广西英罗港红树林沼泽沉积物和大型底栖动物中重金属含量的研究

１９９４年测定了广西英罗港红树林区沼泽沉积物和大型底栖动物中重金属Ｃｕ、Ｐｂ、Ｚｎ和Ｃｄ的含量。结果表明：沉积物重金属含量比潮沟的高；沉积物中的重金属含量与有机质含量存在显著正相关关系；英罗港红树林区部分沉积物己受到Ｃｄ和Ｐｂ的污染。各类动物重金属平均含量Ｚｎ和Ｃｄ以软体动物，Ｃｕ以甲壳动物，Ｐｂ以星虫类最高。在动物总体水平上，林内动物重金属含量稍高于潮沟动物。在种类和动物类别水平上则无明显差别。各潮带动物重金属含量规律混乱。少数大型底栖动物受到Ｃｄ或Ｐｂ的污染。

A Study on the Contents of the Heavy Metals in the Sediments and Macrobenthos of Yingluo Mangrove Swamps,Guangxi

The contents of the heavy metals of Cu,Pb,Zn and Cd in the mangrove sediments and macrobenthos were monitoried in Yingluo Bay,Guangxi provence in 1994;It showed that the metal contents in the sediments were higher than in the creek under forest,and positively correlated with the contents of the organic matter in the sediments.Some of the sediments in Yingluo Bay have been polluted by Cd and Pb.The highest contents of the heavy metals were Zn and Cd for the mollusca,Cu for the crustacea and Pb for the sipunculida.As is in a position at the middle of the all species.The metal contents in the macrobenthos were slightly higher under forest than in the creek.However,the marked difference was not found based on the means of the individual species and species categories.The variations of the metal contents in the macrobenthos were not regular in the tidal zones.Only a few of the species macrobenthos were polluted by Cd or Pb.