Abstract:
Ulin (Eusideroxylon zwageri) is a tree composed of wet tropical forests which is spread over almost the entire southern part of Sumatra, The Bangka-Belitung Islands and the entire Kalimantan region, this type of ironwood (Eusideroxylon zwageri) which is also known as belian and borneo iron wood, including one of the native tree species on the island of Borneo. The purpose of this study was to calculate the potential distribution of ironwood in the Kintap Special Purpose Forest Area (KHDTK). Mapping the distribution of ironwood found in the Kintap Special Purpose Forest Area (KHDTK) plot. The method used is the transect line method. The results of the potential distribution of ironwood at the tree level are 17 and have an IVI value of 168,45, for the pole level as much as 16 and has an INP value of 55,63, for the stake level there is 1 has an INP value of 6.14, there are 8 seedlings, which have an IVI value of 53,87. Ironwood plants are mostly located at an altitude of 50-65 m above sea level because of rare flooding and erosion, so that ironwood plants can grow well from an ecological aspect and ironwood grows well in tropical forests.
