RIMA PUTRI KERTAMUDA. Decomposition Rate and Litter Biomass Production of Understory Plants in Oil Palm Plantation under NVI (Natural Vegetation Interrow) and ISP (Interrow Seedling Planting) Systems (Supervised by NUNI GOFAR). Oil palm plantations represent one of the dominant tropical agroecosystems that shape land use in Indonesia. Beneath the oil palm canopy, various understory plant specie…