Inventarisasi Tumbuhan Asing Invasif Yang Mengancam Ekosistem Taman Nasional Lore Lindu, Resort Sibalaya

Biological invasion has emerged as a critical factor contributing to the decline in biodiversity and ecosystem
degradation globally, with significant implications for ecology, economy, and society. This study aimed to
inventory invasive alien plant species and evaluate their potential threats using the Importance Value Index
(IVI). The research was conducted from August to November 2023, utilizing primary data obtained through
direct inventories in the Resort Sibalaya area. The study employed plot method sampling, with 1% of the total
research area sampled across 20 plots using purposive sampling. Tools and materials included Global
Positioning System (GPS), digital camera, measuring tape, compass, and field guides on invasive alien plants.
Data were collected through plot measurements and field plant identification, then analyzed using Microsoft
Excel to calculate the Importance Value Index. Results revealed that invasive alien plant species constituted a
significant portion of the inventoried plant population in Resort Sibalaya, with Vachellia nilotica and
Chromolaena odorata emerging as dominant species. IVI analysis indicated that these two plants significantly
influenced vegetation composition. Additionally, Leucaena leucocephala and Senna siamea from the Fabaceae
family also exhibited considerable values in their contribution to the plant community. These findings suggest
that invasive alien plants can disrupt natural habitats and threaten the existence of native plant species.