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中文摘要：
本文以我国典型河口-长江口及邻近海域为研究对象,依据长江口及其邻近海域的污染现状,参考现有海水营养等级标准值,制定近海富营养化4级等级划分标准,并以此为基础建立了＂致害因素—效应＂框架下的多参数综合评价方法—基于集对分析理论的二级模糊评价方法（SPA-NS）。对2002年5月份长江口及邻近海域的海水富营养状况进行的评价结果表明,SPA-NS模式能够比较全面地反映海水富营养化＂致害因素-效应＂,相对于富营养状态指数法（EI）、营养状态指数法（NQI）评价结果而言,更加突出了海水的富营养化症状对海水富营养化的贡献。
英文摘要：
In this paper,a new index and grade standard of comprehensive eutrophication assessment of seawater was established by integrating the seawater characteristics of Yangtze River Estuary and its Adjacent area and current grade standard of marine water.Furthermore,a new eutrophication assessment method based on press-state indictors frameworks was developed using two-grade set pair analysis method.An applied example was studied in Yangtze River Estuary and its Adjacent area in May 2002 with more satisfactory results.Compared with EI and NQI,this method was perfect in describing the effects of some eutrophication symptom characteristics on the trophic state evaluation of marine water.
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