Tidal variability and microplastics distribution:source analysis in Dongshan Bay beach sediments,South China  

作　　者：A B M Sadique RAYHAN Jun WANG Md Mazharul ISLAM Kazi Belayet HOSSAIN Bin CHEN Hongwei KE Minggang CAI 

机构地区：[1]Coastal and Ocean Management Institute,Xiamen University,Xiamen 361102,China [2]Department of Marine Biology,Xiamen Ocean Vocational College,Xiamen 361102,China [3]State Key Laboratory of Marine Environmental Science,Xiamen University,Xiamen 361102,China [4]College of Environment and Ecology,Xiamen University,Xiamen 361102,China [5]College of Ocean and Earth Science,Xiamen University,Xiamen 361102,China [6]Key Laboratory of Estuarine Ecological Security and Environmental Health,Education Department of Fujian,Tan Kah Kee College,Xiamen University,Zhangzhou 363105,China [7]Department of Environmental Science and Engineering,Tan Kah Kee College,Xiamen University,Zhangzhou 363105,China

出　　处：《Journal of Oceanology and Limnology》2025年第2期459-473,共15页海洋湖沼学报(英文)

基　　金：the Natural Science Key Foundation of Fujian Province;China(No.2020J02002);the Hainan Province Science and Technology Special Fund(No.ZDYF2022SHFZ317);the National Natural Science Foundation of China(Nos.U2005207,41976216,41776088,42106224);the Norwegian Institute of Food;Fishery and Aquaculture;Governance of Marine Plastic Litter in the Arctic。

摘　　要：Microplastic(MP)contamination is becoming a major worldwide concern,affecting terrestrial and aquatic ecosystems.This study investigated the source,distribution,and abundance of MPs in sediments from Dongshan Bay,Fujian,South China,emphasizing particularly the coastline region's susceptibility to tidal impacts in four study sites.The concentrations of MPs in the sediments in the four sites were high from 7.4 to 283.1 items/kg(dry weight).There were notable differences in abundance between the locations and tide levels.Tides influenced the distribution of MPs greatly;however,the estuary areas showed greater MPs abundance during high tide,due possibly to enhanced water turbulence and riverine inputs.Low tide indicated higher concentrations in coastal locations owing to accumulation.Popular varieties,including nylon,polypropylene,and polyethylene,were identified by polymer research,pointing to the origins from fishing,packaging,and mariculture industries.Potential sources were determined using the PCA-K-means statistical analysis,by linking the origins of MPs to domestic activities,fishing,mariculturing,shipping,and packing.Fishing and packing were shown in the Sankey diagram as the two main sources,but their effects varied with research locations and tidal regimes.This study clarified the intricate dynamics of MPs pollution,highlighting the impact of tides on its dispersal and the variety of sources that contribute to this widespread environmental problem in coastal areas.

关 键 词：microplastic(MP) TIDE source sediment Dongshan Bay 

分 类 号：P736.21[天文地球—海洋地质] X55[天文地球—海洋科学]