生态环境学报2023，Vol.32Issue(11)：1901-1912,12.DOI:10.16258/j.cnki.1674-5906.2023.11.001
北运河水体、沉积物和鱼类中微塑料的分布特征研究
Distribution Characteristics of Microplastics in Water,Sediment and Fish in Beiyun River
摘要
Abstract
Microplastic pollution in river waters has attracted widespread attention at home and abroad,but there are relatively few studies on microplastic pollution in multi-environmental media in urban drainage rivers that has significant influences on human activities during different water periods.In order to reveal the distribution pattern of microplastics in urban drainage channels,this paper took the water bodies of Beijing's Beiyun River as an example.Based on the surface water,sediment and fish samples of the Beiyun River during flood and non-flood periods,the paper analyzed and summarized the spatial and temporal distribution characteristics of different types of microplastics,discussed the differences in composition characteristics and revealed the main sources of microplastics in the Beiyun River.The results showed that the abundance of microplastics in the surface water of the Beiyun River ranged between 4.9-22.1 items∙L-1(flood)and 3.10-14.8 items∙L-1(non-flood);the abundance of microplastics in the sediment ranged between 0.74×103-2.88×103 items∙kg-1(flood)and 0.16×103-1.69×103 items∙kg-1(non-flood);abundance of microplastics in the fish gut ranged between 0.33-3.33 items∙ind-1.In comparison with other rivers at home and abroad,microplastic pollution in water and sediment in the Beiyun River was at a moderate level,with a low level of microplastic pollution in fish.On the temporal dimension,the abundance of microplastics in both surface water and sediment was greater in the flood season than in the non-flood season.On the spatial dimension,the abundance of microplastics in surface water was greater in the country section than in the urban section during the flood season,and in the non-flood season,it was greater in the urban section than in the country section,and the abundance of microplastics in sediments did not show significant correlation between different water periods.Surface water was dominated by less than or equal to 0.5 mm clear/white polyethylene and polypropylene fibers,sediment was dominated by less than or equal to 0.5 mm clear/white polyethylene/polypropylene fragments,and fish were most abundant in less than or equal to 0.5 mm blue cellulose fibers.The abundance of microplastics in the gut of omnivorous fish was significantly higher than that of carnivorous,and the perched water layer had less influence on the abundance of microplastics in the gut of fish.The main sources of microplastics in the Beiyun River are human daily life,tourism,fishing activities and sewage discharge.The results of the study can provide baseline data for the study of microplastic pollution in urban rivers and provide a reference for the control and prevention of microplastic pollution.关键词
微塑料/北运河/水体/沉积物/鱼类/分布特征Key words
microplastics/Beiyun River/water/sediment/fish/distribution characteristics分类
资源环境引用本文复制引用
何文宣,李垒,孙思宇,李昌,李久义,田秀君..北运河水体、沉积物和鱼类中微塑料的分布特征研究[J].生态环境学报,2023,32(11):1901-1912,12.基金项目
北京市科技计划课题(Z221100005222013) （Z221100005222013）
流域水环境与生态技术北京市重点实验室开放基金项目(BKL-KF-2021-003-SHJ) （BKL-KF-2021-003-SHJ）
