南大洋沉积物间隙水中营养盐分布及扩散通量研究

扈传昱; 潘建明; 刘小涯; 于培松; 薛斌

南大洋沉积物间隙水中营养盐分布及扩散通量研究

1.
中国极地研究中心, 国家海洋局极地科学重点实验室, 上海, 200136;国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江, 杭州, 310012
2.
国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江, 杭州, 310012

基金项目: 国家海洋局青年基金资助项目(2004605);国家海洋局极地科学重点实验室开放研究基金资助项目(KP200502);科研院所基础性工作专项资金重点资助项目(2002DEA30027-5)

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出版历程
- 收稿日期: 2005-04-25
- 修回日期: 2006-05-08

Study on distribution and benthic fluxesof nutrients in sediment interstitial water of the Southern Ocean

1.
Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China;Laboratory of Marine Ecosystem and Biogeochemistry of State Oceanic Administration, Hangzhou 310012, China
2.
Laboratory of Marine Ecosystem and Biogeochemistry of State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 利用中国第18次南极考察获得的沉积物样品,对南大洋沉积物间隙水中营养盐的含量及分布特征进行了研究,估算了营养盐的底部通量.结果表明,南大洋沉积物间隙水中的营养盐以高含量的硅酸盐、铵盐为主.在垂向分布上,硅酸盐在沉积物-水界面呈现出明显的浓度梯度,这种分布特征表明,在硅的早期成岩过程中溶出是主要过程.沉积物中有机物的降解反应主要在还原状态下进行.硅酸盐与铵盐存在明显的向上释放的通量.
- 营养盐 /
- 间隙水 /
- 沉积物 /
- 南大洋
Abstract: During the cruise of CHINARE-18, the concentration and profile characteristics of nutrients in the sediment interstitial water from the Southern Ocean were determined.The results show that the concentration of SiO₃-Si and NH₄-N are much higher than other nutrients.The profile of SiO₃-Si was characterized by sharp gradients near the sediment-water interface, profile distribution of silicate show that during the diagenetic reaction of silicate, dissolution is the main part.The organic matter decomposition was occurred under the anaerobic condition.Benthic fluxes of SiO₃ Si, NH₄-N were from interstitial water to overlying water, and regeneration of silicate and ammonium was the main part of the nutrient regeneration in sediment interstitial water of the study area.
- nutrient /
- interstitial water /
- sediment /
- Southern Ocean

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参考文献(17)

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