干旱区生态环境知识资源中心(Arid): Sediment Routing and Anthropogenic Impact in the Huanghe River Catchment, China: An Investigation Using Nd Isotopes of River Sediments

Arid

DOI	10.1029/2020WR028444
	Sediment Routing and Anthropogenic Impact in the Huanghe River Catchment, China: An Investigation Using Nd Isotopes of River Sediments
	Guo, Yulong; Li, Chao; Wang, Chenyu; Xu, Juan; Jin, Chenyang; Yang, Shouye
通讯作者	Yang, SY (corresponding author), Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2021
卷号	57 期号:9
英文摘要	The Huanghe once had a sediment flux of >1,000 Mt/yr, but this has decreased by similar to 90% as its river sediment routing systems have undergone dramatic changes influenced by human activities such as dam construction. However, the way in which the sediment geochemistry of the river has responded to the altered sediment routing processes is not well known. This study investigates the sediment source-to-sink routing regime of the Huanghe River using Nd isotope fingerprinting. Four major source terranes, namely the Songpan-Ganzi (SG) Block, Ordos Desert (OD), Chinese Loess Plateau (CLP) and North China Craton (NCC) are recognized according to their distinct Nd isotopes. The gradual downstream decrease in epsilon Nd values in sediments of the upper Huanghe indicates a decreasing contribution of material from the SG Block and a corresponding increase contribution of local underlying basement rocks, which is inferred to be related to sediment capture by a cascade of hydroelectric dams. A gradual increase in epsilon Nd from Yinchuan to Tongguan suggests an increasing contribution from the CLP under intense erosion. Relatively low epsilon Nd in the downstream sediments suggest a contribution from proximal NCC basement, consistent with the shift from deposition to erosion in the lower channel in recent years. The marked heterogeneity in Nd isotopes in the Huanghe sediments corresponds well to sediment source-to-sink processes in response to increasing human impacts. In a setting of global rivers facing strong anthropogenic impacts, the ways in which altered sediment routing systems affect river sediment geochemistry deserve more research attention.
英文关键词	Huanghe River human impact Nd isotopes provenance sediment routing system
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000703704400040
WOS关键词	YELLOW-RIVER ; LOESS PLATEAU ; NEODYMIUM ISOTOPES ; EOLIAN DEPOSITS ; CLIMATE-CHANGE ; PROVENANCE ; SR ; GEOCHEMISTRY ; CONSTRAINTS ; EVOLUTION
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364872
作者单位	[Guo, Yulong; Li, Chao; Wang, Chenyu; Xu, Juan; Jin, Chenyang; Yang, Shouye] Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China; [Wang, Chenyu] Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Earth Surface Geochem, Potsdam, Germany
推荐引用方式 GB/T 7714	Guo, Yulong,Li, Chao,Wang, Chenyu,et al. Sediment Routing and Anthropogenic Impact in the Huanghe River Catchment, China: An Investigation Using Nd Isotopes of River Sediments[J],2021,57(9).
APA	Guo, Yulong,Li, Chao,Wang, Chenyu,Xu, Juan,Jin, Chenyang,&Yang, Shouye.(2021).Sediment Routing and Anthropogenic Impact in the Huanghe River Catchment, China: An Investigation Using Nd Isotopes of River Sediments.WATER RESOURCES RESEARCH,57(9).
MLA	Guo, Yulong,et al."Sediment Routing and Anthropogenic Impact in the Huanghe River Catchment, China: An Investigation Using Nd Isotopes of River Sediments".WATER RESOURCES RESEARCH 57.9(2021).