Abstract: The genetic variation and the regulation of genetic diversity distribution of Pinus koraiensis were studied by random amplified polymorphic DNA (RAPD) analysis. 72 individuals come from 8 plots in Liang Shui natural reserve were amplified by PCR reaction. A total of 96 loci were obtained from 1 6 random primers, among which 55 loci were polymorphic. In species level, the percentage of polymorphic loci is P=58.51%, Nei's gene diversity is H=0.2868 and Shannon's information index is I=0.3654. The degree of genetic differentiation among 8 plots Gst=0.0753. According to the characterized of every plot, relation ship between the level of genetic variation and character of population habitat were discussed.

Key words: Pinus koraiensis, RAPD, genetic variation, genetic diversity