| 洱海沉积物中有机质和DNA的分布特征 |
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| 引用本文： | 魏中青,刘丛强,梁小兵,汪福顺.洱海沉积物中有机质和DNA的分布特征[J].沉积学报,2004,22(4):672-675. |
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| 作者姓名： | 魏中青 刘丛强 梁小兵 汪福顺 |
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| 作者单位： | 1.中国科学院地球化学研究所环境地球化学国家重点实验室 贵阳 550002; |
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| 基金项目： | 中国科学院知识创新工程项目
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国家自然科学基金 |
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| 摘 要： | 测定了洱海沉积物中有机碳、氮,提取了沉积物中的DNA。有机碳氮呈现相同的变化趋势降解主要发生在表层10cm;7cm前后氧化-还原条件变化,微生物电子受体改变,所以有机质的降解方式不同,出现不同的特征。利用分子生物学和地球化学相结合的方法,能更全面的认识和理解早期成岩过程。
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| 关 键 词： | DNA 分解速率常数 有机碳 |
| 文章编号： | 1000-0550(2004)04-0672-04 |
| 收稿时间： | 2003-12-26 |
| 修稿时间： | 2003年12月26日 |
Characteristics of Organic Matter and DNA in Sediments of Lake Erhai |
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| WEI Zhong qing , LIU Cong qiang LIANG Xiao bing WANG Fu shu.Characteristics of Organic Matter and DNA in Sediments of Lake Erhai[J].Acta Sedimentologica Sinica,2004,22(4):672-675. |
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| Authors: | WEI Zhong qing LIU Cong qiang LIANG Xiao bing WANG Fu shu |
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| Institution: | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry,Chinese Academy of Sciences, Guiyang 550002;2.Graduate School of the Chinese Academy Sciences, Beijing 100039 |
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| Abstract: | The contents of organic carbon and nitrogen were measured and DNA was extracted in the sediments of Lake Erhai. The distribution of organic carbon and nitrogen is consistent, i.e. degradation of organic carbon and nitrogen occurred in 10cm surface sediments and the modes of degradation change at 7cm, resulting in the different characteristics. Using the methods of molecular biology connecting with geochemistry, diagenesis process can be understood deeply. |
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| Keywords: | DNA degradation organic carbon diagenesis |
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