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Contradicting findings were observed when decadal changes of primary productivity in the eastern Chinese shelf sea were learnt through examination of sediment cores (Lv, 2007; Zhou, 2007; Jin, 2009; Zhao, 2010; Yang et al., 2012). This inconformity may imply the regional differences of decadal environmental changes in different types of seas. To verify the possible regional differences, we examined...
Two sediment cores (S1 and S2 from shellfish and kelp cultivation areas, respectively) were collected from the Sanggou Bay maricultural area for the analysis of biogenic silica (BSi), an ideal proxy for the reconstruction of diatom density. The results show that prior to the advent of mariculture, the maximum diatom density in the two cores were observed in the 1880s before the first industrial revolution,...
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