INESC Coimbra, Department of Electrical and Computer Engineering, Polo 2, 3030 - 290, Coimbra, Portugal.
INESC Coimbra, Department of Electrical and Computer Engineering, Polo 2, 3030 - 290, Coimbra, Portugal; University of Coimbra, Department of Mathematics, Coimbra, Portugal.
Environ Pollut. 2024 Nov 15;361:124863. doi: 10.1016/j.envpol.2024.124863. Epub 2024 Aug 30.
The weight of marine litter has been marginally considered in comparison to counting and categorizing items. However, weight determines litter dynamics on water and coasts, and it is an essential parameter for planning and optimizing clean-up activities. This work reviewed 80 publications that reported both the number and weight of beached macro-litter worldwide. On average, a litter item weighed 19.5 ± 20.3 g, with a median weight of 13.4 g. Plastics composed 80% by number and 51% by weight of the global litter bulk. A plastic item weighed 12.9 ± 13.8 g on average, with a median weight of 9 g. The analysis based on continents and on water bodies returned similar values, which can be used to estimate litter weight on beaches from past and future visual census surveys, and from remote sensing imagery. Overall, this work can improve litter monitoring reports and support dynamics modelling, thereby contributing for environmental protection and mitigation efforts.
与计数和分类项目相比，海洋垃圾的重量只是略有考虑。然而，重量决定了垃圾在水上和海岸上的动态，是规划和优化清理活动的重要参数。这项工作回顾了 80 篇报告了全球海滩上的大型海洋垃圾数量和重量的文献。平均而言，一件垃圾的重量为 19.5 ± 20.3 克，中位数重量为 13.4 克。塑料在数量上占全球垃圾总量的 80%，在重量上占 51%。塑料物品的平均重量为 12.9 ± 13.8 克，中位数重量为 9 克。基于各大洲和水体的分析得出了相似的数值，这些数值可用于根据过去和未来的视觉普查调查以及遥感图像来估算海滩上的垃圾重量。总的来说，这项工作可以改进垃圾监测报告，并支持动态建模，从而为环境保护和缓解努力做出贡献。
