易贡藏布江浮游生物调查及多样性分析

Survey and Diversity Analysis of Plankton in the Yigongzangbu River

我们对易贡藏布江流域进行浮游生物调查及多样性分析,结果表明本流域内浮游植物共有4门60种,其中硅藻门和绿藻门种类为46种和11种,分别占到76.67%和18.33%。浮游植物多样性指数、均匀度指数范围分别在3.19~3.62、0.93~0.97之间波动;浮游动物有3门23种,其中原生动物门20种,占浮游动物种类的86.96%;浮游动物多样性指数、均匀度指数范围分别在2.34~2.97、0.83~0.98之间波动,研究结果为本地区水生生物资源积累了本底资料。

We have surveyed the plankton in Yigongzangbu River and analyzed their diversity. The results showed that total 60 species of the phytoplankton belonging to four families were found in this survey, the species of Bocillarrophyta and Chlorophyta have 46 and 11, accounting for 76.67% and 18.23%, respectively. The ranges of diversity index and evenness index of phytoplankton were from 3.19 to 3.62 and from 0.93 to 0.97. 23 species of Zooplankton belong to three families, that including 20 species of the Protozoa, accounting for 86.96%. The ranges about diversity index and evenness index of Zooplankton were from 2.34 to 2.97 and from 0.83 to 0.98.Accordingly this activity might provide background information for the study of aquatic resources in future.