文章应用单因子标准指数法、算术均值多因子指数法和营养状态指数法相结合的方法对当前考洲洋海域海水质量状况进行了评价,并依据考洲洋在潮汐涨、落情况下海水质量的变化,定量分析了考洲洋潮汐对其海水水质的影响.结果表明:磷酸盐、无机氮、石油类是影响考洲洋海域环境质量的主要因子,考洲洋内部海域均处于富营养化状态,总体水质状况为良好以下,潮水的涌入能改善考洲洋的水质状况,涨潮时期各航次的算术均值多因子指数之和比退潮时期平均降低了13.92％.且潮汐的变化对主要污染因子的影响顺序为:无机氮＞磷酸盐＞石油类,最后提出了考洲洋污染防治的对策和建议.%In this paper,single factor standard index,arithmetic mean multi-factor index and trophic state index methods were used to assess the water quality of Kaozhou Bay.According to the variation of marine water quality in Kaouzhou Bay under the conditions of tide rise and fall,influences of tide on the water quality was also quantitatively analyzed.The results showed that phosphate,inorganic nitrogen and petroleum oils were the main factors that affected the marine environmental quality of Kaozhou Bay.Inner water quality of Kaozhou Bay was in an eutrophication state and consequently not good on the whole,but the influx of tide could improve the water quality.The sum of arithmetic mean multi-factor index of voyages during the tide rise averagely decreased by 13.92％ compared to that during the tide fall.The influences of tide variation on the main pollution factors were ranked in a descending sequence of inorganic nitrogen first,followed by phosphate and petroleum oils thereafter.Finally,countermeasures and suggestions were put forward,for the pollution prevention and control of Kaozhou Bay.
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