浮游有孔虫标准化壳体重量测试方法及在西太平洋的应用

安佰正; 李铁刚; 孙晗杰; 熊志方; 常凤鸣

doi:10.3799/dqkx.2015.072

浮游有孔虫标准化壳体重量测试方法及在西太平洋的应用

doi: 10.3799/dqkx.2015.072

安佰正^{1, 2,},
李铁刚^1, ,,
孙晗杰¹,
熊志方¹,
常凤鸣¹

1.
中国科学院海洋研究所，中国科学院海洋地质与环境重点实验室，山东青岛 266071
2.
中国科学院大学，北京 100049

基金项目:

中国科学院战略性先导科技专项项目 XDA10010305

国家海洋局专项项目 GASI-04-01-02

国家自然科学基金项目 41230959

国家自然科学基金项目 41206044

详细信息

作者简介:
安佰正(1984-)，男，博士研究生，主要从事古海洋学、浮游有孔虫研究.E-mail: an_baizheng@126.com

通讯作者:
李铁刚，E-mail: tgli@qdio.ac.cn

中图分类号: P736.2
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- 文章访问数: 3679
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- 被引次数: 0
出版历程
- 收稿日期: 2014-10-15
- 刊出日期: 2015-05-15

Application of Planktonic Foraminifera Size-Normalized Shell Weight in the Western Pacific

1.
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 使用标准化壳体重量法和传统壳体重量法分别对中国南海(South China Sea，简称SCS)站表层沉积物和MD06-3052岩心沉积物样品进行了测试，获得了浮游有孔虫种属Globigerinoides ruber(G. ruber)的标准化壳体重量和传统壳体重量.通过对SCS站表层沉积物中G. ruber标准化壳体重量与传统壳体重量的比较，认为在该海域使用标准化壳体重量替代性指标能够更好的排除壳体粒径的干扰.通过对MD06-3052岩心中G. ruber标准化壳体重量与南极Vostok冰心的CO₂浓度(pCO₂)曲线进行对比，认为标准化壳体重量方法能够较好的反映出表层海水[CO₃^2-]的变化.标准化壳体重量方法快速简便，指示性好，在探讨晚更新世以来表层海水在全球碳循环的重要作用中，是一个很有潜力的指标.
- 标准化壳体重量 /
- 浮游有孔虫 /
- 碳酸盐 /
- 碳循环 /
- 西太平洋 /
- 海洋地质
Abstract: Planktonic foraminifera Globigerinoides ruber (G. ruber) shell weight of sediment samples from South China Sea (SCS) located in the South China Sea and MD06-3052 located in the western Pacific are tested using size-normalized shell weight method and traditional shell weight method. In comparison with traditional shell weight method, SCS data indicate that the size-normalized shell weight method for G. ruber can significantly reduce the influence of test size on foraminifera shell weight in the study area. Comparing the variation curves of CO₂ concentration (pCO₂) recorded in Vostok ice core, MD06-3052 G. ruber data show that size-normalized shell weight can indicate the change of sea surface water [CO₃^2-] more effectively. The size-normalized shell weight method provides a reliable and rapid proxy for the weight analyses in the paleoceanographic study, and a potential proxy in studying the influence of surface sea water in global carbon cycle since Late Pleistocene.
- size-normalized shell weight /
- planktonic foraminifera /
- carbonate /
- carbon cycle /
- the western Pacific /
- marine geology

HTML全文

图 1 浮游有孔虫标准化壳体重量方案流程

Fig. 1. Process of planktonic foraminifera size-normalized shell weight method

下载: 全尺寸图片幻灯片

图 2 ImageJ软件对图像进行锐化和寻找边缘

Fig. 2. Sharpen and find edges using ImageJ

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图 3 使用ImageJ软件获得有孔虫的最小外切圆

Fig. 3. Get minimum excircle of foraminifera shell using ImageJ

下载: 全尺寸图片幻灯片

图 4 SCS站浮游有孔虫G. ruber传统壳体重量方法与标准化壳体重量方法的对比

传统壳体重量(红色)与壳体直径的相关系数R=0.840；标准化壳体重量(蓝色)与壳体直径的相关系数R=0.299

Fig. 4. Traditional shell weight method and size-normalized shell weight method for G. ruber in SCS

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图 5 SCS站表层沉积物浮游有孔虫G. ruber壳体重量与样本中壳体总数的关系

Fig. 5. Relationship of shell weight and sum of G. ruber of surface sediments in SCS

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图 6 MD06-3052岩心浮游有孔虫G. ruber传统壳体重量方法(a)与标准化壳体重量方法(b)的对比

图 6a中相关系数R=0.742；图 6b中相关系数R=0.451

Fig. 6. Traditional shell weight method (a) and size-normalized shell weight method (b) for G. ruber in MD06-3052

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图 7 MD06-3052岩心浮游有孔虫G. ruber标准化壳体重量(蓝色曲线)与南极冰心大气pCO₂变化曲线(粉色曲线)对比

Fig. 7. Size-normalized shell weight of planktonic foraminifera G. ruber in MD06-3052(blue line) and Vostok pCO₂ record (pink line)

下载: 全尺寸图片幻灯片

表 1 MD06-3052岩心浮游有孔虫G. ruber标准化壳体重量及传统壳体重量

Table 1. Size-normalized shell weight and traditional shell weight of planktonic foraminifera G. ruber from MD06-3052

样品号	样品层位(cm)	年代(ka BP)	壳体数量(个)	传统壳体重量(μg)	标准化壳体重量(μg)
1	54~56	3.34	6	7.83	8.84
2	182~184	10.58	11	8.45	10.60
3	238~240	14.45	6	12.50	12.97
4	278~280	19.00	13	14.85	14.07
5	342~344	24.41	11	13.00	13.23
6	390~392	28.00	9	12.89	12.97
7	430~432	30.86	6	12.33	12.73
8	486~488	34.87	11	12.64	13.02
9	574~576	41.17	11	13.64	13.84
10	646~648	46.25	11	11.27	12.46
11	678~680	48.32	8	10.00	11.06

下载: 导出CSV

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