干旱区生态环境知识资源中心(Arid): Temporal Variations of Sediment Provenance in a Karst Watershed, China

Arid

DOI	10.3390/app13020771
	Temporal Variations of Sediment Provenance in a Karst Watershed, China
	Tian, Mi; Wang, Xueqiu; Qiao, Yu; Liu, Dongsheng; Chi, Qinghua; Liu, Hanliang; Wang, Wei; Zhang, Baoyun
通讯作者	Wang, XQ
来源期刊	APPLIED SCIENCES-BASEL
EISSN	2076-3417
出版年	2023
卷号	13 期号:2
英文摘要	The environmental quality of the sediments in karst areas is a common concern, and it is of great significance to analyze the sources of the sediments. This study investigates the sources and its temporal variations of catchment sediments in a typical small karst watershed area. Toxic metal concentrations in the catchment area were monitored via three geochemical baseline projects in China. The sediment identification fingerprint tool (SIFT) was used to establish a geochemical model for tracing the main source contributions and its temporal variations of catchment sediments over the past 28 years (1992-2019). The catchment sediments in the small karst catchment area were mainly sourced from the background lithologies, among which limestone contributed the most, followed by dolomite, sand-shale, and mudstone; however, the anthropogenic lead-zinc tailings contributed the least. The contributions and temporal variations of each source were closely related to the lithology, topography, and landform, as well as the change in land-use and vegetation cover and the degree of rocky desertification. Moreover, the implementation of vegetation restoration and control of rocky desertification decreased the contributions of the upstream geological bodies, and the toxic metal content of the catchment sediment decreased accordingly. This study is of great significance for environmental governance in karst areas.
英文关键词	Karst catchment sediment geochemical tracing toxic metal pollution temporal variations
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000916899100001
WOS关键词	TRACE-ELEMENTS ; CATCHMENT ; IMPACT ; AREAS
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395357
推荐引用方式 GB/T 7714	Tian, Mi,Wang, Xueqiu,Qiao, Yu,et al. Temporal Variations of Sediment Provenance in a Karst Watershed, China[J],2023,13(2).
APA	Tian, Mi.,Wang, Xueqiu.,Qiao, Yu.,Liu, Dongsheng.,Chi, Qinghua.,...&Zhang, Baoyun.(2023).Temporal Variations of Sediment Provenance in a Karst Watershed, China.APPLIED SCIENCES-BASEL,13(2).
MLA	Tian, Mi,et al."Temporal Variations of Sediment Provenance in a Karst Watershed, China".APPLIED SCIENCES-BASEL 13.2(2023).