Research Background:
Over 60% of global port cities face spatial utilization conflicts in land-sea interaction zones. This research examines the hidden relationships among reclamation project approval policies, coastal zoning regulations, and the durability of marine infrastructure, revealing long-term anthropogenic impacts on nearshore geological processes.

Key Issues:
· Correlation modeling between intertidal land-use intensity and seawall structural failure risks
· Dynamic adaptation of offshore wind turbine foundation designs to seabed sediment transport patterns
· Cost-reduction effects of mangrove reserve delineation on breakwater maintenance
· Development of resilient coastal planning decision-support systems based on integrated land-sea governance

Methodological Innovation:
Incorporating geochronological analysis of historical coastline evolution data with multi-agent simulations of artificial coastal system trajectories under different policy scenarios. Special emphasis is placed on the potential moderating effects of regional climatic variations on conclusions.