In the current study,the quality parameters( TN and TP) of the water from the inlet and outlet of an area were examined where seven species of wetland plants were planted. In addition,plant biomass per unit area and N and P concentrations in different plant parts were recorded. N and P absorbencies of the wetland plants in different seasons were analyzed and compared. The experimental results show that the average removal rates of N and P by the planting area varies from 44. 00% to 70. 29% and 49. 98% to 70...