Notice of RetractionMicroclimate Effects and Ecosystem Services Evaluation of Urban Wetlands in Guangzhou City

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.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

The aim of the present study was to test the microclimate effects and evaluate urban wetland ecosystem services in Guangzhou City, based on the supposition that urban wetlands ameliorate urban microclimate and thus enable more comfortable living conditions for a city´s inhabitants. Five urban wetlands in the areas of Guangzhou City were used for microclimate measurement in this study. Daytime air temperature (DAT) increased, while relative humidity (RH) decreased with the distance from the wetland. The daily and seasonal variation of DAT presented a single-peak pattern, and the daily variation of RH was contrary to the variation of DAT. The suburban wetland had a stronger effect on the microclimate than an equivalent wetland in the center of the city. The value of wetland ecosystem services in Guangzhou City at the time of the study was 86.822 billion yuan (6.8 yuan=l USD as of August, 2010), among which the value of microclimate regulation was 2.504 billion yuan. The results indicated that the effects of urban wetlands on microclimate and on human comfort levels varied with the distances from the wetlands and the locations of the wetlands in the city.