中文摘要：

在考虑水体斜压的基础上利用MIKE3三维数值模型的HD和Ecolab模块,对莱州湾的水动力环境进行了数值模拟,并将验证良好的该模型用于分析预测集约用海工程的实施对莱州湾水动力环境造成的影响。研究结果表明：工程并不会大范围改变莱州湾海域的水动力特征,影响主要集中在工程区附近,距工程新岸线约20 km处,流速变化率在15%左右甚至更小;工程造成海湾纳潮量在大小潮期分别减小0.29%和1.07%,海湾与外海水交换能力被削弱,可能会导致湾内水体污染加剧;工程实施后海湾PO4-P平均浓度升高,DIN平均浓度降低,N/P比下降,海域磷限制作用被削弱。

英文摘要：

Based on the consideration of baroclinic water,HD and Ecolab module of a three-dimensional numerical model MIKE3 have been used to simulate hydrodynamic environment and to predict the influences of a reclamation project in Laizhou Bay. The study shows that the project won’t change the hydrodynamic characteristics widely in Laizhou Bay,with affecton mainly concentrated in the vicinity of the project. At twenty kilometres from the new shoreline,the change rate of velocity is about 15%,or even less. Tidal prism of bay is reduced by 0. 29% and 1. 07% during spring and neap tide respectively after the project,and water exchange ability between the bay and the outer sea is also weakened,which may exacerbate water pollution. Besides these,the project leads to the increase of average PO4-P concentration and the decrease of average DIN concentration. The value of N / P decreases,which makes the phosphorus restriction effect weakened.