ASOSIASI ULIN (Eusideroxylon zwageri Teijsm et Binn) TERHADAP JENIS DOMINAN PADA ZONA DOMESTIKA KEBUN RAYA SAMBAS KABUPATEN SAMBAS

Ulin or Belian or Ironwood with the scientific name Eusideroxylon zwageri Teijsm et Binn is a vegetation of Borneo endemic trees. Along with utilization to meet the needs of community boards and traded in an uncontrolled manner this tree is endangered. Due to the absence of a truly good cultivation business of intansi, the government, and the community, ironwood is threatened by its existence. The research aims to get the Ulin Association (Eusideroxylon zwageri Teijsm et Bin) against species that dominate in the Sambas Botanical Garden Domestic Zone, Sambas Regency. The study was conducted from 02-23 September. This research uses survey method. The research sample was taken by using a single square quadratic method by determining the area of the Observation Sample Plot Area (PCP) by purposive sampling with 25 sub plots per plot. The result has no real reciprocal relationship or association. But it shows the tolerance to live together in one area. Red Meranti is the most dominant species, especially Shorea pinanga is a species that dominates in the domestic zone with INP trees (59.3760), poles (58.2746), saplings (53.5636), seedlings (55.5699). Pole level Shorea pinanga has a strong association with the Eusideroxylon zwageri T et B plant (7.02), but has a very low association index (0.1428).Keyword : association, dominant, ulin