【Objective】Analyze the species,density,biomass,diversity and other community characteristics of plankton in combination with the assess of dominant plankton and water quality physical and chemical indicators to evaluate the water quality of Juyan Lake.【Methods】From November 2020 to September 2021,13 physical and chemical indicators of water quality as well as plankton resources in the Juyan Lake were sampled and analyzed in accordance with Handbook of Fishery Natural Resources Investigation in Inland Waters and Technical Specification for F...