摘要
許多海廢監測方法仰賴件數作為計量單位，這會導致低估大型海廢。為了解海廢的來源，本研究以體積計量的海廢調查，在2020年四季調查全台灣1%的海岸線。在四次調查中，平均計有636平方公尺的海廢，近70%來自於廢棄漁具、約20%來自於寶特瓶，而10%來自其他廢棄物。從調查照片中彙整了66種廢棄漁具，我們將之整理成圖鑑。最常見的種類來自中國與台灣的硬塑膠浮球。海廢平均密度為877立方公尺/100公尺，顯示台灣遭廢棄漁具高度污染。因此，本研究呼籲更好的本地廢棄物管理政策，以及導入漁具的生產者延伸責任。
Abstract
Most marine litter monitoring surveys are based on item count, leading to an underrepresentation of larger litter. To better understand significant sources, this study conducted a volume-based marine litter survey in 2020, covering 1% of Taiwan’s 1680 km coastline. In four monitoring periods, a total of 636 m3 of marine litter was detected from which ~70% stemmed from derelict fishing gear (DFG), ~20% from plastic bottles and ~10% from other waste. Survey pictures revealed 66 types of DFG which were compiled into an index. The most frequent items were hard plastic buoys from China and Taiwan. At an average concentration of 877 dm3/100m, Taiwan showed an extremely high level of DFG pollution. Therefore, this study calls for better domestic waste management practices and the introduction of an extended producer responsibility scheme for fishing gear.
Schneider, F., Lin, H. T., Hu, C. S., Hsu, C. H., & Yen, N. (2022). Volume-based assessment of coastal litter reveals a significant underestimation of marine litter from ocean-based activities in East Asia. Regional Studies in Marine Science, 102214.