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依据2010年11月秋季在龙口附近海域进行的海洋环境综合调查结果,应用水质标准指数法、富营养化指数法和有机污染综合指数法对该海域的海水水质现状进行了分析和评价,结合历史资料探讨了主要污染因子在近25年间的累年变化趋势。结果显示:该海域2010年11月表层海水中各评价要素基本符合海水水质二类标准,最主要的污染物为石油类;近25年间主要污染因子的变化趋势总体是增加的,但相对幅度不大;该海域整体的富营养化水平处于临界状态,正处于开始受到有机污染的阶段。
According to the comprehensive marine environment survey carried out in the waters near Longkou in the autumn of November 2010, the status quo of seawater quality in the sea area was analyzed and evaluated by using the water quality index method, eutrophication index method and organic pollution comprehensive index method, Data to explore the main pollution factors in the past 25 years of years of change. The results showed that the evaluation factors of surface seawater in November 2010 in this area were basically in line with the second class standard of seawater quality and the main pollutants were petroleum. The trend of the main pollution factors in the sea area increased generally in the past 25 years, but the relative magnitude was not Large; the overall eutrophication level of the sea area is in a critical state, and it is in the stage of being started with organic pollution.