The average biomass of zoo-plankton is 1. 10 mg/1, in which the copepoda presented 30. 9%, the cladocera - 24. 5%. The rotifera and protozoa are 26.4%. and 18.2%, respectively.

• 浮游动物生物量平均1.；10mg·L~(-1)；其中桡足类占30