底泥微生物活性对蓝藻水华水柱及沉积物间隙水氮磷分布的影响

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Abstract

Sediments from ponds with and without algal blooms were sampled for a comparison study,and the vertical distribution of NH₄⁺-N、NO₃^--N and PO₄^3--P within the interstitial water were analyzed,as well as the microbial activity(FDA) and alkaline phosphatase (APA) in surface sediments.The results showed the concentration of NH₄⁺-N increased from superficial waters to interstitial waters in both types of sediments,indicating a risk of NH₄⁺-N releasing from interstitial waters.However,the concentrations of NO₃^--N and PO₄^3--P decreased.The decreasing trend was observed for organic matter content(reflected by Loss-on-Ignition,LOI),FDA activity,and APA in the top 10 cm sediments.Correlation analyses showed that the concentration of NH₄⁺-N in interstitial waters was positively correlated with the activities of FDA and APA in surface sediments(0-10cm),suggesting that the effect of microbe on N decomposition and mineralization was mainly influenced by the activities of APA and FDA in an anaerobic environment.

Key words： nutrients sediment microbial activity alkaline phosphatase activity algal bloom waters

Received: 25 June 2011

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	Articles by authors
	SUN Fang
	ZHENG Zhong-ming
	LU Kai-hong
	ZHAI Hai-jia
	SHAO Lu-lu

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SUN Fang,ZHENG Zhong-ming,LU Kai-hong, et al. Microbe activities in the sediment and its influences on N、P distribution of algae bloom water column and interstitial waters[J]. , 2011, 30(3): 217-222.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I3/217

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