2009年春季采用地笼网分别对山东省西港小石岛、牟平养马岛、威海寻山和日照前三岛附近人工鱼礁区及对照区的鱼类资源进行调查。结果表明,人工鱼礁区的鱼类种类数比对照区增加了1.8倍,平均数量和平均质量分别比对照区增加了3.5倍和1.9倍。人工鱼礁区的主要优势种为岩礁性鱼类大泷六线鱼和许氏平鲉。人工鱼礁区鱼类资源的物种丰富度指数、物种多样性指数和物种均匀度指数的均值分别大于对照区相应生态指数数值。人工鱼礁的建设可以增加鱼类资源的种类、数量及鱼类群落的丰富度和多样性。
Fish resource composition,quantity and quality were investigated in artificial reef areas and control areas in Xiaoshi Island of Xigang,Yangma Island,Xunshan and Qiansan Island in Shandong province to evaluate the effect of artificial reefs on fish multiplication in spring of 2009.The results showed that the fish resources in the artificial reef areas had been significantly improved.There were 1.8 times higher number of fish species(dominant reef fish species including fat greenling Hexagrammos otakii and rockfish Sebastes schlegeli),3.5 times higher average number,and 1.9 times higher average body weight in the artificial reef area than those in the control area.The mean value of species richness index D was 1.11,species diversity index H′1.10 and 0.77 species evenness index J′in the artificial reefs,which were all increased compared with those in the control area,indicating that the fish resources and richness and diversity of fish communities in the artificial reef areas were significantly improved.