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根据2011年冬季在海州湾及邻近海域进行的渔业资源底拖网和环境调查数据,应用物种多样性指数和多元分析等方法,对该海域鱼类种类组成、多样性和群落结构及其与环境因子的关系进行了研究.结果表明:该海域冬季捕获鱼类共60种,隶属于10目34科51属,以暖温性和暖水性底层鱼类为主.站位间物种丰富度指数介于1.14～2.84,多样性指数介于1.08～2.64,均匀度指数介于0.41～0.83之间.经聚类分析和非度量多维标度(MDS)分析,该海域鱼类群落在空间上可分为站位组Ⅰ(35°N以北水域站位)、站位组Ⅱ(靠近湾顶的近岸水域站位)和站位组Ⅲ(35°N以南水域站位).鱼类群落种类组成在站位组间及两两间的比较均差异极显著(R=0.45～0.91).典范对应分析表明,底层水温、水深和表层盐度是影响海州湾及邻近海域冬季鱼类群落结构的主要环境因子.
Based on the bottom trawl and environmental survey data of fishery resources in Haizhou Bay and its adjacent waters during the winter of 2011, the species composition, diversity and community structure of fish species in the sea area and its relationship with the environment were analyzed using the methods of species diversity index and multivariate analysis. The results showed that there were 60 species of fish caught in winter, belonging to 10 genera, 34 families and 51 genera, with warm-temperate and warm-water underlying fish as main species.The index of species richness From 1.14 to 2.84, the diversity index ranged from 1.08 to 2.64, and the evenness index ranged from 0.41 to 0.83.According to cluster analysis and MDS analysis, the fish community in this area was spatially separable Is station group I (station north of 35 ° N), station station II (station of nearshore near bay top) and station station III (station south of 35 ° N) The differences of species composition among stations and between two groups showed significant differences (R = 0.45-0.91) .Analysis of canonical correspondence showed that the temperature, water depth and surface salinity of bottom water affected the winter fish community in Haizhou Bay and its adjacent sea areas The main environmental factor of the structure.