【摘 要】
：
根据2008年7月22-26日和8月5-14日2个航次对黄海浒苔绿潮爆发区的调查数据,研究了调查海域营养盐的浓度变化和分布特征.结果表明,第2航次NH4-N的平均浓度为0.34 μmol/L,低于
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根据2008年7月22-26日和8月5-14日2个航次对黄海浒苔绿潮爆发区的调查数据,研究了调查海域营养盐的浓度变化和分布特征.结果表明,第2航次NH4-N的平均浓度为0.34 μmol/L,低于第J航次,第2航次NO3-N、PO4-P和SiO3-Si的平均浓度分别为4.63 μmol/L、0.39 μmol/L和6.76 μmol/L,高于第1航次,其中平均浓度变化最大的是PO4-P,其次是NH4-N.受陆地径流和苏北沿岸流的影响,调查海区的西南部足营养盐高值区,为绿潮爆发提供了一定基础.表层海水中NO3-N最高值出现在调查海区的西南部,底层海水中NO3-N最高值出现在调查海区的东部；PO4-P和SiO3-Si的分布特征与NO3-N相似:NH4-N表层分布呈现出高值和低值交替出现的特征,底层则呈现近岸高,远岸低的特征.
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