黑龙江呼兰河湿地藻类植物群落结构及分布特点

Algae community structure and distribution in Hulanhe Wetland,Heilongjiang Province

2009年5-10月期间对呼兰河湿地8个样点进行了5次藻类植物采样调查,经显微镜观察,共鉴定藻类植物158个分类单位,包括148种10变种,隶属于7门8纲14目23科50属.呼兰河湿地藻类群落组成以硅藻、绿藻为主,藻类植物的细胞密度变化范围在469.55×105-847.35×105 cells/L之间,不同采样点藻类植物种类组成及丰度的变化趋势不同.采样点Ⅱ藻类植物种类最多;采样点Ⅰ、Ⅴ藻类植物丰度较大.呼兰河湿地内出现的藻类多为普生性种类,但出现了一定的富营养化污染指示种类,结合Shannon-Wiener多样性指数H'、Pielou均匀度指数J评价结果初步推断,呼兰河湿地水域受到一定的污染.

Monthly algae samples in Hulanhe Wetland,Heilongjiang Province,were collected from May to October,2009.A total of 158 taxa,belonging to 7 phyla,8 classes,14 orders,23 families,50 genera,148 species and 10 varieties,were identified.The abundance of algae ranged from 469.55×105-847.35×105cells/L.They were predominantly Bacillariophyta and Chlorophyta.The composition and biomass of the algae varied with the studying periods.Most of the algae were found in the site II.While the biomass in sites I and V was greater than that of other sites.Results showed that most taxa were common species and several indicator species for eutrophication and pollution were also found.According to the assessments using saprobic indicator,Shannon-Wiener diversity index and Pielou evenness index,the water in Hulanhe Wetland was of different degrees of pollution.