干旱区生态环境知识资源中心(Arid): Occurrence of macroplastic debris in the long-term plastic film-mulched agricultural soil: A case study of Northwest China

Arid

DOI	10.1016/j.scitotenv.2022.154881
	Occurrence of macroplastic debris in the long-term plastic film-mulched agricultural soil: A case study of Northwest China
	Wang, Shuying; Fan, Tinglu; Cheng, Wanli; Wang, Lei; Zhao, Gang; Li, Shangzhong; Dang, Yi; Zhang, Jianjun
通讯作者	Fan, TL
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	831
英文摘要	Widespread presence of plastic mulch has led to macroplastic (MaP) pollution. While this issue is widely explored in aquatic ecosystems, MaP pollution on land has been neglected. In 2019, we conducted a large-scale survey of MaPs in Northwest China in 0-30 cm soil with long-term mulching. Samples of MaP debris were collected from 67 sites across Gansu, east Qinghai, and north Shannxi Provinces. All visible MaP pieces for each site were separated and weighed. The mass of each MaP piece was calibrated by size measured in digital images. The MaP mass averaged 47.2 kg ha(-1), and the number of MaPs averaged 266.2 pieces ha(-1). The mass and number of MaPs varied from site to site. The mean size of MaPs was 19.5 cm2 piece(-1) or 28.0 mg piece(-1). More importantly, the number of small MaP pieces (< 5 and 5-20 cm(2) piece(-1)) accounted for 76.7% of the total number of MaPs detected, and small-sized plastic debris (< 10 and 10-25 mg piece-1) were detected in 70.1% of the sampling sites. The percentage of small fragments increased before 15-year of mulching and then declined. However, the amount of medium-large debris (20-50 and > 50 cm(2) piece(-1)) showed a trend opposite to that of small fragments. The percentage of MaPs was greater in the small size group than in the medium-large size group. The arid to semi-arid area exhibited higher MaP contamination compared with the semi-arid to the semi-humid area. These observations indicate that plastic debris residing in soil tend to be fragmented, making plastic film recovery more challenging and causing severe soil pollution. Further studies are required to regulate plastic mulch methods and explore the degradation process.
英文关键词	Macroplastic debris Long-term film mulching Agriculture soil Northwest China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000793421200004
WOS关键词	GANSU PROVINCE ; POLLUTION ; MICROPLASTICS ; ACCUMULATION ; ENVIRONMENT ; MACRO ; OASIS
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/2XILL650/394371
推荐引用方式 GB/T 7714	Wang, Shuying,Fan, Tinglu,Cheng, Wanli,et al. Occurrence of macroplastic debris in the long-term plastic film-mulched agricultural soil: A case study of Northwest China[J],2022,831.
APA	Wang, Shuying.,Fan, Tinglu.,Cheng, Wanli.,Wang, Lei.,Zhao, Gang.,...&Zhang, Jianjun.(2022).Occurrence of macroplastic debris in the long-term plastic film-mulched agricultural soil: A case study of Northwest China.SCIENCE OF THE TOTAL ENVIRONMENT,831.
MLA	Wang, Shuying,et al."Occurrence of macroplastic debris in the long-term plastic film-mulched agricultural soil: A case study of Northwest China".SCIENCE OF THE TOTAL ENVIRONMENT 831(2022).