中文摘要：

2011年10月对灌河口及其入海河段中潮带进行了11个站位的大型底栖动物调查,共发现大型底栖动物10种,均为软体动物。潮间带优势种为光滑河篮蛤（Potamocorbula laevis）,总平均丰度为92个/m2,总平均生物量为20.9 g/m2;入海河段优势种为中华拟蟹守螺（Cerithidea sinensis）,总平均丰度为180个/m2,总平均生物量为52.5 g/m2。与邻近海域相比,大型底栖动物物种数、丰度、H’等都较低。相关性分析表明有机污染物敌敌畏、OCPs、SVOCs和重金属镉、汞、锌和总铬的浓度对生物量、丰度和H’有着显著或较大影响。研究表明,灌河沿岸4个化学工业园的排污及沿岸码头建设等对该海域产生了较大的人为扰动,已不适宜部分大型底栖动物的生存,需进行跟踪调查监测及时制定该海域生态保护、修复规划。

英文摘要：

The macrobenthos community at 11 sampling stations in the intertidal zone and near sea section of Guan River was investigated in October 2011. A total of 10 species were identified and all of them belong to Mollusca. In Guan River Estuary intertidal zone, the dominant species was Potamocorbula laevis, with an average abundance of 92 ind./m2, and an average biomass of 20.9 g/m2. In the near sea section, the dominant species was Cerithidea sinensis, with an average abundance of 180 ind. /m2, and an average biomass of 52.5 g/m2. Compared with previous studies, the abundance, biomass and Shannon-Wiener index of macrobenthos were lower than the adjacent area. Correlation analysis showed that the concentrations of dichlorvos, OCPs, SVOCs, Cd, Hg, Zn and Total Cr had a significant impact on biomass, abundance and H ’ of the macrobenthic assemblages. The results showed that the construction of wharf and the sewage of four Chemical Industry Park had a great artificial disturbance on the sea. It was concluded that the surrounding environment of this area is no longer suitable for the survival of some macrobenthic species. We need to carry out further survey on this area and develop ecological protection measures and restoration plans. This paper provides basic data for ecological study of Guan River Estuary.