| 碳同位素在史前粟黍鉴定中的应用初探 |
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| 引用本文： | 安成邦,吉笃学,董广辉,王辉,董惟妙,贾鑫,马敏敏.碳同位素在史前粟黍鉴定中的应用初探[J].第四纪研究,2010,30(2):410-414. |
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| 作者姓名： | 安成邦 吉笃学 董广辉 王辉 董惟妙 贾鑫 马敏敏 |
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| 作者单位： | 1. 兰州大学资源与环境学院西部环境教育部重点实验室,兰州,730000
2. 甘肃省考古与文物研究所,兰州,730000 |
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| 基金项目： | 国家科技支撑计划项目，国家自然科学基金项目，部分受到教育部新世纪优秀人才支持计划项目资助 |
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| 摘 要： | 以甘肃省秦安县和礼县考古遗址中发现的粟和黍为研究对象，对其进行了碳同位素的测定，并开展了碳同位素和形态学鉴定方法的检验。结果表明，粟和黍的碳同位素值是不同的，即使是炭化的考古样品，粟和黍的碳同位素值仍然是有差别的，粟较黍的碳同位素值总体偏正。这一方法可以比较简便地检验形态学鉴定的结果是否正确。如果能够建立不同地区不同时段粟和黍的碳同位素值数据库，将会为粟和黍的鉴别提供依据。
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| 关 键 词： | 粟 黍 史前 碳同位素 |
APPLICATION OF CARBON ISOTOPE IN IDENTIFYING PREHISTORIC FOXTAIL MILLET AND COMMON MILLET |
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| An Chengbang,Ji Duxue,Dong Guanghui,Wang Hui,Dong Weimiao,Jia Xin,Ma Minmin.APPLICATION OF CARBON ISOTOPE IN IDENTIFYING PREHISTORIC FOXTAIL MILLET AND COMMON MILLET[J].Quaternary Sciences,2010,30(2):410-414. |
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| Authors: | An Chengbang Ji Duxue Dong Guanghui Wang Hui Dong Weimiao Jia Xin Ma Minmin |
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| Institution: | Key Laboratory of Western China's Environmental Systems|Ministry of Education|and College of Earth and Environment Sciences|Lanzhou University|Lanzhou730000； |Institute of Archaeology and Relics of Gansu Province|Lanzhou730000 |
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| Abstract: | Origin of agriculture researches in the world show that Northern China is the only one where agriculture did not seem to unfold,in situ,from local hunter-gatherers in ten instances known worldwide in which agriculture evolved independently. And foxtail millet(Setaria italica)and common millet(or broomcorn millet; Panicum miliaceum)were staple foods in the semiarid regions of prehistoric China before the popularity of rice and wheat,and even today are still important foods there. However,archaeobotanical remains of foxtail millet and common millet are difficult to distinguish mainly because of their very small sizes and very similar shapes. Here we try to discriminate foxtail millet and common millet by using δ~(13)C values as indicator. There are three kinds of C_4 plants based on photosynthesis: PEP-CK type; NADP-ME type,which includes foxtail millet; NAD-ME type,which includes common millet. Other studies show that different types of C_4 plants have different δ~(13)C values. The charred botanical samples studied were collected from archaeological sites,Qin′an County and Li County,Gansu Province. They were identified as foxtail millet and common millet in terms of morphology. Using a Dleta Plus produced by Finigan, δ~(13) C of each sample were analyzed of 12 couples of foxtail millet and common millet from Qin′an and 14 couples from Li. For Qin′an County's samples,the δ~(13) C values of foxtail millet are -11.36‰～-9.78‰,averaging -10.39‰ and the δ~(13) C values of common millet are -11.85‰～-10.02‰,averaging -10.87‰,while for Li County's samples,the δ~(13) C values of foxtail millet are -11.76‰～-9.59‰,averaging -10.46‰ and the δ~(13) C values of common millet are -11.93‰～-10.49‰,averaging -11.26‰. As a whole,the δ~(13) C of charred foxtail millet trends more toward the positive than the δ~(13) C of charred common millet does. This trend may be used to test if the morphological distinguishing between foxtail millet and common millet is correct. If a database of δ~(13) C of foxtail millet and common millet,which are of different time and from different regions,is constructed,it will help distinguishing between foxtail millet and common millet in agricultural archaeology. |
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| Keywords: | foxtail millet common millet prehistoric carbon isotope |
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