【摘要】 用１９９１～１９９５年胶州湾１０个监测站的资料，采用Ｓｈａｎｎｏｎ－Ｗｅａｖｅｒ 指数、Ｐｉｅｌｏｕｓ均匀度指数、种的丰盛度指数以及Ｓａｎｄｅｒｓ稀疏曲线进行大型底 栖生物多样性比较。结果表明，在胶州湾，粉砂－粘土混合型的沉积环境中大型 底栖生物多样性高于匀质的粗砂底质。每年在湾内大量地捕捞菲律宾蛤仔 （Ｒｕｄｉｔａｐｅｓ ｐｈｉｌｉｐｐｉｎａｒｕｍ），对底栖生物多样性影响较大，在受影响区内夏季多样 性偏低，８０年代末过度捕捞菲律宾蛤仔也使受影响区多样性偏低。更多还原

【Abstract】 The diversity of macrobenthos was studied at 10 station in Jiaozhou Bay, with seasonally sampling in 1991 - 1995. Shannon - Weaver indices, Pielous evenness indices, Species richness and Sanders rarification indices were calculated. The results revealed that the diversity in sediment of silt -clay is higher than the homogeneous sediment of silt. The landing seine on Raditapes Philippinarum influenced the diversity greatly, and the diversity during summer is lower than normal in the affected area. At the end of 1980s, the overfishing on Raditapes Philippinarum led to lower diversity also.更多还原