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依据2010年春季(4月)和秋季(10月)椒江口海域渔业资源调查资料,分析了虾类的种类组成、优势度、物种数量的空间分布及多样性、相似性等群落结构特征,并对其影响因素进行探讨.结果表明:椒江口海域春秋两季共出现虾类16种,隶属于8科12属,其中春季14种,秋季12种;春季优势种有中国毛虾、鲜明鼓虾、哈氏仿对虾、细螯虾、日本鼓虾、葛氏长臂虾6种,秋季优势种依次为中华管鞭虾、哈氏仿对虾、周氏新对虾3种.椒江口海域虾类以广温广盐生态类群为主,其次为广温低盐生态类群.多样性分析表明,Margalef种类丰富度指数和Shannon多样性指数较高的站位主要集中在大陈岛西侧海域,整个调查海域的均匀性指数较为稳定.运用聚类和多维标度对群落结构的相似性进行分析,结合水深等环境因子对椒江口虾类的群聚类型进行了讨论,椒江口虾类群落结构的季节变化明显、空间分异显著,水深是导致椒江口海域春秋季虾类群落结构组成差异的主要原因.
Based on the survey data of fishery resources in the Jiaojiang Estuary in spring (April) and autumn (October) of 2010, the species composition, dominance, the spatial distribution of species number and the community structure characteristics of diversity and similarity were analyzed. The results showed that there were 16 species of shrimp in the spring and autumn of Jiaojiang Estuary, belonging to 12 genera and 8 families, of which 14 were in spring and 12 in autumn. The dominant species in spring were Chinese shrimp, , Haste prawn, crayfish, Drum shrimp, Gorgon arm shrimp 6 kinds, the autumn dominant species were Chinese pipe whip shrimp, imitation shrimp, shrimp new week shrimp 3. Jiaojiang estuary shrimp to The results showed that the stations with higher Margalef species richness index and Shannon diversity index were mainly concentrated in the west coast of Dachen Island. The whole survey The homogeneity index of sea area is relatively stable.The clustering and multidimensional scaling are used to analyze the similarity of community structure and to discuss the clustering types of shrimp in Jiaojiang estuary according to the environmental factors such as depth of water etc. The shrimp community structure season Change significantly, empty Significant differentiation, depth of water is the main cause of community structure in spring and autumn shrimp Jiaojiang estuary of compositional differences.