Different kinds of constructed wetlands(CWs)were constructed,to investigate treatment performance of CWs treating erutrophic scenic water,select suitable plants, substrates and CWs,and improve the performance and stability of CWs in winter. Purification efficiency,impact factors and pollutants concentrations of different types of CWs were studied.Then plant growth characteristic,nitrogen and phosphorus uptake capacity and its contribution to the removal of nutrients were investigated. Nitrogen and pho...