Application of Phytoplankton Community and Trophic Index in the Evaluation of dredging bed mud of Southern Area of the Tai Lake
应用浮游植物群落结构及富营养化指数评价南太湖底泥疏浚效果

The ecological effect of dredging bed mud of southern area of the Tai Lake was assessed using phytoplankton community and trophic index.The result was indicated that the kind of phytoplankton was increased,while the density,biomass and the rate of Cyanobacteria were decreased obviously after dredge.The change of Shannon-Weaver index and TSIM index was indicated the dredging bed mud was helpful to trophic status of southern area of the Tai Lake.