PURIFICATION OF DIANCHI LAKE BY RADICAL SUBMERGED HYDROPHYTE (POT AMOGETON CRISPUS)
根生沉水植物菹草(Potamogeton crispus)对滇池水体的净化作用

The results of a study on the purification of nutrient and heavy metal polluted Dianchi Lake using radical submerged hydrophyte (Potamogeton cri-spus) showed that the P. crispus could absorb and accumulate P,N,Pb,Zn, Cu,and As from both water and mud in large amount. Its absorption coefficients for N,P,Pb,Cu from mud were found to be higher that floating E. crassipes and the maximum biomass and purification efficiency were observed at 50% coverage.