我国苏北建川潮汐盐沼有孔虫垂直分带的发现和特征

尤坤元; 陈才俊; 吴小根; 施丙文

我国苏北建川潮汐盐沼有孔虫垂直分带的发现和特征

1.
南京大学海岸与海岛开发国家试点实验室, 江苏, 南京, 210008
2.
江苏省滩涂开发投资公司, 江苏, 南京, 210013

基金项目: 国家自然科学基金资助项目(49671071);国家“九五”科技攻关资助项目

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出版历程
- 收稿日期: 2001-06-08
- 修回日期: 2001-07-23

Discovery and features of vertical zonations of tidal salt-marsh foraminifera in Jianchuan, North Jiangsu Province, China

1.
State Pilot Laboratory of Coast & Island Exploitation, Nanjing University, Nanjing 210008, China
2.
Exploitation and Investment Company of Tidalflat, Jiangsu Province, Nanjing 210013, China

摘要

摘要: 通过三个断面加密有孔虫表层采样和精确高程测量,发现建川开敞型盐沼存在特征性盐沼有孔虫组合,这些组合与盐沼植被带相应,受高程控制,有明显的垂直分带,垂直带顶面即最高高潮位以上有孔虫突然消失.这个有孔虫垂直分布模式可高精度地恢复古海面(精度最高可达±5cm).该研究为我国高分辨恢复古海面提供了一个地区性的现代有孔虫标尺,同时该工作也填补了国外仅局限于研究隐蔽型海岸盐沼有孔虫垂直分带的不足.
- 苏北建川 /
- 开敞型盐沼 /
- 有孔虫垂直分带 /
- 古海面高分辨标尺
Abstract: Through densified surface sampling of foraminifer a and accurate elevation measurement along three transectlines in open-coast tidal sal-tmarsh of Jianchuan,particular sal-tmarsh foraminifera assemblages were found. The sal-tmarsh foraminifera assemblages are distributed in well-defined vertical zonations with respect to elevation and closely parallel marsh floral zonations.At the top of the vertical zonation all foraminifera disappear abruptly which are accurately located at the highest high water datum.This distribution pattern can be used to relocate the former sea levels accurately(to an accur acy of within ±5 cm).A modern regional criterion of foraminifera for relocating the former sea levels in high resolution in our country is provided,and deficiencies of studying the vertical zonation only in sheltered coast sal-tmarsh abroad are filled up.
- Jianchuan of North Jiangsu Province /
- open-coast tidal sal-tmarsh /
- vertical zonation of foraminifera /
- high resolution criterion for the former sea levels

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参考文献(21)

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