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Composition, spatial distribution and sources of plastic litter on the East China Sea floor.
Science of the Total Environment ( IF 9.8 ) Pub Date : 2020-06-30 , DOI: 10.1016/j.scitotenv.2020.140525
Feng Zhang 1 , Chenyang Yao 2 , Jiayi Xu 1 , Lixin Zhu 1 , Guyu Peng 1 , Daoji Li 1
Affiliation  

Plastics are present in all marine waters around the globe, often at high abundances and they are potentially harmful to marine organisms. In this study, we investigated the regional distribution, composition, and abundance of plastic items on the floor of the East China Sea based on 43 bottom trawl samples collected during 2019. Considerable geographical variation was detected. Polyethylene was the most abundant polymer type where it accounted for 42.83% by weight. The surface areas and lengths of the plastic items ranged from 3.43 to 2842 cm2 and from 1.3 cm to 14.23 cm, respectively. The plastic density was 18.94 kg/km2 in Sanmen Bay but it was significantly lower at 2.24 kg/km2 in Wenzhou Bay. Fishing gear represented 23.87% of the plastic items. The plastic items found on the coastal sea bed were probably transported and moved during upwelling and downwelling processes, and finally deposited on the seafloor due to the effect of biofouling. The accumulation of macro- and mesoplastics could have detrimental impacts on seafloor ecosystems.



中文翻译:

东海底塑料垃圾的组成,空间分布和来源。

塑料经常以很高的含量存在于全球所有海水中,并且可能对海洋生物有害。在这项研究中,我们根据2019年收集的43个底部拖网样本,调查了东海底塑料制品的区域分布,组成和数量,发现了相当大的地理差异。聚乙烯是最丰富的聚合物类型,它占重量的42.83%。塑料制品的表面积和长度分别为3.43至2842cm 2和1.3cm至14.23cm。三门湾的塑料密度为18.94 kg / km 2,但显着较低,为2.24 kg / km 2在温州湾。渔具占塑料制品的23.87%。在沿海海床上发现的塑料物品可能在上涌和下涌过程中被运输和移动,最后由于生物污损的影响而最终沉积在海底。宏观和中观塑料的积累可能对海底生态系统产生不利影响。

更新日期:2020-07-03
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