Hydrological factors of formation of large flood in the lower tidal reach of the Yangtze River are analyzed, and change trend of large flood is revealed.
分析了长江下游感潮河段大洪水和特大洪水高水位形成的水文因素，揭示了年最高水位今后一段时期内可能的变化趋势。
After analyzing the characteristics of grain size and the susceptibilities of the sedimentary samples, we identified several flood events in the lower reach of Yangtze River.
研究了长江下游南通段河漫滩沉积剖面的粒度和磁化率特征，由此识别出长江下游南通段现代洪水事件。
After completion of TGP, the flood control situation of the middle and lower Yangtze river, especially the Jingjiang reach, will be improved radically.
三峡工程建成后长江中下游特别是荆江防洪形势将会发生根本性的改善。
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