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0.87～139.43 mg/m'、平均值为25.35±2.71mg/m3;(2)浮游植物密度范围为0.40～210.91×106 ind/L、平均值为(10.02±2.45)×106 ind/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.
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 139.43 mg/m3 with a mean of （25.35 ＋ 2.71） mg/m3 ; （2） The phytoplankton density was ranged from 0. 40 to 210. 91 × 106 ind/L with a mean of （10.02 ＋ 2.45） × 106 ind/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 higher in northern sites than in southern sites; （4） Correlation analysis showed that chlorophyll a and phytoplankton density were significantly cor related （Sig. ≤0.01）, and Chlorophyta, Cyanophyta, Bacillariophyta and Cryptophyta＇s densi ties＇ contributions to chlorophyll a concentration were higher than other categories. And the con tributions varied with seasons.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第4期149-156,163,共9页
Journal of East China Normal University(Natural Science)
基金
上海市科委项目(08DZl203102
08DZ1203002
08DZl203101)
关键词
淀山湖
叶绿素A
浮游植物密度
分布特征
相关性
Lake Dianshan chlorophyll a
phytoplankton density
distribution characteristics
correlation
