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根据2006、2007、2008年5～10月份海洋环境监测航次调查的资料,分析了烟台四十里湾海域营养盐、COD、叶绿素a的分布特征、变化规律以及海湾的营养状况。结果表明,该海域营养盐随时间变化较为明显,磷酸盐秋季含量较高;叶绿素a最高值出现在9月份,COD整体变化不大;受人类活动和沿岸径流输入的影响,平面分布上营养盐、COD等的高值区出现在调查海域的东南部和西部。四十里湾海域无机氮浓度较高,N/P、Si/P值均大于Redfield比值,部分时节调查海域处于富营养化水平。
According to the survey data of marine environment monitoring voyage from May to October in 2006, 2007 and 2008, the distribution characteristics of nutrients, COD, chlorophyll a and the nutrient status in the Gulf of Yalu were analyzed. The results showed that nutrients in this area changed obviously with time, and the content of phosphate in autumn was higher. The highest value of chlorophyll a appeared in September, and the overall COD did not change much. Influenced by human activities and runoff input, , COD and other high value areas appear in the southeast and west of the survey area. The concentration of inorganic nitrogen in Sishili Bay was higher than that of Redfield. The N / P and Si / P values were all higher than those of Redfield. The eutrophication level was found in some seasons.