| The economic development of coastal regions has prompted numerous land reclamation projects, and their impact on marine hydrodynamics and environmental capacity cannot be neglected. Taking Qinzhou Port Area in the Beibuwan as a case study, this research utilized the MIKE21 hydrodynamic model to establish a transport model for hydrodynamic materials in the Qinzhou Bay area. Furthermore, it assessed the impact of land reclamation projects in Qinzhou Port Area on the nearby marine hydrodynamic environment and environmental capacity. The results indicate that the land reclamation projects in Qinzhou Port Area have a relatively minor overall influence on the hydrodynamic conditions nearby. Only slight differences in velocity distribution patterns were observed on the western side of the reclaimed land area, while the overall patterns remained largely consistent. Similarly, the marine environmental capacity near Qinzhou Port Area is also minimally affected by the land reclamation projects. Conversely, protective objectives, such as legally defined red lines, are the primary constraints limiting the current marine environmental capacity. By considering factors such as legal and regulatory red lines, this research provides scientific support for the assessment, management, and prediction of the aquatic environment in Qinzhou Port Area of the Beibuwan. It also offers significant guidance for coastal planning, remediation, and ecological and environmental protection in the Beibuwan region. |
