索风营水电站原生动物群落多样性与水质关系评价

A study of the relations between the protozoan community diversity and the water quality in the hydro-power station of Suofengying

原生动物,在水生生态系统的生态过程中发挥着重要的作用,其种群动态、群落结构变化直接或间接反映着水体水质的状况和发展趋势。原生动物种类和数量随着水体的污染程度变化而消长。索风营库区的监测,原生动物的种类数为21种,平均数量为29 25ind./L,平均生物量为1 463×10-3mg/L。生物多样性指数d值为5 9,水质较好。比较3个采样点,龙滩和素风水质好于水文站水质。

The protozoan plays an important role in eco-procedure of aquatic ecosystem. The change of population and community will directly or indirectly reflect condition and development trend of water quality. With the change of water quality,the protozoan species will change. In Suofengying,there are 21 protozoan species. The average number is 29.25ind./L and the average biomass is 1463×10-3mg/L.The biodiversity index(d)equals to 59,which indicates that Suofengying possess a better water quality. Water quality in Longtan and Sufeng is better than that of hydrometric station.