The Existence of Zingiberaceae Plants Under Forest Garden Stands in the Wan Abdul Rachman Grand Forest Park, Indonesia

Abstract

Zingiberaceae plants have varying tolerance to shade from the canopy of forest garden stands. It is important to know about the existence of Zingiberaceae plants under forest gardens stands because these plants have important functions, both ecological functions in the ecosystem and economic functions for humans. This research aims to determine the species of Zingiberaceae plant, population density, distribution area, and level of dominance of each plant species. The data was collected through vegetation surveys using nested rectangular plots with a sampling intensity of 2.5%. The data collected includes the species of Zingiberaceae plants, the number of individuals for each species, and the species of trees as components of forest garden stands. Data were analyzed by calculating density (D), frequency (F), and importance value index (IVI). The results showed that the composition of forest garden stands consisted of 25 tree species, dominated by 7 species, namely langsat, durian, rubber, candlenut, nutmeg, stink bean, and jointfir. Under the forest garden stands, 16 species of Zingiberaceae plants consisting of 6 genera were found. The species of Zingiberaceae plants found include javanese turmeric, galangal, fragrant ginger, ginger, lempuyang emprit, tepus, shampoo ginger, zedoary, forest galangal, crepe ginger, temu giring, purpel ginger, cardamom, torch ginger, wresah, and turmeric. There are 2 dominant species of Zingiberaceae plants, namely lempuyang emprit and galangal. Lempuyang emprit has IVI of 27.90%, density of 1,583.3 individuals/ha, and frequency of 0.63. Galangal has IVI of 24.17%, density of 1,416.7 individuals/ha, and frequency of 0.53.