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湖泊科学  2014 

2012年夏季三江平原湿地抚远地区浮游植物群落结构及多样性

DOI: 10.18307/2014.0514

Keywords: 三江平原湿地抚远地区,浮游植物,群落结构,多样性

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Abstract:

2012年6月(夏季)对三江平原湿地抚远地区水域的浮游植物进行调查,设置了10个采样点,经鉴定共有浮游植物262个分类单元,包括239种19变种4变型,隶属于7门9纲22目32科73属.通过对浮游植物群落结构的初步分析,得出三江平原湿地抚远地区水域浮游植物群落结构组成以绿藻门、硅藻门、裸藻门为主,种类数为绿藻门(42.6%)>硅藻门(22.8%)>裸藻门(20.9%),细胞密度在3.88×104~278.07×104cells/L之间.聚类分析结果显示,可以将10个采样点分为两组,即农场区5个样点为一组,非农场区5个样点为另一组,两大区域的浮游植物群落结构差异明显,水体类型及生态环境的不同是其存在差异的主要原因.浮游植物多样性指数相对较为一致,Shannon-Wiener多样性指数均在2左右,Margalef丰富度指数均大于3,Pielou均匀度指数在0.3~0.5之间.综合群落结构以及多样性分析表明,三江平原湿地抚远地区水域浮游植物物种丰富度较高,多样性良好.

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