南大洋普里兹湾沉积物中生物硅含量与分布

扈传昱; 姚梅; 于培松; 潘建明; 张海生

南大洋普里兹湾沉积物中生物硅含量与分布

1.
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;国家海洋局极地科学重点实验室, 中国极地研究中心, 上海, 200136
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: 中国基地科学战略研究基金项目“普里兹湾生物硅的保存机制及生物地球化学意义研究”;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)

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出版历程
- 收稿日期: 2007-01-18
- 修回日期: 2007-06-25

Biogenic silica in surficial sediments of Prydz Bay of the Southern Ocean

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

摘要

摘要: 利用中国第18,21次南极考察获得的沉积物样品,对南大洋普里兹湾沉积物中生物硅(BSiO₂)的含量以及分布特征进行了初步研究.结果表明:普里兹湾表层沉积物中生物硅含量丰富,生物硅含量在4.89%~85.41%之间变化,平均为30.90%.最高值出现在湾内的IV-10站.生物硅的垂向分布与间隙水中硅酸盐呈现相反的变化趋势.表层沉积物中生物硅和有机碳分布趋势与表层海水中叶绿素a、初级生产力的分布趋势密切相关,最大值均出现在普里兹湾环流中心区域,较好地反映了上层水体中初级生产力的变化状况.
- 生物硅 /
- 沉积物 /
- 普里兹湾 /
- 南大洋
Abstract: The content and distribution of biogenic silica were investigated in sediment cores from the Southern Ocean (Prydz Bay) during the CHINARE-18/21 cruise.The results show that the content of biogenic silica is ranged from 4.89% to 85.41%, and the average content of biogenic silica is 30.90%, the highest value occurs at the IV-10 station.The profile of BSiO₂ is contrast to the profile of SiLicate in the interstitial water.The contents of biogenic silica and organic carbon in the surface sediments in the central area of Prydz Baygyre were much higher than those in other area, and closely related to the Chl a content and primary productivity of phyt oplankton in the surface water column.
- biogenic silica /
- surface sediment /
- Prydz Bay /
- Southern Ocean

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