Application of biologic silicon in modern sedimentary section to reconstruction of phytoplankton changes in the East China Sea and the Huanghai Sea during last 200 years

作     者：YANG Qian SONG Xianli SUN Yao HUANG Jiansheng 

作者机构：Key Laboratory of Marine Chemistry Theory and TechnologyMinistry of EducationOcean University of ChinaQingdao 266100China Yellow Sea Fisheries Research InstituteChinese Fisheries Science AcademyQingdao 266071China Mariculture Institute of Shandong ProvinceQingdao 266002China Xiamen UniversityXiamen 361005China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2012年第31卷第2期

页      面：70-77页

核心收录：

学科分类：081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：The National Key Basic Research Program of China under contract No.2006CB400007 the National Natural Science Foundation of China under contract No.40876088 

主　　题：typical sea areas of the East China Sea and the Huanghai Sea sediment BSi productivity reconstruction 

摘      要：Biomarkers had been widely used to reconstruct phytoplankton productivity, and this method was applied in the East China Sea and the Huanghai Sea （Yellow Sea）. In this study, Biologic Silicon （BSi） was used as productivity proxy to reconstruct productivity change of phytoplankton during last 200 years. The results show that the BSi contents of surficial＇sediments were in the range of 0.018%-2.516%, averaging 0.726%, and had a similar variation trend with phytoplankton biomass. The vertical distribution profiles revealed that BSi contents were relatively stable, in accordance with the variations of the contemporary phytoplankton standing crop index. According to the stability analysis of BSi in sediments, BSi was not degradaded for the past two hundred years and remained in sediments steadily. Thus, BSi in sediments had the potential to invert paleoproductivity. To conduct further survey, the linear regression equation between BSi contents and phytoplankton biomass index could be used to calculate the phytoplankton productivity by BSi, so that paleoproduetivity may be reconstructed during last 200 years.