The present study sampled every month from June to November in 2016, aimed to assess the effect of oxidoreductase activity on the removal rate of pollutants from constructed wetlands and to determine whether matrix enzyme activity can be used to assess the effectiveness of overall removal rate. Integrated vertical-flow constructed wetlands that incorporated two substrates(bio-ceramics and pebbles) and three plant species(Thalia dealbata, Canna indica, and Pontederia cordata) were constructed to investigate ...