干旱区生态环境知识资源中心(Arid): Controlled and driving mechanism of the SPM variation of shallow Brackish Lakes in arid regions

Arid

DOI	10.1016/j.scitotenv.2023.163127
	Controlled and driving mechanism of the SPM variation of shallow Brackish Lakes in arid regions
	Liu, Changjiang; Zhang, Fei; Jim, Chi -Yung; Johnson, Verner Carl; Tan, Mou Leong; Shi, Jingchao; Lin, Xingwen
通讯作者	Zhang, F
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	878
英文摘要	Suspended particulate matter (SPM) in the brackish Ebinur Lake of arid northwest China profoundly affect its water quality and watershed habitat quality. However, the actual driving mechanisms of the Lake's SPM changes remain unclear. Therefore, the purpose of this study is to explore the controlling factors driving the variability of SPM in the Ebinur Lake. This study constructed month-by-month SPM maps of Ebinur Lake based on time-series remote-sensing imageries and SPM inversion model. Thirty-four factors that might influence SPM changes were extracted, and the Partial Least Squares Structural Equation Modeling (PLS-SEM), suitable for complex relationships and factor interactions, was applied to identify the relative influence of each factor quantitatively. The results showed: (1) a clear increasing trend of SPM concentration in Ebinur Lake from 2011 to 2020; (2) that SPM changes were influenced by external and internal factors, explaining 48.2 % and 46.9 % of the changes, respectively; (3) that, to the external factors, meteorological factors exerted the greatest influence on SPM (relative contribution of 38.9 %); that, to the internal factors, water salinity imposed the greatest influence on SPM (relative contribution of 43.3 %); (4) that, among the meteorological factors, the measured variable Alashankou wind speed expressed the most significant positive effect on SPM (weighting coefficient of 0.894), and sulfate generated the strongest positive effect on SPM (weighting coefficient of 0.791) among the water salinity factors. Hence, the quantitative identification of drivers of SPM changes in Ebinur Lake could provide anew perspective to investigate the driving mechanisms of lake water quality in arid areas and inform their sustainable restoration and management.
英文关键词	Arid region Brackish lake Suspended particulate matter Water quality Driving factors Structural equation modeling
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001058457800001
WOS关键词	SUSPENDED-SEDIMENT ; TEMPORAL VARIATION ; WATER-QUALITY ; VARIABILITY ; DYNAMICS ; LAND ; CLIMATE ; AREA
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/2XILL650/398522
推荐引用方式 GB/T 7714	Liu, Changjiang,Zhang, Fei,Jim, Chi -Yung,et al. Controlled and driving mechanism of the SPM variation of shallow Brackish Lakes in arid regions[J],2023,878.
APA	Liu, Changjiang.,Zhang, Fei.,Jim, Chi -Yung.,Johnson, Verner Carl.,Tan, Mou Leong.,...&Lin, Xingwen.(2023).Controlled and driving mechanism of the SPM variation of shallow Brackish Lakes in arid regions.SCIENCE OF THE TOTAL ENVIRONMENT,878.
MLA	Liu, Changjiang,et al."Controlled and driving mechanism of the SPM variation of shallow Brackish Lakes in arid regions".SCIENCE OF THE TOTAL ENVIRONMENT 878(2023).