干旱区生态环境知识资源中心(Arid): Temporal and Spatial Effects of River Input on Dissolved Organic Matter Composition in Lake Bosten

Arid

DOI	10.3964/j.issn.1000-0593(2023)05-1636-09
	Temporal and Spatial Effects of River Input on Dissolved Organic Matter Composition in Lake Bosten
	Jiang Xin-tong; Xiao Qi-tao; Li Yi-min; Liao Yuan-shan; Liu Dong; Duan Hong-tao
通讯作者	Duan, HT
来源期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
出版年	2023
卷号	43 期号:5 页码:1636-1644
英文摘要	Lake Bosten is the largest inland throughput freshwater lake in the northwest arid zone of China. In recent years, the lake ecosystem and the drinking water safety of the surrounding residents have been seriously affected by the increase in human activities and wastewater discharge in the basin, and the impact of riverine input on the lake water quality needs to be focused on. In this study, the three-dimensional fluorescence spectra of coloured dissolved organic matter (CDOM) measured in summer and autumn were analysed in parallel. Three fractions of CDOM from Lake Bosten were identified: terrestrial humic fraction Cl tyrosine-like fraction C2 and tryptophan-like fraction C3. The effect of river input on the DOM of Lake Bosten was also analysed based on Pearson correlation. The results show that river input's influence on Lake Bosten's DOM differs between seasons and is directly related to the seasonal changes in river water quality. In summer, the water entering the lake from the Kaidu River mainly comes from winter snowmelt and carries a large amount of terrestrial humus into the lake, while in autumn, it is mainly glacial meltwater. The content of terrestrial humus is reduced as the flow into the lake increases, showing that the overall DOM concentration near the estuary is higher in summer and lower in autumn. The three components Cl, C2 and C3 were found to be more abundant in the western part of the lake where the Kaidu River and the Yellow Water Ditch enter the lake, and the three components were similarly affected by seasonality. The correlation between DOM and conductivity was also carried out at sampling points near the mouth of the Kaidu River and other areas. It was found that the influence of external river input on the DOM of Lake Bosten was mainly concentrated near the mouth of the river, and the relationship between DOC and CDOM in the area near the mouth of the river was significant so that the CDOM could be inferred by remote sensing before estimating the DOM content. The study of the influence of river inputs on the composition of dissolved organic matter in Lake Bosten in different seasons is of great importance to protect the lake's ecological environment and improve the lake's water quality.
英文关键词	Lake Bosten Dissolved organic matter Colored dissolved organic matter Spatiotemporal analysis Parallel factor analysis
类型	Article
语种	中文
收录类别	SCI-E
WOS记录号	WOS:001027826000041
WOS关键词	WATER
WOS类目	Spectroscopy
WOS研究方向	Spectroscopy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398714
推荐引用方式 GB/T 7714	Jiang Xin-tong,Xiao Qi-tao,Li Yi-min,et al. Temporal and Spatial Effects of River Input on Dissolved Organic Matter Composition in Lake Bosten[J],2023,43(5):1636-1644.
APA	Jiang Xin-tong,Xiao Qi-tao,Li Yi-min,Liao Yuan-shan,Liu Dong,&Duan Hong-tao.(2023).Temporal and Spatial Effects of River Input on Dissolved Organic Matter Composition in Lake Bosten.SPECTROSCOPY AND SPECTRAL ANALYSIS,43(5),1636-1644.
MLA	Jiang Xin-tong,et al."Temporal and Spatial Effects of River Input on Dissolved Organic Matter Composition in Lake Bosten".SPECTROSCOPY AND SPECTRAL ANALYSIS 43.5(2023):1636-1644.