滇池浮游植物群落特征及与环境因子的典范对应分析

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Abstract

Phytoplankton community of Dianchi Lake were investigated in March, May, July and November, 2013. Totally 6 phyla, 31genera of phytoplankton were identified which were mainly composed of Chlorophyta, Cyanophyta and Bacillariophyta. The average phytoplankton abundance was 7482×10⁴ cells/L. The Chlorophyta was the primary species, and which the Scenedesmus was dominating species in March. However, the Cyanophya dominated by the Microcystis was the primary species in May, July and November. The results of canonical correspondence analysis for the relationship between 31genera of phytoplankton and 10 environmental factors showed that the conductivity, dissolved oxygen (DO), total nitrogen (TN), total phosphorus (TP), and permanganate indexes (COD_Mn) were found to be main environmental factors effecting the distribution characteristics of phytoplankton community. Furthermore, the Cyanophyta was found to tolerate the higher concentration of nitrogen and phosphorus nutrients, and it could also be affected by the conductivity, permanganate indexes, dissolved oxygen and pH. The Chlorophyta could not only accommodate to the higher pH, water temperature and permanganate indexes, but also be affected by concentration of nitrogen and phosphorus nutrients, dissolved oxygen and conductivity. The Bacillariophyta could adapt to higher pH and permanganate indexes, and also be affected by concentration of nitrogen and phosphorus nutrients, water temperature, dissolved oxygen and conductivity.

Key words： Dianchi Lake phytoplankton community structure environmental factors canonical correspondence analysis

Received: 15 July 2015

PACS:

X132

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	Articles by authors
	WANG Hua
	YANG Shu-ping
	FANG Sheng-zhong
	YU Fu-chao
	FENG Wen-bo
	LIU Li-ping

Cite this article:

WANG Hua,YANG Shu-ping,FANG Sheng-zhong等. Canonical correspondence analysis of relationship between characteristics of phytoplankton community and environmental factors in Dianchi Lake[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(2): 544-552.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I2/544

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