干旱区生态环境知识资源中心(Arid): Impacts of chemical weathering and human perturbations on dissolved loads of the Wei River, the Yellow River catchment

Arid

DOI	10.1016/j.jhydrol.2021.126950
	Impacts of chemical weathering and human perturbations on dissolved loads of the Wei River, the Yellow River catchment
	Jia, Hui; Qu, Wengang; Ren, Wenhao; Qian, Hui
通讯作者	Qian, H (corresponding author), Changan Univ, Sch Water & Environm, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	603
英文摘要	As the largest tributary of the Yellow River, the Wei River drains a basin mainly comprising two different geological settings, i.e., the Chinese Loess Plateau (CLP) in the north covered by Quaternary loess and the Qinling Mountains area in the south. Exploring the influence of natural weathering processes and human activities on river chemistry has high significance in understanding chemical transport from the Wei River to the Yellow River. The geochemical characteristics of the Wei River mainstream and its tributaries as well as chemical weathering were determined using a geochemistry and isotope dataset of high spatial resolution. The mainstream clearly exhibited a mixture of major elements and stable isotopes from tributaries on both the north and south banks, with values within the range of those of the tributaries. North-bank tributaries draining thick loess deposits showed higher contents of major elements and the enrichment of stable isotopes, reflecting the influence of geological setting on river chemistry. The dominant processes accounting for the water chemistry of the mainstream are evaporite (39-75%) and carbonate weathering (21-54%). Within the watershed, evaporite dissolution and silicate weathering are higher in the northern CLP area, whereas carbonate weathering is higher in the southern Qinling Mountain area. The CO2 consumption by the Wei River is 19.9 x 10(9) mol/yr, accounting for 32.5% of the total CO2 consumption by the middle reaches of the Yellow River. During the high-flow period, the chemical weathering flux of the Wei River was found to be within the range of northern rivers in China, while the chemical weathering rate was relatively high in the semi-arid region. This suggests that chemical denudation is a significant factor for the river chemistry of the CLP at least in the high-flow period.
英文关键词	Chemical weathering Stable isotope CO2 consumption Qinling Mountains Chinese Loess Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706318300028
WOS关键词	MAJOR-ELEMENT CHEMISTRY ; LOESS PLATEAU ; WATER CHEMISTRY ; TRACE-ELEMENTS ; MIDDLE REACHES ; CLIMATE-CHANGE ; CHINA ; BASIN ; GEOCHEMISTRY ; QUALITY
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363932
作者单位	[Jia, Hui; Qu, Wengang; Ren, Wenhao; Qian, Hui] Changan Univ, Sch Water & Environm, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China; [Jia, Hui; Qu, Wengang; Ren, Wenhao; Qian, Hui] Changan Univ, Key Lab Subsurface Hydrol & Ecol Effect Arid Reg, Minist Educ, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Jia, Hui,Qu, Wengang,Ren, Wenhao,et al. Impacts of chemical weathering and human perturbations on dissolved loads of the Wei River, the Yellow River catchment[J],2021,603.
APA	Jia, Hui,Qu, Wengang,Ren, Wenhao,&Qian, Hui.(2021).Impacts of chemical weathering and human perturbations on dissolved loads of the Wei River, the Yellow River catchment.JOURNAL OF HYDROLOGY,603.
MLA	Jia, Hui,et al."Impacts of chemical weathering and human perturbations on dissolved loads of the Wei River, the Yellow River catchment".JOURNAL OF HYDROLOGY 603(2021).