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引用本文:吴阿娜,朱梦杰,汤琳,朱刚,汪琴,张锦平.淀山湖蓝藻水华高发期叶绿素a动态及相关环境因子分析.湖泊科学,2011,23(1):67-72. DOI:10.18307/2011.0111
WU Enuo,ZHU Mengjie,TANG Lin,ZHU Gang,WANG Qin,ZHANG Jinping.Dynamics of chlorophyll-a and analysis of environmental factors in Lake Dianshan during summer and autumn. J. Lake Sci.2011,23(1):67-72. DOI:10.18307/2011.0111
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淀山湖蓝藻水华高发期叶绿素a动态及相关环境因子分析
吴阿娜, 朱梦杰, 汤琳, 朱刚, 汪琴, 张锦平
上海市环境监测中心, 上海 200030
摘要:
根据2008年5-9月专项监测数据, 分析蓝藻水华高发期淀山湖叶绿素a浓度的动态变化, 及其与pH、溶解氧、TN、TP等环境因子的相互关系.结果表明, 淀山湖蓝藻水华高发期叶绿素a存在明显的时间变化和空间分异, 特别是叶绿素a的峰值共对应了3次水华暴发过程.其叶绿素a对数与总磷对数呈极显著正相关, 与硝酸盐氮、TN/TP呈负相关, 与总氮、氨氮等则无显著相关性;这表明淀山湖可能是一定程度的磷限制性湖泊.此外, 叶绿素a与水温、pH、溶解氧呈显著正相关, 与透明度存在极显著负相关。
关键词:  淀山湖  叶绿素a  蓝藻水华  环境因子  相关分析
DOI:10.18307/2011.0111
分类号:
基金项目:上海市科委项目(08DZl203007)资助
Dynamics of chlorophyll-a and analysis of environmental factors in Lake Dianshan during summer and autumn
WU Enuo, ZHU Mengjie, TANG Lin, ZHU Gang, WANG Qin, ZHANG Jinping
Shanghai Environmental Monitoring Center, Shanghai 200030, P.R.China
Abstract:
According to the monitoring data at 13 sampling sites of Lake Dianshan from May to September 2008, the relationship between chlorophyll-a concentrations and environmental factors(water temperature, pH, DO, TN and TP) was investigated.The results indicated that there was an obvious temporal and spatial variation of chlorophyll-a.The first eyanobaeterial bloom in 2008 occurred On July 23 at Qiandungang site and Yonyongchang site.The most severe bloom covered a total area of 17km2 on August 27.Significandy positive logarithmic correlation was found between chlorophyll-a and total phosphorus, but not for ammonia nitrogen.nitrate nitrogen and total nitrogen.Phosphorus might be the main limited factor in Lake Dianshan.Significantly positive correlations were found between chlorophyll-a concentration and water temperature, pH, dissolved oxygen, and markedly negative correlation between chlorophyll-a and transparency.
Key words:  Lake Dianshan  chlorophyll-a:cyanobacterial bloom  environmental factor  correlation analysis
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