Plant Species in Immature Oil Palm Plantation Areas in Kolaka Regency, Indonesia
Plant Species in Immature Oil Palm Plantation Areas in Kolaka Regency, Indonesia
Damhuri Damhuri1*, La Ode Muh. Munadi2, Lili Darlian1 and Sitti Wirdhana Ahmad3
ABSTRACT
This study analyses the botanical composition, species diversity, dominance, and evenness of plant species in immature oil palm plantation areas in Kolaka Regency. The study area is 7.698,46 hectares, with 2.732,91 hectares of immature oil palm plants. The study was conducted for eight months, from January to August 2024, in two main sub-districts, namely Tanggetada and Watubangga. Data were collected through field observation methods with exploration and sampling using the transect method to identify plant community types. Sampling was carried out in six villages such as Kastura Village, Polenga Village, Kukutio Village (Watubangga District), as well as Pundaipa Village, Oneeha Village, and Tinggo Village (Tanggetada District), with a total of 50 sample points per village. Vegetation analysis using the Summed Dominance Ratio (SDR) calculation, which includes Absolute Density (AD), Absolute Frequency (AF), Relative Density (RD), Relative Frequency (RF), Importance Value (IV), Species Diversity Index (H’), Dominance Index (C), and Evenness Index (E). The findings show that the dominant species vary in each village, including Panicum maximum (Jacq.) (Polenga, SDR: 3.4592%), Mikania micrantha Kunt. (Kastura, SDR: 3.6073%), Phymatodes sp. (Kukutio, SDR: 3.6183%), Nephrolepis bisserrata (Pundaipa, SDR: 3.6072%), Chromolaena odorata (L.) King (Tinggo, SDR: 3.9861%), and Asystasia coromandeliana Ness. (Village, SDR: 3.5335%). The species diversity value (1<H’<3) at all locations is moderate, indicating a stable plant diversity.
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