干旱区生态环境知识资源中心(Arid): Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia

Arid

DOI	10.1016/j.jenvman.2023.119353
	Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia
	Zhang, Peng; Wang, Jin; Huang, Lei; He, Mingzhu; Yang, Haotian; Song, Guang; Zhao, Jiecai; Li, Xinrong
通讯作者	Zhang, P ; Li, XR
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2023
卷号	348
英文摘要	Desertification and microplastic pollution are major environmental issues that impact the function of the ecosystem and human well-being of drylands. Land desertification may influence soil microplastics' abundance, transport, and distribution, but their distribution in the dryland deserts of Central Asia's Amu Darya-Aral Sea basin is unknown. Here, we investigated the abundance and distribution of microplastics in dryland desert soils from the Amu Darya River to the Aral Sea basin in Central Asia at a spatial scale of 1000 km and soil depths ranging from 0 to 50 cm. Microplastics were found in soils from all sample locations, with abundances ranging from 182 to 17841 items kg-1 and a median of 3369. Twenty-four polymers were identified, with polyurethane (PU, 37.3%), silicone resin (SR, 17.0%), and chlorinated polyethylene (CPE, 9.8%) accounting for 64.1% of all polymer types. The abundance of microplastics was significantly higher in deep (20-50 cm) soils than in surface (0-5, 5-20 cm) soils. The main morphological characteristics of the observed microplastics were small size (20-50 mu m) and irregular particles with no round edges (mean eccentricity 0.65). The abundance was significantly and positively related to soil EC and TP. According to the findings, desertification processes increase the abundance of microplastic particles in soils and promote migration to deeper soil layers. Human activities, mainly grazing, may be the region's primary cause of desertification and microplastic pollution. Our findings provide new information on the diffusion of microplastics in drylands during desertification; these findings are critical for understanding and promoting dryland plastic pollution prevention and control.
英文关键词	Desertification Microplastics Soil physicochemical properties Microplastic migration Amu Darya-Aral Sea basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001105450800001
WOS关键词	ACCUMULATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397304
推荐引用方式 GB/T 7714	Zhang, Peng,Wang, Jin,Huang, Lei,et al. Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia[J],2023,348.
APA	Zhang, Peng.,Wang, Jin.,Huang, Lei.,He, Mingzhu.,Yang, Haotian.,...&Li, Xinrong.(2023).Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia.JOURNAL OF ENVIRONMENTAL MANAGEMENT,348.
MLA	Zhang, Peng,et al."Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia".JOURNAL OF ENVIRONMENTAL MANAGEMENT 348(2023).