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作 者 ：傅明珠,王宗灵*,孙萍,李艳,李瑞香

期 刊 ：生态学报 2009年 29卷 10期 页码：5366~5375

关键词：南黄海；叶绿素a；分布特征；叶绿素次表层最大值；潮汐锋；

Keywords:Southern Yellow Sea, chlorophyll a, distribution characteristics, subsurface chlorophyll maximum, tidal front,

摘 要 ：根据2006年夏季南黄海生态调查资料，分析了浮游植物现存量（叶绿素a）的空间分布特征及其主要环境调控机制。结果表明：南黄海浮游植物叶绿素a浓度范围为0.07~12.17 mg/m3，平均值为1.42 mg/m3；浮游植物叶绿素a平面分布呈近岸混合区高于外海层化区的特征，总体上随水体盐度和营养盐梯度的变化而变化，其中浅海陆架锋区对浮游植物有明显的聚集作用，垂直结构中层化区叶绿素次表层最大值现象明显，且最大值的深度和量值具有明显的区域差异；叶绿素a浓度与主要环境因子的相关性分析表明，在较大空间尺度上营养盐是浮游植物的主要调控因子，温度、光照和浮游动物摄食等也在一定空间和程度上对浮游植物的生长产生影响。

Abstract:We studied chlorophyll a distribution patterns and their relationship with important physico-chemical water properties based on the marine ecology investigation conducted in Southern Yellow Sea during the summer of 2006. The chlorophyll a concentration was in the range of 0.07-12.17 mg/m3 with a mean of 1.42 mg/m3. Spatial distribution of chlorophyll a generally reflected the variation gradients of salinity and nutrients, with high levels in the well mixed coastal zone and low levels in the stratified open sea region. Phytoplankton tended to be assembled near the tidal front area. Subsurface chlorophyll maximum was clearly observed and its depth was positively correlated with the transparency. Relationships between chlorophyll a concentration and the major environmental factors showed that nutrients availability was the dominant regulating factors of phytoplankton distribution at the large spatial scale, while temperature, light and zooplankton predation might also modulate the phytoplankton biomass in local regions.

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