云南九个民族中的近亲结婚调查

对云南9个民族[傣、哈尼、彝、布朗、基诺、拉祐、苦聪(人)、回、汉]共11,589起婚姻作了调查。发现:(1)城、乡之间,各民族与地区之间,近婚率差异极显著。(2)许多民族的近婚率均较国内发达地区同一民族高。(3)姑舅亲、倒姑舅、两姨亲及3/2表亲占9个民族近婚总数的84.7％。(4〕9个民族的平均近交系数同样较国内发达地区同一民族高,其中苦聪人的平均近交系数(0.018579)是目前国内最高数值之一,即使平均近交系数最低的汉族(0.001935)也明显高于北京、湖北宜昌和上海市区的汉族的平均近交系数。

AN INVESTIGATION ON CONSANGUINEOUS MARRIAGE IN NINE ETHNIC GROUPS OF YUNNAN PROVINCE

An investigation was carried out on 11593 cases of marriage in Dai, Hani, Yi, Jino, La-hu, Kucong, Hur and Han ethnic groups of Yunnan Province in 1985. The findings are as follows:1. The difference of consanguineous marriage percentage between the urban and rural regions, as well as between ethnic groups, was significant.2. The consanguineous marriage percentage in all nine ethnic groups investigated was higher than that of the same groups in developed regions of China.3. The marriages between first cousins and 1 1/2 consins accounted for 84.7% of thetotal number of consanguineous marriage.4. The average inbreeding coefficient (AIC) of nine ethnic groups investigated was hig-her phan that of the same groups in developed areas. Among them the AIC of Kucong (0.018579) was the highest in the country. Even the AIC of Han (0.001935), which showed the lowest value among nine ethnic groups, appeared to be higher than that of Han in Beijing Shanghai and Yichang City of Hubei Province.