气候变化领域集成服务门户(CCPortal): Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau

CCPortal

DOI	10.1016/j.scitotenv.2024.170300
	Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau
	Liu, Yixuan; Zhao, Shaoting; Wang, Dongzhi; Wang, Shichen; Ding, Xiaofan; Han, Kaiyang; Wang, Ruiying; Kou, Yuyang; Zhou, Guangqian; Shen, Weibo
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	916
卷号	916
英文摘要	Reservoirs are regarded as potential collection sites for microplastics (MPs), and ample water resources in plateau regions provide favorable natural conditions for hydroelectric power generation. However, research on the impact of cascade reservoir construction in the plateau region on the fate of MPs within the watershed is limited. In this study, the Yalong River, an alpine canyon river in the eastern Qinghai -Tibet Plateau, was selected as the research area. This study explored the distribution of MPs at various depths in water, sediment, and riverbank soil as well as the formation of MP communities within the river -cascade reservoir system. Furthermore, the effects of dam construction on MPs' migration in different environments were analyzed. The results revealed that the abundance of MPs in the water and sediment within the cascade reservoir area (CRA) was significantly higher than that in the river area (RA) (P < 0.001). Additionally, the trend of increasing MPs in water with decreasing altitude was notably slower in CRA. Regarding shape, the proportion of fibers in the water within the CRA was significantly lower than that in the RA, with a smaller vertical migration rate in the water than in the sediment. The proportion of MPs < 500 mu m in the water within the CRA was significantly higher than that in the RA. High -density MPs were notably deposited in the reservoir sediments. The analysis of the MP communities revealed that the construction of cascade dams led to relative geographical isolation between different sampling sites, reducing the similarity of MP communities in the CRA. This study established a theoretical foundation for understanding the impact of cascade dam construction on the fate characteristics of MPs and their potential risks in plateau areas.
英文关键词	Mountain Gorge River; River-cascade reservoir system; MP communities; MPs migration; Environmental risk
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001176281700001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289973
作者单位	Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Northwest A&F University - China; University of Jinan; Northwest A&F University - China; Northwest A&F University - China
推荐引用方式 GB/T 7714	Liu, Yixuan,Zhao, Shaoting,Wang, Dongzhi,et al. Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau[J],2024,916.
APA	Liu, Yixuan.,Zhao, Shaoting.,Wang, Dongzhi.,Wang, Shichen.,Ding, Xiaofan.,...&Shen, Weibo.(2024).Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,916.
MLA	Liu, Yixuan,et al."Environmental fate of microplastics in alpine and canyon-type river-cascade reservoir systems: Large-scale investigation of the Yalong River in the eastern Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 916(2024).