干旱区生态环境知识资源中心(Arid): Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China

Arid

DOI	10.1016/j.catena.2020.105088
	Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China
	Jiang, Bao-Fu; Cui, Bu-li; Wang, Ying; Wang, Ya-Xuan; Li, Dong-sheng; Wang, Long-sheng; Li, Xiao-Yan
通讯作者	Cui, BL (corresponding author), Ludong Univ, Sch Resources & Environm Engn, 186 Hongqizhong St, Yantai 264025, Shandong, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	200
英文摘要	The vadose zone serves as a connection and transformation link between the atmosphere, plants, soil, surface water and groundwater. It is considered to be an important component of the geosphere and has sensitive interactions with the hydrosphere, biosphere, and atmosphere, which greatly impacts the environment and human health. This study was conducted in the Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China, and can provide references and guidance for research on the mechanisms governing the circulation and evolution of vadose-zone water in cold arid regions. Precipitation, dustfall, and vadose zone samples were collected to investigate transport in the vadose zone water using stable isotopes of hydrogen (delta H-2) and oxygen (delta O-18) as well as chloride as environmental tracers. The results showed that precipitation was the main source of chloride in the research area, accounting for 86.5% of total chloride deposition. The soil water in the vadose zone was mainly recharged by local precipitation. Strong evaporation occurred before the precipitation infiltrated and recharged soil water. The soil water, chloride content, and isotope values in the soil profile varied across different depths. The annual potential recharge from precipitation to the vadose zone soil water was 9.20 mm/yr, accounting for 2.17% of the local precipitation. The actual recharge from precipitation to groundwater was 26.29 mm/yr, accounting for 6.19% of the local precipitation. The infiltration recharge from preferential and piston flow accounted for 66.40% and 33.60% of the total infiltration recharge to groundwater, respectively, indicating that preferential flow was the main source of groundwater recharge in the studied grassland. The results of this study were compared with those of other relevant studies. The recharge mechanisms of the vadose zone soil water and groundwater varied between different regions and were controlled mainly by the spatiotemporal distribution of precipitation, topographic characteristics, and soil structure. These findings provide a reference and guidance for research on the circulation and evolution of vadose-zone water in the Qinghai Lake Basin and Qinghai-Tibet Plateau.
英文关键词	Vadose zone Water transport Stable-isotope tracing Achnatherum splendens grassland Qinghai Lake Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620777400002
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	北京师范大学 ; 中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349793
作者单位	[Jiang, Bao-Fu; Cui, Bu-li; Wang, Ying; Wang, Ya-Xuan; Li, Dong-sheng; Wang, Long-sheng] Ludong Univ, Sch Resources & Environm Engn, 186 Hongqizhong St, Yantai 264025, Shandong, Peoples R China; [Cui, Bu-li; Li, Xiao-Yan] Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, Beijing 100875, Peoples R China; [Cui, Bu-li] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Bao-Fu,Cui, Bu-li,Wang, Ying,et al. Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China[J]. 北京师范大学, 中国科学院地球环境研究所,2021,200.
APA	Jiang, Bao-Fu.,Cui, Bu-li.,Wang, Ying.,Wang, Ya-Xuan.,Li, Dong-sheng.,...&Li, Xiao-Yan.(2021).Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China.CATENA,200.
MLA	Jiang, Bao-Fu,et al."Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China".CATENA 200(2021).