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引用本文:潘晓洁,常锋毅,沈银武,刘永定,李敦海,李根保,肖邦定.滇池水体中微囊藻毒素含量变化与环境因子的相关性研究.湖泊科学,2006,18(6):572-577. DOI:10.18307/2006.0603
PAN Xiaojie,CHANG Fengyi,SHEN Yinwu,LIU Yongding,LI Dunhai,LI Genbao,XIAO Bangding.The correlation between the variation of microcystin content and environment factors in Di-anchi Lake. J. Lake Sci.2006,18(6):572-577. DOI:10.18307/2006.0603
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滇池水体中微囊藻毒素含量变化与环境因子的相关性研究
潘晓洁1,2, 常锋毅1,2, 沈银武1, 刘永定1, 李敦海1, 李根保1, 肖邦定1
1.中国科学院水生生物研究所, 武汉430072;2.中国科学院研究生院, 北京100039
摘要:
本文对2003年4-12月滇池马村湾、海东湾微囊藻毒素和总磷、总氮、溶解氧、透明度、光照强度、叶绿素a、pH值、水温及微囊藻种群优势度进行了分析,讨论了以上指标在滇池马村湾和海东湾的分布和月变化情况以及与微囊藻毒素含量之间的关系.相关性分析表明马村湾、海东湾微囊藻毒素在水体中分布与总氮和氮磷比之间呈现非常显著的负相关性(P<0.01);与透明度、光照强度和微囊藻种群优势度存在显著的正相关性(P<0.05).在影响微囊藻毒素的各因素中,运用多因素逐步回归分析得知马村湾、海东湾微囊藻毒素浓度主要南水体的总氮、总磷、叶绿素a和溶解氧以及透明度决定(R2=0.560,P<0.017).
关键词:  滇池  微囊藻毒素  相关分析
DOI:10.18307/2006.0603
分类号:
基金项目:973项目(2002CB412300);中国科学院前沿性创新课题(220316)联合资助.
The correlation between the variation of microcystin content and environment factors in Di-anchi Lake
PAN Xiaojie1,2, CHANG Fengyi1,2, SHEN Yinwu1, LIU Yongding1, LI Dunhai1, LI Genbao1, XIAO Bangding1
1.Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, P. R. China;2.Gradute School of Chinese Academy of Science, Beijing 100039, P. R. China
Abstract:
This paper analyzed the distribution and variation of microcystin(MC) and physicochemical factors in Macun and Haidong bay of Dianchi Lake from April to December in 2003. The correlation of some physiochemical factors, including the concentration of total nitrogen, total phosphorous, dissolve oxygen, chlorophyll-a and Seechi depth, light intensity, pH, water temperature and dominance of Microcystis population, with microcystin was evaluated. Correlation analysis showed that the distribution of MC was significantly positive correlated with TN and N-P (P<0.01); and affected by Seechi depth, light intensity, dominance of Microcystis (P<0.05). Multiple continuously factors analysis indicated that the distribution of MC in water of the two bays was mainly afferled by total nitrogen,Seechi depth, chlorophyll-a, dissolve oxygen and total phosphorous (R2=0.560,P<0.017).
Key words:  Dianchi Lake  microcystin  correlation analysis
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