中文摘要：

本文应用C、N稳定同位素分析方法，对山西乡宁内阳垣遗址先民的食物结构进行了分析，旨在揭示该遗址先民的生活方式及社会经济状况，探索戎狄对该遗址先民的影响。分析表明，该遗址先民的δ^13C平均值为-8．27‰，δ^15N平均值为9．54‰，由此推测他们主要的经济模式应为畜牧业。考古学证据显示该遗址主体文化为晋，但食物结构分析却反映，先民的经济模式主要为畜牧业，明显受到了游牧民族（戎狄）的影响。样品XNM50具有异常的δ^13C值（-15．36‰）和较高的δ^15N值（9．88‰），当与其从事狩猎活动有关。δ^13C和δ^15N的统计分析表明，不同性别的先民在食物结构上无明显差异，而不同规格的墓葬却差异明显。

英文摘要：

In this paper, we analyzed the carbon and nitrogen stable isotopes in human teeth from the Neiyangyuan Site, Shanxi Province, in order to reconstruct diets, reveal lifestyle, and explore the effects of the Rongdi Minority on the human economy. The site belongs to the Jin Culture, with its archaeological emphasis on agriculture, however mean values of δ^13 C （ - 8.27‰） and δ^15 N （9.54‰） in this research indicated that the lifestyle of these ancestors mainly relied on stoekbreeding. Obviously these results might be influenced by the horde （Rongdi）. The abnormal δ^13C value（ - 15.36‰）and the higher δ^15N value （9.88‰） from sample XNM50 indicated that hunting was a subsistence activity. Statistical analysis of δ^13C and δ^15N values showed that there were no distinct sexual differences in diets but there were significant differences between graves of different sizes.