地理科学 ›› 1999, Vol. 19 ›› Issue (3): 277-281.doi: 10.13249/j.cnki.sgs.1999.03.277

• 研究报道 • 上一篇    下一篇

潮汐盐沼环境特点及高分辨率海面变化有孔虫标尺

尤坤元, 朱大奎, 施晓冬   

  1. 南京大学海岸与海岛开发国家试点实验室, 南京210093
  • 收稿日期:1998-06-22 修回日期:1998-11-02 出版日期:1999-05-20 发布日期:1999-05-20
  • 基金资助:
    国家自然科学基金(49671071);南京大学现代分析中心测试基金(DL-5)资助;南京大学海岸与海岛开发国家试点实验室成果 编号:SCIEL 21197137

ENVIRONMENTAL CHARACTERISTICS AND HIGH RESOLUTION INDICATORS OF FORAMINIFER FOR CHANGE OF SEA LEVELS IN THE TIDAL SALTMARSH

You Kunyuan, Zhu Dakui, Shi Xiaodong   

  1. State Pilot Laboratory of Coast & Island Exploitation, Nanjing University, Nanjing 210093
  • Received:1998-06-22 Revised:1998-11-02 Online:1999-05-20 Published:1999-05-20

摘要: 潮汐盐沼是海洋边缘海环境的最边缘部分,是海陆过渡的真正边界。盐沼环境因素具明显的垂直分带性,各环境参数变化是典型的海洋或陆地不可相比的,盐沼坡度平缓,由海向陆的环境变化在这里分异清楚;沉积中垂向变化平面上得到极大的放大等。据国外研究,盐沼环境控制着有孔虫的特征和分布,利用盐沼有孔虫的垂直分带恢复古海平面变化,精确到±20cm,甚至±5cm,这在海面变化、环境演变、全球变化研究上有重要意义

Abstract: The tidal saltmarsh is the most marginal part of the marginal marineenvironments and the exact limit between marine and continent. Saltmarst has some sedimentary environmental Characteristics: the obvious vertical zonation of various environmental factors; greatvariations of every environmental parameter, compared with typical marine or terrene environment; a slight slope, on which the environmental succession from marine to continent is clearly divided and the vertical environmental succession in sediments is greatly amplified in lateral plane and so on. Tidal saltmarsh environment controls the features and distribution of saltmarsh foraminifera. According to the study abroad, the vetical zonation of saltmarsh foraminifera can be used as indicators for relocating former sea levels to an accuracy of ?20cm, even ?5cm. This quite high accuracy is important for studying sea level change, environment evolution and global change.

中图分类号: 

  • P736.22