独墅湖枯水期水动力与水质状况分析

Analysis on Hydrodynamics and Water Quality Statuses of Dushuhu Lake in Dry Season

【目的】研究分析独墅湖的水动力和水质状况。【方法】采用现场调查的方法,对独墅湖枯水期多个测点的水动力和水质状况进行取样分析。【结果】独墅湖水面坡降、水流流速和进出湖流量都非常小,不利于污染物质随水流排出。水质方面总磷(TP)、总氮(TN)和化学需氧量(CODMn)等因子含量高的水域溶解氧(DO)含量低而叶绿素a含量高,反之亦然。【结论】受周围河网影响,独墅湖水体中TP和TN含量非常高,已属于富营养化,需要对进出湖污染物和过度养殖的影响进一步研究,为采取相关措施改善独墅湖水质提供参考。

Objective]Investigation on hydrodynamics and water quality in the Dushuhu Lake.[Methods]The research on hydrodynamics and water quality statuses of several monitoring spots in the Dushuhu Lake was studied.[Results]Data show that water?surface gradient,flow velocity and flux of in?and out?lake are all very small,which is difficult for the pollutant dis-charge.In the aspect of water quality,low DO concentration and high chlorophyll?a concen-tration appears in the water area where the concentrations of TP,TN and CODMn are high, and vice versa.[Conclusion]Affected by around rivers,the high concentrations of TP and TN in the Dushuhu Lake shows that it becomes a eutrophic lake.It is necessary that the effects of pollutant and over culturing are studied in order to provide reference for improving water quality of the Dushuhu Lake.