This study aims to analyze the organic matter content of peat soil in the Sriwijaya University Arboretum using the Loss On Ignition (LOI) method. The results showed that the organic matter content ranged from 25.22% to 75.77% and was categorized as very high, which is a characteristic of peat soil due to the accumulation of organic matter in water-saturated conditions. The peat thickness at theā¦