2012•Journal of North China Institute of Water Conservancy and Hydroelectric PowerRequires access
Assessment on the Evolution Characteristics and Eutrophication of Water Quality in Wuliangsuhai Lake
Pan Hongwei
Open publisher page 3 citations
Abstract
The spatial and temporal variation law of the essential nutrients in Wuliangsuhai Lake in different lake sites was analyzed in the paper by using the passed six years' water quality monitoring data.Results showed that the nutrient salt content was lower in the lake outlet while higher in the body of the lake.Influenced by the return water yield and the water quality of Hetao irrigation district,the nutrients concentrations of NH3-N,TN and TP in the wet season were than that in the low water season,while lowest in the normal water season.It also showed a downward trend of the COD concentration over the recent years,but the concentration was still higher than the VI level of lake water quality standard,while the NH3-N,TN and TP concentrations showed the trend of fluctuation during recent years.Finally,by use of aggregative nutrition status index method,the Wuliangsuhai Lake eutrophication assessment result was judged as the middle level in 2011.