中文摘要：

根据2009年5月（春）、9月（夏）、12月（冬）3个航次对海州湾南部海域（34.60°～35.00°N,119.40°～119.90°E）的虾类资源调查资料,分析了该海域虾类的种类组成、优势种、生态类群、多样性及其季节变化等群落特征。结果表明海州湾南部海域虾类群落具有典型的近海暖温带特征,隶属黄海南部虾类区系,其中春季和冬季虾类暖温性显著,主要优势种有日本鼓虾（Alpheus japonicas）、葛氏长臂虾（Palaemon gravieri）及戴氏赤虾（Metapenaeopsis dalei）等,夏季暖水性特征相对增高,以刀额新对虾（Metapenaeus ensis）、细巧仿对虾（Parapenaeopsis tenella）及鹰爪虾（Trachypenaeus curvirostris）为优势种。3个季节共鉴定虾类19种,其中冬季种类数最多（18种）,同时生物量多样性指数（H′）最高,k-优势度曲线较平滑,具有较稳定的群落结构,而春季和夏季种类数较少（9种）,多样性亦较低。运用聚类和二维非度量标序对该海域虾类群落结构相似性进行分析,冬季群聚情况较明显,主要可划分为3个群聚类型,为近岸组、灌河口组及东面外侧组,该划分同环境背景间的一致性较好,具有一定的稳定性。

英文摘要：

Based on the data of shrimp resources sampled in the inshore waters in the southern Haizhou Bay（34.60°-35.00°N,119.40°-119.90°E） in May（spring）,September（summer） and December（winter）,2009,the shrimp species composition,dominant species,ecological groups,diversity,and seasonal variety of the community were analyzed.The results showed that the shrimp community here possessed typical inshore warm-temperate characteristics as part of the Southern Yellow Sea.With Alpheus japonicas,Palaemon gravieri,Metapenaeopsis dalei as major dominant species,the shrimp community in spring and winter had got remarkable warm-temperate characteristics,while in summer the warm-water characteristic was increased with Metapenaeus ensis,Parapenaeopsis tenella and Trachypenaeus curvirostris as dominant species.19 species of shrimps were identified in the survey,with 18,9 and 9 species in winter,spring and summer,respectively.In winter,the diversity index（H′） of biomass for shrimps was the highest,and its k-dominant curve went more smoothly,while the indexes were lower in spring and summer,which suggested the community structure in winter was more steady.With the CLUSTER and nMDS analysis,the division of shrimp communities in winter was relatively obvious,with three main assemblages,which were inshore assemblage,Guan Estuary assemblage and eastern outside assemblage.This division was relatively stable as the assemblages were in great conformity with the environment background.