长江口滩涂变化及其原因分析  

Tidal flat variation in Yangtze River Estuary and cause analysis

作　　者：徐骏 刘羽婷 唐敏炯 吕志钢 XU Jun;LIU Yuting;TANG Minjiong;LV Zhigang(Changjiang River Estuary Bureau of Hydrology and Water Resources Survey,Bureau of Hydrology of Chang Water Resources Commission,Shanghai 200136,China)

机构地区：[1]长江水利委员会水文局长江口水文水资源勘测局

出　　处：《人民长江》2019年第12期1-6,30,共7页Yangtze River

基　　金：国家重点研发计划资助项目(2017YFC0405402)

摘　　要：为探讨长江口滩涂变化及其成因基于实测地形资料对长江口门的五大滩涂湿地以及崇明北沿的滩涂进行了分析研究结果表明:在流域来沙减少的情况下近年来长江口主要滩涂的演变趋势总体呈现高滩淤积中、低滩冲刷的特征长江口滩涂受整治工程影响远大于自然演变建议应在长江口综合整治开发规划等相关规划的指导下研究固滩促淤方案采取相应的固沙措施加强对促淤圈围工程的科学谋划和管理保护长江口地区滩涂资源.To investigate the variation and causes of tidal flats in the Yangtze estuary,this article analyzed 5 main tidal flats in the Yangtze River Estuary and the tidal flat at the north edge of Chongming Island based on the observed topographic data.The analysis showed that the evolution trend of the main tidal flats in the Yangtze River Estuary generally presents deposition in higher beach and scouring in lower middle and beach,in the case of reduced sediment coming from the river basin.The tidal flat is affected by the renovation project far more than the natural evolution.It is suggested that flat consolidation and sedimentation promotion should be conducted under the guidance of comprehensive regulation and development plan for the Yangtze River Estuary,the corresponding sediment fixation measures should be taken,the scientific planning and management of the reclamation and enclosure project should be strengthened to protect the tidal flat resources in the Yangtze River Estuary.

关 键 词：滩涂变化 整治工程 来水来沙条件 长江口 

分 类 号：P748[天文地球—海洋科学]