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| 喻家湖水质时空分布特征和影响因子分析 |
| Identification of Spatio-temporal Distribution Characteristics and Its Influencing Factors of Water Quality on Yujia Lake |
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| DOI： |
| 中文关键词: 水质 时空分布 多元统计分析 地理信息系统 喻家湖 |
| 英文关键词: Water quality Spatio-temporal distribution Multivariate statistical analysis GIS Yujia Lake |
| 基金项目:华中科技大学自主创新基金资助项目（2010 zz 004-05） |
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| 摘要点击次数: 1824 |
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| 中文摘要: |
| 通过设计合理的水质监测网，采用多元统计分析，并结合地理信息技术对武汉市喻家湖在2011年—2012年期间12个监测点、13个水质参数监测值进行水质时空分布特征研究。结果表明，喻家湖13个水质指标概括为4个主成分:第一主成分代表喻家湖的重金属污染，第二主成分代表其富营养化水平，第三主成分代表有机污染程度，第四主成分间接指示富营养化程度；在时间和空间变化上都可分为二组，显著性指标的时空差异较明显，水质污染程度从南至北逐渐减弱，湖溪河是喻家湖的最主要污染源。并对水质参数，监测点位和频次进行了优化。 |
| 英文摘要: |
| Combined with a rational water quality monitoring program，Multivariate Statistical Analysis and geographic information system(GIS) were used to analyze data sets of water quality for 11 parameters monitored at 12 different sites in Yujia Lake from 2011 to 2012 to determine temporal and spatial distribution characteristics in water quality.The results demonstrated that:the significance of the four principal components was verified,the first varifactor(VF1) represented the pollution of heavy metals in Yujia Lake,the second varifactor(VF2) indicated the level of eutrophication，the third varifactor(VF3) represented the organic pollution，the fourth varifactor(VF4) indicated indirectly the level of eutrophication;the monitoring periods were classified into 2 clusters and the monitoring sites were partitioned into 2 groups,the temporal and spatial variations were significant.The water pollution levels became gradually weaker from south to north,Huxi River was the most important source of pollution.The frequency and sites for the monitoring of water quality parameters were optimized properly. |
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