秦淮河石臼湖跨流域抗旱调水对沿线水体及水域功能的影响

Effect of Qinhuai River-Shijiu Lake interbasin water transfer for drought mitigation on quality and function of nearby water

根据2011年秦淮河石臼湖跨流域抗旱调水前后调水沿线水体水质资料,分析调水对沿线水体水质及石臼湖南京高淳、溧水渔业、工业用水区水域功能的影响。结果表明:抗旱调水成效明显,调水结束后,调水沿线秦淮河水质有所改善,水质类别与调水前相比均呈上升趋势,各超标项目超标倍数随时间均呈下降趋势;石臼湖需水量得到了补给,石臼湖旱情得到缓解,水质能够满足淡水养殖用水和农田灌溉用水需求。

According to the quality data of nearby water before and after Qinhuai River-Shijiu Lake interbasin water transfer for drought mitigation in 2011,the effects of water transfer on the water quality of Qinhuai River and the function of fishery and industrial water areas of Gaochun County and Lishui County of Nanjing City on Shijiu Lake are analyzed.The results indicate that the efficiency of water transfer for drought mitigation is obvious.The water quality of Qinhuai River is improved after the water transfer,and the category of water quality has an increasing tendency compared with that before the water transfer.The excessive multiples of all pollution factors decrease with time.The water demand of Shijiu Lake is supplied,and its drought situation is mitigated.The water quality of Shijiu Lake can meet the requirements of freshwater aquaculture and farmland irrigation.