| 长江口内外表层沉积物中营养元素的分布特征研究 |
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| 引用本文： | 吕晓霞,翟世奎,于增慧,张怀静.长江口内外表层沉积物中营养元素的分布特征研究[J].海洋通报,2005,24(2):40-45. |
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| 作者姓名： | 吕晓霞 翟世奎 于增慧 张怀静 |
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| 作者单位： | 中国海洋大学地球科学学院,266003 |
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| 基金项目： | 国家973计划资助项目(2002CB412409)和(2002CB412504) |
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| 摘 要： | 通过对长江口内外9个表层沉积物中不同形态碳、氮、磷含量的测定，得到了长江口内外表层沉积物中营养元素的分布特征，探讨了影响其分布的主要因素。长江口内外表层沉积物中的营养元素在河流段的分布波动较大，在口门附近海域分布较平缓。在三种营养元素中，IC、ON和IP分别为C、N、P的优势形态。在影响表层沉积物中营养元素分布的因素中，沉积物的粒度和上覆水体的盐度在其中起着重要的作用，同时还受到近岸排污和海洋生物生产的影响。
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| 关 键 词： | 营养元素 分布特征 表层沉积物 长江口 |
| 文章编号： | 1001-6392(2005)02-0040-06 |
Distribution Characteristics of Nutrients in the Surface Sediments of Yangtze River Estuary |
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| Lü Xiaoxia,ZHAI Shikui,YU Zenghui,ZHANG Huaijing.Distribution Characteristics of Nutrients in the Surface Sediments of Yangtze River Estuary[J].Marine Science Bulletin,2005,24(2):40-45. |
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| Authors: | Lü Xiaoxia ZHAI Shikui YU Zenghui ZHANG Huaijing |
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| Abstract: | The distribution characteristics of nutrients were obtained by analyzing the contents of different forms of carbon, nitrogen and phosphorus in the 9 surface sediment samples of Yangtze River Estuary. The distributions of nutrients in the surface sediment fluctuated in the lower salinity area, while even in the higher salinity area of Yangtze River Estuary. Inorganic carbon, organic nitrogen and inorganic phosphorus were the predominant forms of carbon, nitrogen and phosphorus, respectively. The sediment grain size and the salinity of overlying water play an important role among all the factors affecting the distributions of nutrients in the surface sediment which were also affected by the sewage discharge alongshore and the production of marine halobios. |
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| Keywords: | nutrient distribution characteristics surface sediment Yangtze River Estuary |
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