贴沙河浮游植物群落结构特征

目的]了解贴沙河浮游植物群落结构特征及其变化规律。方法]2009年,按月对贴沙河进行了浮游植物群落结构调查。结果]全年共检出浮游植物8门82种,以硅藻门、绿藻门种类为主,分别占41.46%、35.37%;浮游植物密度变化为0.40×104～2.33×106ind./L,以2月最低,7月最高,年均值为7.80×105ind./L;浮游植物Shannon-Wiener多样性指数超过2。结论]该研究结果为贴沙河生态研究提供基础数据资料,为水源区水质生物监测评价提供科学依据。

Community Characteristics of Phytoplankton in Tiesha River

Objective] To understand the community characteristics and variation rules of phytoplankton in Tiesha River.Method] phytoplankton community structure of Tiesha River was investigated by conventional method of biology month to month in 2009.Result] A total of 82 species and 8 divisions were identified in Tiesha River,and the most dominant algaes were Bacillariophyta and Chlorophyta with a ratio of 41.46% and 35.37%,respectively.The density of phytoplankton ranged from 0.40×104 to 2.33×104 ind./L.During the investigation period,the highest density appeared in July and the lowest appeared in February.The average density of phytoplankton was 7.80×105 ind./L.Shannon-Wiener diversity index of phytoplankton is more than 2.Conclusion] The results of this study would provide basic data for the further ecological research of Tiesha River,and a scientific basis for monitoring and evaluating water quality of the water source area.