江苏盱眙东阳军庄汉墓群出土人骨的稳定同位素分析

Stable Isotope Analysis of Human Bones Unearthed from the Han Tombs at the Junzhuang Site Located in Dongyang,Xuyi,Jiangsu Province

黄淮地区是传统粟稻混作区,西汉时麦作推广进入关键时期,但小麦在这一过程中对黄淮地区原有粟稻混作格局的影响并不明确。对江苏省盱眙县东阳军庄汉墓群出土人骨的稳定同位素分析结果显示,9例人骨骨胶原δ13C值的范围为-20.0‰^-18.4‰,均值-19.4±0.6‰(n=9),表明西汉时期盱眙先民主要以稻、麦等C3类植物为食,已经不再将粟作为主要粮食,结合该地区西汉以前的农业格局,可推测西汉时期苏北淮河流域已经开始由传统的稻粟混作模式向稻麦混作模式转变。将本文数据与我国同时期其他遗址的稳定同位素数据比较后发现,在原有稻粟混作区内,粟在先民饮食结构中的地位呈自西向东下降的趋势,反映了小麦种植在不同区域的不平衡发展,关中地区小麦的推广普及明显晚于东部近海地区。

The Huang-Huai had been an area of mixed farming of millet and rice since middle Neolith- ic. Despite the fact that wheat planting was introduced into this area during the Western Han period, it re- mains unclear whether the dominance of millet and rice in this area was affected at the time. The stable isoto- pic analysis on the human bones unearthed from the Han tombs located at the Junzhuang site, Dongyang, Xuyi, Jiangsu Province shows a δ13C value range of-20.0‰--18.4‰ （-19.4±0.6%o, n=9）, which indicates that people inhabited in this area in the Western Han mainly ate C3 plants such as rice and wheat and that millet was no longer a main food resource. Given the crop assemblage of this are before the Western Han, it is speculated that the mixed farming of millet and rice in the northern area of Jiangsu started to shift to that of rice and wheat in the Western Han period. A comparison to the stable isotopic data from other sites of the same period in China reveals a drop of millet composition from west to east, suggesting an uneven cultivation of wheat between the eastern and western part of this rear; wheat cultivation was practiced in Guanzhong ar- ea at a much later period than that of the eastern costal areas.