In order to clarify the response mechanism of different wetland plant combinations to high concentrations of nitrogen and phosphorus,three types wetland plants were selected and assigned into three combinations(A,B and C)with certain landscape ef-fects,monitoried the growth of the plants and their removal effect and the warer quality of DO,pH and EC.The results showed that the plant combination had better removal effect on total nitrogen in water,the removal rate of TN from water by plant combination was 68％-93％.The TP removal rate was more than 44％-64％.The best nitrogen removal rate of combination C was 93.2％,and the maximum phosphorus removal rate of combination A was 64.73％.In terms of TN removal,combinations B,C and CK were signifi-cantly removed(P＜0.05).In terms of TP removal,there was no significant difference between CK and other plant communities.In terms of physical indexes,there were significant differences in pH between cultivated plant water samples and CK water samples(P＜0.05).The DO in combination A,B and CK water samples had significant differences respectively.There was no significant difference in EC values between all combinations and CK.The Canna glauca'Taney'had the highest growth rate of 29.84％,while the Myrio-phyllum verticillatum performed the worst,dying all in the A and B combinations.In conclusion,that different plant combinations have different removal rates of N,P and other physical indexes of water bodies.The removal capacity of total N by plant combina-tions is higher than CK,only combination a higher than CK at the removal capacity of total P,and the adaptation capacity of plants in different plant combinations to water bodies is also different.
plant combinationsremoval of Nremoval of Penvironmental effects
维普
万方数据
