||Jhongdou artificial wetland was completed in 2011. The original purpose to build this wetland was to depurate Lover River. Due to Jhongdou wetland park was poorly designed on hydraulic engineering which made the water body unable to be circlated completely and thus caused eutrophication occurring in the wetland. In addition that Love River always suffered by red tide outbreak. In order to understand Jhongdou artificial wetland and Love River water body situation, a one-year sampling period was conducted from March 2013 to April 2014, to investigate the eutrophication and to suggest some technical improving methods.|
Apply water quality parameters and water quality index can be found that Jhongdou artificial wetland was poor decontamination efficiency and River body was heavily polluted. Study Carlson single index and biodiversity index to assess Love River and wetland water body eutrophication. The assessing results showed that the water body was presented eutrophicaton. In additions, we also used the percentage to investigate species composition in both water bodies. It was found that the dominant species was Pseudobattonella sp., Cyclotella sp. and Euglena sp.
In the study, salinity, BOD5 and zooplankton were influence phytoplankton growth up. Meanwhile, we used the method of similarity analysis phytoplankton groups was different in Lover River and wetland.
The results showed that Jhongdou artificial wetland there was decontamination of poor performance, which made both Love River and Jhongdou wetland indeed had the problem of eutrophicatio. Beside, due to a poor hydraulic engineering design Jhongdou wetland, the circulation of wetland water was poor, resulting in less function in water purification in the wetland. we suggested to use one-way gates to control the water flow into the wetland from Love River, which could force the wetland water to conduct one-way loop, and enhance the water turnover rate, nutrients accumulation was reduced and the eutrophication problems was solved.