苏州河浮游植物群落恢复的生境条件研究

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Abstract

A research on phytoplankton community and physical and chemical factors were conducted from Apr. 2005 to May 2006 in Suzhou Creek, the phytoplankton community status and the water quality status were analyzed, and the relationship between phytoplankton and water quality was also analyzed, the results showed that the water temperature, TP, TN, COD_Cr had significant impact on phytoplankton community and the impact had thresholds which were as follows:water temperature:15℃,TP:0.6 mg·L^-1, TN:10 mg·L^-1, COD_Cr:20 mg·L^-1. In the ecological restoration of Suzhou Creek, when the physical and chemical factors were lower than the thresholds, the appearance frequency and density percentage of Chlorella were low, while the appearance frequency and density percentage of Cyclotella meneghiniana were high; when the physical and chemical factors were higher than the thresholds, the appearance frequency and density percentage of Chlorella were high, while the appearance frequency and density percentage of Cyclotella meneghiniana were low. So the thresholds of physical and chemical factors impacting on phytoplankton should be considered to restore the water quality in Suzhou Creek.

Key words： Suzhou Creek Restoration Phytoplankton Thresholds

Received: 25 February 2010

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	GU Xiao-ying
	YOU Wen-hui

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GU Xiao-ying,YOU Wen-hui. Research on the habitat condition of phytoplankton community’s restoration in Suzhou Creek[J]. , 2010, 29(1): 30-34.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2010/V29/I1/30

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