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本文在调查研究的基础上,论述了长江径流的主要作用,并且给出了长江径流量分别与含沙量、营养盐含量的经验关系,同时阐述了河口近海区水动力条件,给出了径流量与沿岸锋锋位的回归关系。根据上述关系及长江三峡工程运行预案,研究了工程兴建后可能对河口近海地区理化环境要素分布的影响。研究表明,该工程兴建后虽对河口近海产生一定的影响,但并不会超出历史上自然变化对其影响的范围及程度。
Based on the investigation and study, this paper discusses the main role of runoff in the Yangtze River, and gives the empirical relationship between the runoff of the Yangtze River and the sediment concentration and nutrient content respectively. At the same time, the hydrodynamic conditions in estuarine estuary area are described, Regression relationship between the flow and the front of the coast. Based on the above relationship and the operational plan for the Three Gorges Project in the Yangtze River, the impact of possible physical and chemical environmental factors on the offshore estuaries of the estuary after the construction of the project is studied. The research shows that although the project has some influence on the offshore estuary after its construction, it will not go beyond the extent and extent of the impact of natural changes in history.