摘要
对复州河流域内蔡房身大桥、东风水库出口、橡胶坝、复州湾大桥、杏树园、沙陀桥、三台子干流;九道河、岚崮河、珍珠河、太阳河、回头河、大庞屯支流共计13 个重点断面布设监测点位进行采样监测,选取CODCr、CODMn、NH3-N和TP4 个指标进行水质标识指数法评价,选取CODMn、TP、NH3-N、TN、Cl-、SO42-、NO3-N、NO2-N,Mg2+、K+、Na+11个指标进行主成分分析法评价.研究结果显示:东风水库出口和三台子断面水质最好,回头河上游断面和大庞屯断面、珍珠河断面水质最差,对水质贡献程度最大的是有机物和氮磷污染.主成分分析与水质标识指数法评价结果均客观可靠,两种评价方法互补可更全面评价水质情况.
Abstract
For the main stream within the Fuzhou River Basin,Caifangshen Bridge,Dongfeng Reservoir outlet,Xiangjiao dam,Fuzhou Bay Bridge,Xingshuyuan,Shatuo Bridge,and Santaizi and the tributaries of Jiudao River,Langu River,Zhenz-hu River,Taiyang River,Huitou River,and Dapangtun,thirteen key monitoring points were set up for sampling and monito-ring.Four indicators,CODCr,CODMn,NH3-N and TP,were selected for water quality identification index evaluation,and 11 indicators,including CODMn,TP,NH3-N,TN,Cl-,SO42-,NO3-N,NO2-N,Mg2+,K+,Na+were selected for principal component analysis evaluation.The research results show that the water quality at the outlet of Dongfeng Reservoir and Santaizi section is the best,while the water quality at the upstream section of Huitou River,Dapangtun section,and Zhenzhu River section is the worst.The biggest contributors to water quality are organic matter and nitrogen phosphorus pollution.The evalu-ation results of principal component analysis and water quality identification index method are relatively objective and reliable,and the two evaluation methods can complement each other to comprehensively evaluate the water quality situation.
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