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Research on the evaluation method of key coastal segments for marine litter distribution based on TFAHP-CRITIC-GT
Summary
Chinese researchers developed a composite TFAHP-CRITIC-GT model to rank coastal segments in Fujian Province by marine litter accumulation risk, finding 51.8% of the coastline at high risk with top-grade segments showing average debris densities of 653.5 m²/km confirmed by drone surveys. Systematic identification of litter hotspots is a prerequisite for targeted cleanup of the coastal zones where plastics break down into microplastics before entering marine food webs.
针对福建省海洋垃圾分布重点岸段的评价管理需求，本研究建立了涵盖人类活动和生态保护两个维度的评价指标体系，涵盖海水养殖集中区、居民生活区、港口集中区、工业集中区及旅游自然保护区5类评价指标，在此基础上开发了一个用于海洋垃圾分布重点岸段评价的TFAHP-CRITIC-GT综合模型。用此模型对福建省全省岸段进行分级，获得海洋垃圾易堆积的岸段（岸段等级A级和B级）760条，占全省岸段长度的51.8%，并通过无人机技术与海洋垃圾密度指标，发现A级岸段垃圾密度最高，平均密度为653.5 m2/km，而E级岸段垃圾密度最低，平均密度为44.4 m2/km。可见，本研究提出的评价模型能够为沿海区域的海洋垃圾清理和管理提供科学依据，提升相关单位在海洋资源管理中的决策效率。