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为了更好地解决辽阳、鞍山等城市工业及居民生活用水，1996年开始实施引兰入场工程，即通过管道把兰河部分水量引人汤河水库．这一工程带来的社会效益和经济效益是十分明显的，但与此同时，仓存在着相应的负效益．通过理论分析，结合1998年实际引水状况，分析了引水工程给 南水库带来的负效益，即水量损失、水质污染变化、发电效益损失、供水效益损失等．
In order to solve the problems of industrial use and daily life of cities such as Liaoyang and Anshan, the project of introducing Lanlan was started in 1996, that is, part of the Lanhe water was introduced into Tanghe Reservoir through the pipeline. The social and economic benefits brought by this project are very obvious, but at the same time, there is a corresponding negative profit in the warehouse. Through theoretical analysis and combined with actual water diversion in 1998, the negative benefits to the South Reservoir from the water diversion project are analyzed, namely the loss of water amount, the change of water pollution, the loss of power generation benefit and the loss of water supply benefit.