热带海洋学报 ›› 2010, Vol. 29 ›› Issue (4): 40-47.doi: 10.11978/j.issn.1009-5470.2010.04.040cstr: 32234.14.j.issn.1009-5470.2010.04.040

• 海洋地质学 • 上一篇    下一篇

南海东北部和南部海域表层沉积物生物硅研究

周鹏1, 李冬梅1, 刘广山2, 门武2, 3, 纪利红2   

  1. 1. 国家海洋局南海环境监测中心, 广东 广州 510300; 2. 厦门大学海洋与环境学院, 福建 厦门 361005; 3. 国家海洋局第三海洋研究所, 福建 厦门 361005
  • 收稿日期:2009-05-07 修回日期:2009-08-11 出版日期:2010-07-31 发布日期:2010-07-29
  • 作者简介:周鹏(1976—), 男, 河南省开封市人, 硕士, 主要从事同位素海洋学研究。
  • 基金资助:

    国家基础研究发展计划项目(2005CB422305)

Biogenic silica in surface sediments of the northeastern and southern South China Sea

ZHOU Peng1, LI Dong-mei1, LIU Guang-shan2, MEN Wu2,3, JI Li-hong2   

  1. 1. South China Sea Environment Monitoring Center, State Oceanic Administration, Guangzhou 510300, China; 2. College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China; 3. Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
  • Received:2009-05-07 Revised:2009-08-11 Online:2010-07-31 Published:2010-07-29
  • About author:周鹏(1976—), 男, 河南省开封市人, 硕士, 主要从事同位素海洋学研究。
  • Supported by:

    国家基础研究发展计划项目(2005CB422305)

摘要:

本研究测定了南海东北部和南部海域表层沉积物的生物硅含量(SiO2%), 其含量范围分别为1.08%—3.01%和0.79%—9.06%, 平均值分别为1.76%和4.22%。研究结果表明, 南海表层沉积物中的生物硅含量与站位水深呈正相关关系; 南海东北部的表层沉积物中的生物硅含量与其中的矿物含量、铁离子浓度、间隙水中的营养盐浓度不存在明显的相关性; 南海南部海域表层沉积物中的生物硅含量与烧失量、有机碳含量、碳酸盐含量呈正相关关系, 与粘土矿物含量相关性不明显。

关键词: 生物硅, 表层沉积物, 南海东北部, 南海南部海域

Abstract:

Biogenic silica (BSi) contents in surface sediments from the northeastern South China Sea (NSCS) and southern South China Sea (SSCS) were measured. The BSi contents (SiO2%)were in the range of 1.08%–3.01% and 0.79%–9.06%, with the means of 1.76% and 4.22% for the NSCS and SSCS, respectively. The results showed that the BSi contents in surface sediments have positive correlation with water depth of the sampling locations. The BSi contents in the NSCS had no evident correlation with minerals, ferrum ion concentrations in surface sediments or nutrients in the pore waters of sediments. The BSi contents in the SSCS had positive correlations with organic material and carbonate contents but not with clay material contents.

Key words:  biogenic silica, surface sediment, northeastern South China Sea, southern South China Sea