辽东湾浮游植物多样性及与海洋环境因子的关系

Phytoplankton diversity of Liaodong Bay and relationship with ocean environmental factors

以2005年7～9月份辽东湾浮游植物的调查数据为主，结合以往的调查数据对浮游植物的种群结构、分布特征、多样性指数的变化及其与海洋环境因子的关系进行了分析。结果表明，浮游植物个体数量高值区主要集中在北部海区，而其生物多样性与均匀度指数却明显低于西部和东南部海区，说明该海区水体、生态环境、生物群落不如西部和东南部海区稳定、成熟。浮游植物多样性主要受水温、盐度、COD、生物量、物种数等环境因子的制约。

Based on the data of surface phytoplankton investigated in the north waters of Liaodong Bay in 2005, this paper analyzed the composing, distribution, diversity index of surface phytoplankton and the relationship between them and the environment factor. The results indicated that the phytoplankton in the Liaodong Bay centralized in the north sea area, the index of diversity and equality in the north were lower than west and southeast . This indicated that the water,environment and biology community in the north were not steady. The phytoplankton diversity was restricted by environment factor such as water temperature, salinity,COD,biomass, species.,