plot of
25 m along the transect line so that the total number of plots was 15 observation plots. The results of
this study indicate that the types of invasive plants in the Nanggala III Nature Park, Wara Barat
District, Palopo City, South Sulawesi, for seedlings and understorey levels consist of 11 families with
19 species. The sapling level consists of 4 families with 4 species. Pole level 3 families with 3 types.
As for the tree level, it consists of 2 families with 2 species. The invasive plant that had the highest
INP at the seedling or understorey level was Drymaria cordata Willd with an INP of 29,189, at the
sapling level was Calliandra calothyrsus with an INP of 119,088, at the pole and tree level was
Poronena canesceus with an INP at the pole level of 184,178 and at the tree level of 272,332. The
diversity of weeds (H') at the seedling or understorey level was 2.772 (medium), at the sapling level
was 1.311 (medium), at the pole level was 0.924 (low) and at the tree level was 0.308 (low).