连云港近岸海域底栖动物群落组成及多样性特征

在2005年秋对连云港的大型碱厂近海、港区近海和核电站近海的底栖动物进行取样调查，对比研究了不同强干扰环境下底栖动物群落组成及多样性特征， 分析了调查海域环境污染状况.研究表明： 多毛类和软体动物在三个海域中都为优势种类，分别占42.703%，51.352%，56.03%和46.085%，38.145%，32.034%；Shannon-Wiener 指数和均匀度指数的平均值均属核电站海域最大， 分别为3.184和0.868，最小为碱厂海域；丰富度指数的平均值属港区海域最大，为1.416，最小仍为碱厂海域；底栖动物栖息密度值与沉积物中值粒径之间大致呈相反关系；三个海域的28个调查站位中，JC01站底栖动物群落结构受到干扰稍大.

Community structure and biodiversity characteristics of macrobenthos off coast of Lianyungang(Chinese)

This article studied the community composition and biodiversity characteristics of macrobenthos under the intense environmental disturbances and analyzed the pollution status of sampling stations in three areas of Alkaline Factory, Port region and Nuclear Power Station off the coast of Lianyungang. The result shows that polychaete and mollusk are the dominant species which are 42. 703%,51.352%,56.03% and 46.085%,38. 145%,32.034% of the total individual numbers, respectively in the three areas. The average value of Shannon-Wiener and evenness index in the region of Nuclear Power Station are the biggest which are 3. 184 and 0. 868, respectively, and the values in the Alkaline Factory are the smallest. The biggest average value of richness index is in the Port region which is 1. 416, and the smallest value is in the Alkaline Factory. There is a approximate inverse relation between macrobenthos richness index and median grain size.