Nature-Based Restoration Simulation for Disaster-Prone Coastal Area Using Green Infrastructure Effect.

Area of Science:

• Environmental Science
• Urban Planning
• Coastal Management

Background:

• Coastal floods are exacerbated by typhoons and heavy rainfall.
• Social-ecological system interference intensifies flood risks.
• Gray infrastructure has limitations; green infrastructure offers a nature-based solution.

Purpose of the Study:

• To simulate coastal restoration using green infrastructure.
• To quantify the resilience effects of green infrastructure.
• To present a nature-based restoration plan for disaster-prone areas.

Main Methods:

• Selected Haeundae-gu, Busan, Republic of Korea, as a typhoon-affected study area.
• Modeled runoff and green infrastructure effects using data from Typhoon Chaba.
• Quantified green infrastructure impacts on resilience.

Main Results:

• Maximum runoff reduction achieved with a 30% biotope area ratio on artificial ground.
• Green roofs showed peak effect at 6 hours post-typhoon; infiltration facilities at 9 hours.
• Porous pavement had the lowest runoff reduction; 20% biotope ratio restored system resilience.

Conclusions:

• Green infrastructure significantly reduces runoff and enhances coastal resilience.
• This study provides a framework for nature-based restoration planning.
• Findings offer a tool for effective coastal disaster management policy.