全球大河流域建设有众多大型水库，已满足水资源、洪涝灾害调控和发电的需求。随着绿色能源需求的增加，将建设更多的大型水库。水库洪季蓄水、枯季放水，对河流下游径流量具有季节性调控作用。洪涝灾害主要发生于洪季，河口盐水入侵主要发生于枯季，流域水库蓄水期间下游径流量减少，放水期间下游径流量增加，这对下游洪涝灾害减轻、淡水资源的利用是有利的。水库大坝拦截泥沙，导致下游河流和河口泥沙减少，会对冲淤和环境产生影响。举办本次国际会议以澄清流域水库会导致下游淡水资源枯竭、加重洪涝灾害的错误认识，研讨流域水库对下游河道泥沙输运和冲淤、河口和近海环境的影响，以建设水库满足绿色能源的同时，更好地保护生态环境。

 

 

 

Many large reservoirs have been built in large river basins around the world, which have met the needs of water resources, flood disaster regulation and power generation. With the increasing demand for green energy, more large reservoirs will be built. The reservoirs store water in flood season and release water in dry season, which has a seasonal regulation effect on river discharge in the lower reaches of the river. The flood disasters mainly occur in flood season, and estuarine saltwater intrusions mainly occur in dry season. The seasonal regulations of river discharge by reservoirs in the basin are bound to have an impact on the downstream freshwater resources and flood disasters. In addition, the reservoir dams intercept sediment, resulting in the reduction of sediment in downstream rivers and estuaries, which have had an impact on siltation and the environment. The international workshop will discuss the impact of basin reservoirs on downstream freshwater resources, flood disasters, erosion and deposition, as well as estuarine and offshore environment, so as to make better use of freshwater resources, reduce flood disasters and protect the ecological environment.

 

 

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