| 太湖出入湖河流水质多元统计分析 |
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| 引用本文： | 余辉,燕姝雯,徐军.太湖出入湖河流水质多元统计分析[J].长江流域资源与环境,2010,19(6):696. |
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| 作者姓名： | 余辉 燕姝雯 徐军 |
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| 作者单位： | 中国环境科学研究院湖泊生态环境创新基地,北京,100012;中国科学院水生生物研究所东湖湖泊生态系统试验站,湖北,武汉,430072 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项;水体污染控制与治理科技重大专项 |
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| 摘 要： | 应用多元统计方法分析了太湖53条出入湖河流出入湖断面的水质监测指标。系统聚类分析方法将出入湖河流分为污染程度由高到低的3类，与太湖流域污染空间分布现状基本一致。因子分析表明：就全部监测河流来说影响河流水质的主导因素是氮，磷次之。I类河流首先是氮污染为主导因素，有机物污染次之；II类河流是以氮污染为主导因素，磷污染次之；III类河流首先受到有机污染和磷污染控制，其次受到氮污染的影响。
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| 关 键 词： | 太湖 河流 水质 多元统计分析 |
MULTIVARIATE STATISTICAL ANALYSIS OF WATER QUALITY IN THE INFLOW AND OUTFLOW RIVERS OF LAKE TAIHU |
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| Institution: | (1.Research Center of Lake Environment| Chinese Academy of Environmental Science| Beijing 100012| China；;
2.Donghu Experimental Station of Lake Ecosystems| Institute of Hydrobiology| Chinese Academy of Sciences| Wuhan 430072| China)〖 |
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| Abstract: | In this study，multiple statistical methods were conducted to evaluate water quality in the inflow and outflow rivers of Lake Taihu，China.Hierachical cluster analysis indicated that the inflow and outflow rivers of Lake Taihu can be classified into three categories according to their water quality.Principal component analysis，which is used to identify the possible factors or/and sources that determine river water quality，indicated that water quality of these rivers was generally determined in nutrient order of nitrogen and phosphorus levels.Principal component analysis also indicated that water quality of Category I rivers was mainly determined in nutrient order of nitrogen and phosphorus，that water quality of Category II rivers was mainly determined in order of nitrogen and organic matter levels，and that water quality of Category III rivers was mainly determined in order of phosphorus，organic matter and nitrogen levels.〖 |
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