建设水利水电工程不可能不改变天然河流的水流状态和水文条件,因此必然会对其周围的自然环境和生态系统带来某些影响,其中有些不利影响虽然可以采取某些措施加以控制或消除,但是将付出相当的人力、物力等的代价;另外有些影响,尤其是环境、 The construction of water conservancy and hydropower projects is impossible not to change the natural river flow conditions and hydrological conditions, it will inevitably have some impact on its natural environment and ecosystems, some of which adverse effects can take some measures to control or eliminate, But will pay a considerable amount of manpower, material resources and other costs; other effects, especially the environment,