中文摘要：

根据泉州湾2010年4个航次的现场调查资料,分析泉州湾表层海水中化学需氧量、无机氮、活性磷酸盐含量的季节变化特征,应用海湾富营养化评价模式对泉州湾海域海水富营养化状态进行评价,得出秋季和冬季富营养化指数（17.85和18.32）相对较高,夏季和春季富营养化指数（3.02和5.89）相对较低,与无机氮、活性磷酸盐含量的季节变化特征相似.根据近20 a泉州湾海域历史监测数据得出富营养化指数年际变化特征呈现先缓慢升高,后下降,最后又升高的趋势,与无机氮、活性磷酸盐的年均含量变化特征基本相似,近几年来富营养化指数（14.57）急剧增大,表明泉州湾海水富营养化程度非常严重.泉州湾海水富营养化指数平面分布特征总体上呈现由湾口向晋江入海口、后渚附近海域逐渐递增的趋势,与无机氮含量平面分布特征一致,与活性磷酸盐含量平面分布特征相似.

英文摘要：

Based on the data collected from 4 cruises in Quanzhou Bay in 2010,the seasonal variations of COD,DIN,PO4-P content and eutrophication index（E） were analyzed for the assessment of eutrophication conditions in the bay.The index E was higher in autumn and winter（17.85 and 18.32） than in summer and spring（3.02 and 5.89）,which is similar to the characters of the seasonal variations of DIN and PO4-P content.Based on the survey data obtained from recent 20 years in Quanzhou Bay,the index（E） increased slowly at first and then declined before it rose again,which is similar to the annual trend of DIN and PO4-P content.The increasing E（14.57） in recent years indicates that the seawater quality was in a state of deteriorating.The index（E） shows that it was higher in Jinjiang Estuary and at site of Houzhu than in the opening of Quanzhou Bay,which was consistent with the distribution of DIN and PO4-P.