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In this thesis by analyzing the plane and the vertical distribution characteristics of typical waters of the East China Sea and the Yellow Sea paleoproductivity indicators (BSi, TOC), and the content of the corresponding surface sediments stations and columnar sediments era phytoplankton do linear regression to obtain the quantitative relationship between the sediment BSi, TOC content and phytoplankton. BSi, TOC as an indicator to nearly 200 years paleoproductivity reconstruction of the East China Sea and the Yellow Sea. Through the above study, the conclusion is as follows: a deposition rate were measured by 210Pb 10594,10694 and 12694 stations in the southern Yellow Sea to 0.350cm / a 0.143cm / a 0.153cm / a the three stations deposition history about 150a, 200a, 230a. H1-18 stations of the Yangtze Delta deposition rate of 0.225cm / a, the stations columnar-like sedimentary history of about 130 years. From a flat distribution, BSi and TOC presents from north to south, from near-shore to the distant sea gradually decreasing trend, this distribution trends and distribution of phytoplankton trends. From the vertical distribution of small fluctuations in the South Yellow Sea the BSi vertical content, content stability; Yangtze River Estuary and adjacent waters in addition to the maximum in 1966, the whole vertical content stability. This is related with the complexity of the depositional environment of the South Yellow Sea dynamic conditions for stability and the Yangtze Delta. TOC percentage increases with depth showed a decreasing trend, particularly in the southern Yellow Sea, which is related to the mineralization of organic matter decomposition. The survey to the southern Yellow Sea measured 4.60 20, mainly from land-based sources of organic matter in sediments. South Yellow Sea surface samples BSi, TOC and diatoms, Chla correlations were good, no good correlation with phytoplankton biomass volume. The correlation of the Yangtze Delta and Fujian and Zhejiang coast BSi phytoplankton are better, TOC and its correlation are not good. South Yellow Sea column samples BSi and phytoplankton standing stock volume has a good correlation, TOC and its correlation is not good. BSi peak and phytoplankton peak match history TOC content of high-value generally appear in the surface layer phytoplankton biomass in the history of diatom biomass values ??generally occur in the 1960s and the mid-1980s, Chla high values ??generally occur in the mid-1980s, so the TOC content of phytoplankton biomass, diatoms, Chla poor correlation. In addition to the the BSi and Chla bad, Yangtze Delta BSi, TOC, and the correlation of the phytoplankton were good. BSi indicators to project typical waters of the East China Sea and the Yellow Sea phytoplankton obtained: South Yellow Sea phytoplankton is generally in the 10 to 20 years of the 20th century, around the 1930s, 1960s and early 1980s and 1880s and a larger value in the mid 1950s and 1970s about the minimum. Yangtze Delta is generally around 60, 80 years, the late 1940s and the late 1880s, a larger value, the smaller the value appears in the 20th century, stable levels of other age. TOC as an indicator to project broadly in line with the conclusion of typical waters of the East China Sea and the Yellow Sea phytoplankton. Therefore, BSi and TOC can be used as paleoproductivity indicators retrieval paleoproductivity of the Yangtze Delta and nearby sea. BSi and TOC indicators separate projections of the Southern Yellow Sea phytoplankton there are obvious differences, this may be related to the low efficiency of TOC in sediments save. So BSi as indicators to rebuild the ancient marine productivity is superior to the TOC. Various forms of nitrogen and phosphorus in correlation with TOC, BSi and phytoplankton than the various forms of nitrogen, and various forms of phosphorus in the East China Sea and the Yellow Sea on the primary productivity. Yellow Sea TOC the BSi and phytoplankton and various forms of nitrogen, phosphorus than the Yangtze Delta hydrodynamic conditions of the Yellow Sea, which may be relatively calm, sediment grain size, while the estuarine complex dynamic conditions, sediment grain size various forms of nitrogen, phosphorus is not easy in this deposition. Temperature, terrestrial input, some correlation exists between the amount of anchovy resources phytoplankton paleoproductivity indicators, terrestrial input and anchovy resources associated more obvious. Terrigenous input and anchovy resources paleoproductivity.
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