黄海北部沿岸水域营养水平及有机污染状况分析

ANALYSES OF THE NUTRIENT LEVEL AND ORGANIC POLLUTION STATE OF ALONGSHORE WATERS IN THE NORTHERN YELLOW SEA

主要根据1997年6月和8月对黄海北部沿岸对虾增殖放流调查，从营养水平和有机污染的角度，分析了黄海北部沿岸水域营养水平及有机污染状况。结果表明，营养盐含量具有明显的季节变化，并呈沿岸河口水域高于其他水域分布趋势。6月的营养盐含量水平接近海水一类标准，富营养化程度和有机污染不明显，基本属正常水平。而8月的营养盐含量大部分测站均有不同程度地超过海水一、二类标准值，由计算的富营养化判断值（E）和有机污染指数（A），可认为8月该水域开始受到有机污染和接近富营养化类型。

This paper reports results of a June and August, 1997 survey of the nutrients level and organic pollution state of northern Yellow Sea alongshore waters. The survey showed that the nutrients concentration there had obvious seasonal variation that nutrients concentration in estuarine waters was higher than that in other alongshore waters, which were barically normal and without obvious eutroplaicalecn and organic pollrtion; and that nutrients concentration in alongshore waters was that of first-class standard seawater. But in a large number of stuting the August nutrients ancentration exceeded somewhat that for first-class and second-class standard seawater the entroplic state at these stations was probably due to the August in put of organic pollutants.