Research on the evaluation method of key coastal segments for marine litter distribution based on TFAHP-CRITIC-GT

Key Points

• The aim is to establish a comprehensive evaluation model for assessing marine litter distribution in coastal areas based on various ecological and human activity factors.
• Developed a multi-dimensional evaluation index system including five categories: aquaculture areas, residential areas, port areas, industrial areas, and natural reserves.
• Implemented the TFAHP-CRITIC-GT model for categorizing coastal segments based on marine litter distribution.
• Used drone technology to assess marine litter density in various coastal segment grades.
• Identified 760 coastal segments (51.8% of total length) prone to high marine litter accumulation, classified as grades A and B.
• Average litter density in grade A segments was observed at 653.5 m²/km, while grade E segments had a density of 44.4 m²/km, indicating significant variation.
• The evaluation model provides a scientific basis for marine resource management and decision-making efficiency.