期刊
ENVIRONMENTAL POLLUTION
卷 244, 期 -, 页码 685-692出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2018.10.089
关键词
Microplastics; Semi-enclosed Maowei sea; Mangrove sediment
资金
- Natural Science Foundation of China [91428203, 21507077, 41673105, 21806026]
- MEL Young Scientist Visiting Fellowship [MELRS1744]
Microplastic pollution of intertidal mangrove ecosystems is receiving growing attention, and scientists suspect that the microplastic pollution of semi-enclosed seas is significantly different from that of other coastal types because of their unique geographical features. However, data on the distributions and characteristics of microplastics in the mangrove sediment of semi-enclosed seas are very limited. This study selected the Maowei Sea, a typical semi-enclosed sea, as its representative study site. The analysis revealed that the microplastic abundances in the river estuaries were much lower than those at the oceanic entrance zones, with values ranging from 520 +/- 8 to 940 +/- 17 items/kg. Polyethylene (PE)/polypropylene (PP)/polystyrene (PS), white/transparent, and <1 mm were the dominant type, colour, and size of the microplastics, respectively, in the observed mangrove sediments. Moreover, some other factors, including the rhizosphere/non-rhizosphere and the proportion of organic matter, codetermined the distribution and characteristics of microplastics. Specifically: (1) the percentage of colorful micro plastics were higher in the rhizosphere due to the microbial activities and (2) positive linear relationships were found between the pore volume (PV) values of the free particulate organic matter (FPOM), occluded particulate organic matter (OPOM) (1.6-2.0 g/cm(3) and >2.0 g/cm(3)), and the abundance of very small microplastics (<1 mm). (C) 2018 Published by Elsevier Ltd.
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