| 长江口柱状沉积物中有机质C/N比的研究 |
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| 引用本文： | 吕晓霞,翟世奎,牛丽凤. 长江口柱状沉积物中有机质C/N比的研究[J]. 环境化学, 2005, 24(3): 255-259 |
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| 作者姓名： | 吕晓霞 翟世奎 牛丽凤 |
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| 作者单位： | 1. 中国海洋大学地球科学学院,青岛,266003
2. 青岛大学师范学院教育科学与技术系,青岛,266071 |
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| 基金项目： | 国家973计划(2002CB412409)，(2002CB412504)资助项目. |
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| 摘 要： | 对长江口四个站位沉积物中有机质的C／N比在垂向上的分布进行了研究，在影响沉积物中有机质C／N比的环境因素中，上覆水体的水深、盐度、密度以及浊度对其有一定的影响．在研究沉积物中有机质C／N比的分布及其影响因素的基础上，进一步估算了陆源输入和海洋自生有机碳在这四个站位沉积物有机碳中所占的比例，结果表明，海洋自生组分占沉积物总有机碳的比例分别为：53．57％(8号站位)、20．34％(11号站位)，12．28％(17号站位)和32．73％(26号站位)．
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| 关 键 词： | 长江 柱状沉积物 有机质 C／N比 有机碳 |
STUDY ON THE C/N RATIOS OF ORGANIC MATTERS IN THE CORE SEDIMENTS OF THE YANGTZE RIVER ESTUARY |
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| L Xiao-xia,ZHAI Shi-kui,NIU Li-feng. STUDY ON THE C/N RATIOS OF ORGANIC MATTERS IN THE CORE SEDIMENTS OF THE YANGTZE RIVER ESTUARY[J]. Environmental Chemistry, 2005, 24(3): 255-259 |
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| Authors: | L Xiao-xia ZHAI Shi-kui NIU Li-feng |
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| Affiliation: | L(U) Xiao-xia,ZHAI Shi-kui,NIU Li-feng |
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| Abstract: | The distributions of C/N ratios of the organic matters in the four cores of the Yangtze river estuary are different due to the different sources and the influence of sediment grain size and circumstance. The water depth, salinity, density and turbidity of the overlying water are the predominant factors to affect the distributions of C/N ratios of organic matters in circumstance factors. After researching the distributions of C/N ratios and their affecting factors, the proportions of terrestrial and marine genous carbon to the total organic carbon are calculated that the proportions of marine genous carbon are 53.57% (site 8), 20.34% (site 11), 12.28% (site 17) and 32.73% (site 26) respectively. |
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| Keywords: | Yangtze river estuary sediment organic matter C/N ratio. |
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