大亚湾大辣甲水域叶绿素a及营养盐的垂直分布与季节变化

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Abstract

In order to systematically examine the vertical distribution of chlorophyll a and nutrients, and to provide the original data for marine ecosystem simulation, water quality and marine ecosystem data were collected in four different seasons from October 2007 to September 2008. The sampling site was located at the central point between Dalajia Island and Sangzhou Island. The study examined the vertical distribution and seasonal variation of chlorophyll a and nutrients, and analyzed the correlation between chlorophyll a and dissolved inorganic carbon (DIC), PO₄-P, and SiO₃- Si. The results showed that the variations of chlorophyll a, DIN, PO₄-P and SiO₃-Si were 0.50-5.80 mg·L^-1, 0.023-0.159 mg·L^-1, 1.606-19.69 μg·L^-1 and 0.065-1.13 mg·L^-1, respectively. The seasonal variations of chlorophyll a were higher in summer, spring, and winter but lower in autumn. SiO₃-Si and DIN were similar, which were higher in summer, autumn, and winter, but lower in spring. PO₄-P showed a reverse trend, which was the lowest in summer. The impact of DIN and SiO₃-Si on chlorophyll a was low in vertical variation. The PO₄-P and chlorophyll a showed a positive correlation, indicating that the impact of PO₄-P on chlorophyll a was great.

Key words： Daya Bay chlorophyll a nutrients vertical distribution seasonal variation

Received: 25 February 2013

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	Yu Xi-jun
	Huang Dao-jian
	Guo Zhen-ren
	Qi Shi-bin

Cite this article:

Yu Xi-jun,Huang Dao-jian,Guo Zhen-ren, et al. The vertical distribution and seasonal variations of chlorophyll a and nutrients content in Dalajia waters in Daya Bay[J]. , 2013, 32(1): 78-83.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I1/78

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