Water quality pollution characteristics in East Taihu Lake
Water quality pollution characteristics in East Taihu Lake
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Ma Zhi-gang
中科院分区：
文献类型：
--
作者：
Ma Zhi-gang
在对东太湖水环境进行系统研究的基础上，采用主成分分析和聚类分析方法对东太湖水质空间分区和主要水污染特征进行了分析。结果表明，东太湖水质特征具有明显的空间格局和明显的季节变化。从12项水质指标中提取了2个主成分，并对其进行了分析。组分I由总磷、总溶解磷和无机磷浓度表征，组分II与代表东太湖水体有机污染的Chla和CODMn相关。根据主成分得分，将12个样地划分为4类。由于城市生活污水的排放，东太湖北部河口的水质污染严重，尤以油车港口污染最为严重。由于人工种植的植被具有很强的净化能力，围养蟹养殖区的水质与东太湖南部和东部相当。
Principal component analysis and cluster analysis were used to analyze the spatial zoning of water quality and the main water pollution characteristics in East Taihu Lake based on a systematic water environment research.The results showed that there existed a significant spatial pattern and obvious seasonal variations in water quality characteristics among the sites selected in East Taihu Lake.Two main components were obtained from twelve water quality indices,and component I was characterized by total phosphorus total dissolved phosphorus and inorganic phosphate concentration.Components II was associated with Chla and CODMn which represented water organic pollution in East Taihu Lake.Twelve sample plots were classified into four classes by cluster analysis in terms of principal component scores.The water pollution was highly in the river mouths of the north part of East Taihu Lake due to the discharge of urban domestic sewage,especially in the Youchegang mouth.The water quality in the crab's enclosure culture area was as good as the sites in the south and east parts in East Taihu Lake because of the artificial grown vegetation's strong purification ability.