青堆子湾滩涂围垦对大型底栖动物的影响

为了研究滩涂围垦对近岸大型底栖动物群落结构的影响，于2011~2012年在青堆子海湾布设了16个监测站位，开展了4个季节的调查工作。运用ABC曲线、聚类分析（CLA），重点分析了滩涂围垦对大型底栖生物分布的影响。结果表明:（1）近岸大型底栖动物群落结构受扰动明显，与历史数据对比，物种数、栖息密度、生物量下降明显，经济物种损失严重；（2）近岸大型底栖动物种数、栖息密度、生物量明显低于远岸；（3）ABC曲线、聚类分析结果表明，调查海域大型底栖生物群落受干扰程度明显，群落结构相似性程度较低，滩涂围垦导致近岸沉积环境形成了多个不同类型的小生境。

Influence of reclamation on off-shore macrobenthic community in the Qingduizi bay

The macrobenthic community structure was investigated in 16 monitoring stations in an enclosed tideland for cultivation in Qingduizi bay in spring, summer, autumn and winter of 2011-2012 in order to evaluate the effect of reclamation on the nearshore macrobenthoc community structure by ABC curve and Cluster Analysis(CLA). It was found that the offshore macrobenthoc community structure was disturbed obviously, with significant decrease in species number, and density and biomass in the habitat, especially the economically imporant species compared with previous data. There was significantly lower macrobenthoc species number, and habitat density, and biomass in nearshore than in far shore. ABC curve and CLA analysis revealed that the more degree of disturbance and lower similarity degree of macrobenthoc community were observed in the surveyed areas, indicating that the reclamation leads to form a number of different types of habitats offshore sedimentary environment.