摘要
对取自辽东湾的433个表层沉积物中底栖有孔虫群落进行了定量分析,该区底栖有孔虫以广温广盐和低温种为主。运用Q型因子分析,得到4个有孔虫组合:组合Ⅰ为Elphidium magellanicum-Nonion akitaense-Buccella frigida;组合Ⅱ为Ammonia beccarii var.-Quinqueloculina akneriana;组合Ⅲ为Cribrononion vitreum-Buccella frigida-Protelphidium tuberculatum;组合Ⅳ为Ammoina annectens-Buccella frigida,揭示了有孔虫群落组合与沉积环境之间的关系。该区底栖有孔虫的分布主要受到温度、盐度、底质类型及沿岸流的共同影响。
A total of 433 samples obtained from surface sediments of the Liaodong Bay were analyzed quantitatively.The benthic foraminifera fauna in the studied area was mainly composed of eurythermal-euryhaline and cool-water species.Based on the Q-mode factor analysis,four assemblages are recognized： I.Elphidium magellanicum-Nonion akitaense-Buccella frigida assemblage,Ⅱ.Ammonia beccarii var.-Quinqueloculina akneriana assemblage,Ⅲ.Cribrononion vitreum-Buccella frigida-Protelphidium tuberculatum assemblage,and Ⅳ.Ammoina annectens-Buccella frigida assemblage.Data suggest that the benthic foraminiferal distribution is closely related to the sedimentary environments under the control of temperature,salinity,sediment type and alongshore currents.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2011年第2期87-94,共8页
Marine Geology & Quaternary Geology
基金
国家海洋局"908"专项CJ01区块海底底质调查与研究
关键词
底栖有孔虫
沉积环境
辽东湾
benthic foraminifera
sedimentary environments
Liaodong Bay
