【摘要】 2005年开展了外来生物米草入侵对黄河三角洲盐沼生物群落影响的系统研究,结果表明:(1)与1980年调查资料相比,米草分布区浮游植物种群组成发生变化,细胞总量明显高于1980年,但多样性降低。(2)浮游动物种群组成发生显著变化,个体数量、多样度降低。(3)米草分布区底栖动物种数少于对照区,且小型螺类丰度高,蛤类、蟹类丰度低,优势类群的相对多度有显著差异,岔尖、小清河口平均密度高于对照区,小清河口多样度高于对照区。米草入侵已对黄河三角洲盐沼生物群落产生了一定的影响。更多还原

【Abstract】 The influence of Spartina spp.on saltmarsh community of Yellow River delta was evaluated from 2005 to 2007.Results showed that Compared with the information in 1980,the composition of phytoplankton community changed and the amount of phytoplankton cell significantly increased,but diversity of phytoplankton significantly decreased.The composition of zooplankton community also changed and its number of individuals and diversity decreased.The species of zoobenthos in Spartina distribution area were less than the control,and the abundance of small snails was higher,the abundance of clams,crabs was lower,the relative abundance of dominant species was significantly different,the average density of Chajian and Xiaoqing River estuary were higher than the control clear District,the diversity index of Xiaoqing River estuary was higher than the control.In a word,the invasion of Spartina spp.had a certain effects on community of Yellow River delta.更多还原