椒南化工区排污口附近海域的底栖生物状况

利用2002年6～7月椒南化工区排污口附近海域生态调查资料,对该海域底栖生物的种类组成、数量分布及其生态群落多样性等进行了分析和研究,结果表明:(1)该海域底栖生物种类贫乏,多毛类Polychaeta、海地瓜Acaudinamolpadioidea及纵肋织纹螺Nassariusvari-ciferus等耐污种类为优势种;(2)该海域底栖生物生物量较低,且局部海域出现了无底栖生物现象;(3)该海域底栖生物多样性指数低、丰富度低、优势度大,表明底栖生物的生态环境已受到严重污染。

Study of the situation of benthos in the sea area around the sewage outfall of Jiaonan chemical industry area

Based upon the ecological investigation data from June 2002 to July 2002 on the specific composition, the distribution of quantities and the diversity of ecological community of benthos in the sea area around the sewage outfall of Jiaonan chemical industry area are analysed. The results show that the species of benthos is poor and some species, such as Polychaeta, Acaudina molpadioidea, Nassarius variciferus etc., become the dominant species in this sea area; the biomass of benthos is lower and a phenomenon without benthoes species appeares in part sea area. It is also shown that not only both the diversity index and abundance are low but also the dominance of bethoes were great, indicating that the ecological environment of benthoes in the investigation sea area is polluted.