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本文研究了青藏高原东北部不同地区人群中血硒水平分布状况。研究表明：青海省人群血硒含量均值为０．０７５μｇ／ｍｌ（ｎ＝５２３），是正常均值的７８．９５％。全省有６９．５７％的地区属于低硒区、缺硒区和严重缺硒区；有８４．７３％的人群血硒水平低于正常值。６个民族血硒值依次为汉族＞蒙古族＞藏族＞回族＞撒拉族＞土族。７种地理环境人群血硒含量分布，其顺序依次为城市＞纯牧业区＞半农半牧业区＞农业区＞州属农业区。为缺硒防治对策提供了科学依据。
In this paper, the distribution of blood selenium in different regions of the northeastern Qinghai-Tibet Plateau was studied. The research shows that the average blood selenium content in Qinghai Province is 0.075μg / ml (n = 523), which is 78.95% of the normal mean. The province has 69.57% of the area of low-selenium, selenium-deficient areas and severely selenium-deficient areas; 84.73% of the population selenium levels lower than normal. The selenium values of the six ethnic groups were Han> Mongolian> Tibetan> Hui> Salar> Tu nationality. Seven kinds of geographical environment of blood selenium content distribution, the order of the city> pure animal husbandry> semi-agricultural and semi-animal husbandry> agricultural> state agricultural area. Provide a scientific basis for the prevention and control measures of selenium deficiency.