| 洞庭湖典型断面藻类组成及其与环境因子典范对应分析 |
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| 引用本文： | 汪星,郑丙辉,刘录三,李利强,黄代中,田琪.洞庭湖典型断面藻类组成及其与环境因子典范对应分析[J].农业环境科学学报,2012,31(5):995-1002. |
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| 作者姓名： | 汪星 郑丙辉 刘录三 李利强 黄代中 田琪 |
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| 作者单位： | 1. 中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012;中国环境科学研究院国家环境保护饮用水水源地保护重点实验室,北京100012
2. 洞庭湖生态环境监测中心,湖南岳阳,414000 |
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| 基金项目： | 流域水环境预警技术研究与三峡库区示范 |
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| 摘 要： | 2010年对洞庭湖6个典型断面进行了浮游藻类生物调查,共鉴定出7门72属(种),浮游藻类的密度范围在67.2×104～161.9×104cell·L-1;各典型断面间浮游藻类组成以硅藻和隐藻占优势,藻类群落结构存在着明显的差异。藻类Margalef指数及Shannon-Wienner指数范围分别为3.64～4.03和3.03～3.24,水体水质状况良好。应用CANOCO4.5软件对获得的浮游植物数据和环境因子数据进行典范相关分析(CCA),作出物种与环境因子关系的二维排序图。结果显示,典型断面藻类群落分布受水环境因子影响较为明显,整体上,DO和TN是影响洞庭湖典型断面藻类物种分布格局的主要因素。
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| 关 键 词： | 洞庭湖 藻类组成 环境因子 典范对应分析 |
Canonical Correspondence Analysis of Algae Composition and Its Environmental Factors of Typical Sections in Dongting Lake, China |
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| WANG Xing
,
ZHENG Bing-hui
,
LIU Lu-san
,
LI Li-qiang
,
HUANG Dai-zhong
,
TIAN Qi.Canonical Correspondence Analysis of Algae Composition and Its Environmental Factors of Typical Sections in Dongting Lake, China[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2012,31(5):995-1002. |
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| Authors: | WANG Xing ZHENG Bing-hui LIU Lu-san LI Li-qiang HUANG Dai-zhong TIAN Qi |
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| Institution: | 1.State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;2.State Environmental Protection Key Laboratory of Drink Water Resource Protection,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;3.Dongting Lake Eco-Environment Monitoring Centre,Yueyang 414000,China) |
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| Abstract: | This research was performed in 2010 at 6 sections of Dongting Lake,aiming to investigate the algal species.A total of 72 kinds of algal genera(species) belonging to 7 phyla were identified.The algae had an abundance ranging from 67.2×104 cells·L-1 to 161.9×104 and obviously different across the sampling sections in the three seasons,for example,Nanzui had the highest and Wanzi Lake had the lowest mean algal abundance across the 6 sampling sections.The algal community was dominated by Bacillariophyta and Cryptophyta,and significant difference was found on algal composition across 6 sampling sections.Overall,Margalef values varied from 3.64 to 4.03,while Shannon-Wienner varying from 3.03 to 3.24,both showing well water quality.Canonical correspondence analysis(CCA) was applied to explore the relationship between algal species and environmental parameters by CANOCO 4.5.The species-environment biplots were drawn based by the result of CCA.The result showed that dissolved oxygen(DO) and total nitrogen(TN) were the most important factors influencing the distribution of algal species across the 6 typical sections,for example,Cymbella sp.,Merismopedia sp.,Navicula sp.,Nitzschia sp.,and Gyrosigma sp.were chiefly influenced by DO,while Melosira sp.,Cyclotella sp.,Cryptomonas sp.,Euglena sp.,Peridinium sp.,and Stephanodiscus sp.were chiefly influenced by TN,and Ankistrodesmus sp.,Scenedesmus sp.and Synedra sp.were chiefly influenced by both DO and TN.Besides these,the other factors just like biochemical and chemical oxygen demand,total phosphorus(TP) and pH were also important to the algal species. |
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| Keywords: | Dongting Lake algae composition environmental factors canonical correspondence analysis(CCA) |
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