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The hydro-fluctuation belt of the Three Gorges Reservoir: Source or sink of microplastics in the water?
Zhang, Kai1,2,3; Chen, Xianchuan2,3; Xiong, Xiong2; Ruan, Yuefei1; Zhou, Hane2,3; Wu, Chenxi2; Lam, Paul K. S.1
Corresponding AuthorWu, Chenxi(chenxi.wu@ihb.ac.cn)
2019-05-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume248Pages:279-285
AbstractReservoirs can be an important environmental compartment for microplastic pollution. Previous investigations have found that surface waters and sediments in the Three Gorges Reservoir (TGR) have had high microplastic abundance, and the Xiangxi River, which is one of the largest primary tributaries of the TGR, has had much higher microplastic abundance than several marine and freshwater systems in China. A strip of land on the bank of the reservoir area, which is called the hydro-fluctuation belt (HFB), is periodically exposed due to the special hydrodynamic conditions in the TGR The HFB may be an important source and/or sink of microplastics in TGR. In this study, microplastic occurrence in sediments from the Xiangxi River HFB was investigated to reflect the local microplastic pollution status and to evaluate its potential to serve as a source/sink of microplastics in the TGR Seven sampling sites were selected, and sediments within the HFB and above the belt were collected in summer when the water level was low. The results showed that the microplastic abundance ranged from 0.55 +/- 0.12 x 10(3) to 14.58 +/- 5.67 x 10(3) particles m(-2), which was one to two orders of magnitude higher than that in sediments from the Xiangxi River in our previous study (80-846 particles m(-2)). Statistical analysis revealed that the microplastic abundance within the HFB was significantly higher than that of the area above the HFB. The results indicate that the HFB can be an important microplastic sink when the water level is low, and the belt can turn into a potential source when the water level is high. Cluster analysis was applied to reveal the characteristics of the microplastics collected at different sites, and the results suggest that the cluster analysis may be a useful tool in elucidating the source and fate of microplastics. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordMicroplastics Reservoir Soil Hydro-fluctuation belt Cluster analysis
DOI10.1016/j.envpol.2019.02.043
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; City University of Hong Kong ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; City University of Hong Kong
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFE0190300] ; National Natural Science Foundation of China[NSFC41877394] ; City University of Hong Kong[7005103]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000466618000029
WOS KeywordPOLLUTION ; IMPACTS ; FRAGMENTATION ; DEGRADATION ; PROJECT
PublisherELSEVIER SCI LTD
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; City University of Hong Kong ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; City University of Hong Kong
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27584
Corresponding AuthorWu, Chenxi
Affiliation1.City Univ Hong Kong, State Key Lab Marine Pollut, Hong Kong, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 Donghu South Rd, Wuhan 430072, Hubei, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Kai,Chen, Xianchuan,Xiong, Xiong,et al. The hydro-fluctuation belt of the Three Gorges Reservoir: Source or sink of microplastics in the water?[J]. ENVIRONMENTAL POLLUTION,2019,248:279-285.
APA Zhang, Kai.,Chen, Xianchuan.,Xiong, Xiong.,Ruan, Yuefei.,Zhou, Hane.,...&Lam, Paul K. S..(2019).The hydro-fluctuation belt of the Three Gorges Reservoir: Source or sink of microplastics in the water?.ENVIRONMENTAL POLLUTION,248,279-285.
MLA Zhang, Kai,et al."The hydro-fluctuation belt of the Three Gorges Reservoir: Source or sink of microplastics in the water?".ENVIRONMENTAL POLLUTION 248(2019):279-285.
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