An inshore-offshore sorting system revealed from global classification of ocean litter
An inshore-offshore sorting system revealed from global classification of ocean litter
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DOI：
10.1038/s41893-021-00720-8
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发表时间：
2021-06-01
影响因子：
27.6
通讯作者：
Cozar, Andres
中科院分区：
文献类型：
--
作者：
Morales-Caselles, Carmen;Viejo, Josue;Cozar, Andres
对海洋垃圾的研究激增，产生了有关其输入、分布和影响的重要信息，但有关垃圾性质和来源的数据仍然分散。在这里，我们协调了全球七个主要水生环境中的垃圾类型清单，发现外卖食品和饮料中的一系列塑料制品在全球垃圾中占主导地位，其次是捕鱼活动产生的塑料制品。环境之间的成分差异表明垃圾有被困在近岸地区的趋势，因此陆地来源的塑料主要以小塑料碎片的形式释放到公海。世界各地近岸垃圾汇构成的差异反映了社会经济驱动因素，高收入国家一次性物品的相对重量有所减少。总体而言，这项研究有助于为管理地球上污染最严重的人造物品的生产、使用和归宿提供迫切需要的行动信息，但挑战仍然巨大。有关海洋垃圾的数据分散。这项研究协调了全球水生垃圾清单，发现全球垃圾主要是外卖食品中的塑料，其次是捕鱼，垃圾被困在近岸地区，而陆地来源的塑料大部分以小碎片的形式进入公海。
The surge of research on marine litter is generating important information on its inputs, distribution and impacts, but data on the nature and origin of the litter remain scattered. Here, we harmonize worldwide litter-type inventories across seven major aquatic environments and find that a set of plastic items from take-out food and beverages largely dominates global litter, followed by those resulting from fishing activities. Compositional differences between environments point to a trend for litter to be trapped in nearshore areas so that land-sourced plastic is released to the open ocean, predominantly as small plastic fragments. The world differences in the composition of the nearshore litter sink reflected socioeconomic drivers, with a reduced relative weight of single-use items in high-income countries. Overall, this study helps inform urgently needed actions to manage the production, use and fate of the most polluting human-made items on our planet, but the challenge remains substantial.Data on marine litter are scattered. Harmonizing worldwide aquatic litter inventories, this study finds global litter dominated by plastics from take-out food, followed by fishing, with litter being trapped in nearshore areas and land-sourced plastic reaching the open ocean mostly as small fragments.