华东师范大学学报(自然科学版) ›› 2012, Vol. 2012 ›› Issue (4): 149-156, 163.

• 环境工程 地理学 • 上一篇    下一篇

淀山湖叶绿素a分布特征及其与浮游植物密度的相关性

胡雪芹1,王强1,马明睿1,徐春燕1,由文辉1,2   

  1. 1.华东师范大学 环境科学系, 上海 200062; 2.华东师范大学 上海市城市化生态过程与生态恢复重点实验室, 上海 200062
  • 收稿日期:2011-07-01 修回日期:2011-10-01 出版日期:2012-07-25 发布日期:2014-12-15

Distribution characteristics of chlorophyll a and its relationship with phytoplankton density in Lake Dianshan

HU Xue-qin 1, WANG Qiang 1, MA Ming-rui 1, XU Chun-yan 1, YOU Wen-hui 1,2   

  1. 1.Department of Environment Science, East China Normal University, Shanghai  200062, China;  2.Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200062, China
  • Received:2011-07-01 Revised:2011-10-01 Online:2012-07-25 Published:2014-12-15

摘要: 根据2009年10月至2010年9月进行的淀山湖生态调查资料,报道了浮游植物叶绿素a浓度与浮游植物密度的水平与时间分布特征,并探讨了二者的相关性.结果表明:(1)淀山湖浮游植物叶绿素a浓度范围为0.87~139.43mg/m3、平均值为25.35±2.71mg/m3;(2)浮游植物
密度范围为0.40~210.91×106ind/L、平均值为(10.02±2.45)×106ind/L;(3)浮游植物叶绿素a浓度与浮游植物密度在时间分布上呈现春夏季较高,秋冬季较低的特点,在水平分布上呈现北高南低的特点;(4)叶绿素a浓度与浮游植物密度的相关性分析表明,浮游植物总密度与叶绿素a浓度在0.01水平下显著相关,绿藻门、蓝藻门、硅藻门、隐藻门浮游植物对叶绿素a浓度的贡献较高,不同浮游植物对叶绿素a浓度的贡献随季节发生变化.

关键词: 淀山湖, 叶绿素a, 浮游植物密度, 分布特征, 相关性

Abstract: This paper reported the horizontal and temporal distribution pattern of chlorophyll a and phytoplankton density as well as their relationships, which were based on the ecology investigation carried out in Lake Dianshan from  October 2009 to September 2010. The results showed that:(1) The chlorophyll a concentration was ranged from 0.87 to 139.43mg/m3  with a mean of(25.35±2.71)mg/m3;(2) The phytoplankton density was ranged from 0.40 to 210.91×106ind/L with a mean of (10.02±2.45)×106ind/L;(3) In the temporal scale,both chlorophyll a and phytoplankton density were higher in spring and summer and lower in autumn and winter. In the horizontal scale,  they were higherin northern sites than in southern sites;(4) Correlation analysis showed that chlorophyll a and phytoplankton density were significantly correlated (Sig.≤0.01), and Chlorophyta,Cyanophyta,Bacillariophyta and Cryptophyta′s densities′ contributions to chlorophyll a concentration were higher than other categories.And the contributions varied with seasons.

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