Notice of RetractionGrowth, Nitrogen and Phosphorous Accumulation of Two Species of Plants in Constructed Wetlands

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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Outdoor experiments were conducted to investigate two hydrophytes´ (Typha orientalis Presl and Pontederia cordata) accumulating ability of nitrogen and phosphorus in eutrophic water. After 5 months´ growth, biomass of Typha orientalis Presl and Pontederia cordata was 6.65kg·m^-2 and 10.83kg·m^-2 respectively, about 6 to 7 times of their biomass before cultivation respectively. TN contents in different parts of Pontederia cordata had the following order: leaves>;roots>;stems, while the order of TN accumulation in different parts of Typha orientalis Presl was roots>;leaves>;stems. Pontederia cordata had the highest nitrogen and phosphorus accumulation of 117.12 g·m^-2 and 25.42 g·m^-2 respectively. The below ground parts of Typha orientalis Presl accumulated much more nitrogen and phosphorus than those of above ground parts, and the ratio of nitrogen accumulated in the below ground parts of Typha orientalis Presl to the above ground parts was 2.98 and for phosphorus it was 3.79.