长江河上游浮游生物群落结构与水质评价.

In order to understand the structure of the plankton community, evaluate the water ecological environment quality, the physical and chemical properties of the water body and the status of the plankton community of 15 sampling sites in typical sections of upper Changjiang River in September 2021 were investigated, the composition of the plankton community structure was analyzed and the water quality status of the basin was evaluated. The result showed that 68 species of phytoplankton were detected in upper Changjiang River, belonging to 43 genera and 6 phyla. There were 15 species of zooplankton, including 12 species of Rotifera, 2 species of Cladocera and I species of Copepoda. Based on the physical and chemical parameters of water quality and plankton biological evaluation, the overall water quality of upper Changjiang River was in class II-III, which was in the state of medium pollution [ABSTRACT FROM AUTHOR]