阐述了巢湖对生态调水的需求,并在2009年现场调水试验的基础上,分析与评价了调水对巢湖东西丰湖的水质影响.调水期间,环巢湖支流汇入湖水量5.02亿m3,出湖水量6.31亿m3,湖体TP、TN分别增加77.6和619.0t,CODHMn减少了517.0t.调水试验结果表明,调水结束后东丰湖TP浓度增加了7.6%,TN、CODMn、Chla浓度分别减小了40.3%,8.2%,41.8%;西半湖TP、TN、CODMn、Chla浓度分别增加了82.5%、1.2%、3.9%、711.8%;西半湖浓度增加的同时,东丰湖浓度在降低,调水效果明显.%The Chaohu Lake demand for the ecological water diversion and the impact of the water diversion on the water quality of both eastem and western parts of Chaohu Lake based on the on-site water diversion test in 2009 were expounded. during the water diversion, the converged water volume of tributaries around Chaohu Lake was 502 million m' while outflow volume was 631 million m'. The TP , TN of the lake increased for 77.6 t and 619 t separately, with CODMn being decreased for 517 t .The test result slowed that after the water diversion, the TP density of the eastern lake had been increased for 7. 6％ and the concentration of TN 、CODMn 、 Chla had been increased for 40. 3％ 、8. 2％、41.8％ separately. while that for western lake had been increased by 82 5％ 、1.2％ ,3.9％ 、711.8％ separately. When the cocentration of the western lake increased. the density of eastern lake decreased simultaneously, which showed that the water diversion effect was obvious.
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