华东地区６个青冈（Cyclobalanopsis glauca (Thunb. ) Oerst.）种群等位酶变异的检测结果表明，青冈种群的遗传变异较大，每位点含有的等位基因较多，平均为２．３个，种水平的平均每位点等位基因数目为.2.４。种群水平有效等位基因数目为1,446，种水平为1.467。Hardy-Weinberg平衡检验表明，青冈种群中不少位点偏离该平衡，其原因是种群内含有较多的纯合子，表现为多数位点的固定指数大于０，其中有９个位点的固定指数与０的偏差达到显著水平。

Cyclobalanopsts glacce, an evergreen broadleaved woody plant species, widely distributes in subtropical area of China. 6 populations in East China were chozen to study their allozymic variation. C. glovca maintains high genetic variation. At the population level, mean number of alleles per loci is 2. 3 (range from 2. 1 to 2. 5) lower than that of species level (2. 4). The effective numbers of alleles of 6 populations are 1. 3 10 to 1. 659 (mean 1. 4 4 6) , while at the species level it is 1. 467. Chi-square test indicates a deviation from Hardy-Weinberg equilibrium, which is caused by excess of homozygosites in populations, in a few loci.