Stable-isotope tracing of vadose-zone water transport in Achnatherum splendens grassland of the Qinghai Lake Basin, NE Qinghai-Tibet Plateau, China
Jiang, Bao-Fu1; Cui, Bu-li1,2,3; Wang, Ying1; Wang, Ya-Xuan1; Li, Dong-sheng1; Wang, Long-sheng1; Li, Xiao-Yan2
通讯作者Cui, Bu-li(cuibuli@163.com)
2021-05-01
发表期刊CATENA
ISSN0341-8162
卷号200页码:9
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.
关键词Vadose zone Water transport Stable-isotope tracing Achnatherum splendens grassland Qinghai Lake Basin
DOI10.1016/j.catena.2020.105088
收录类别SCI ; SCI
语种英语
资助项目National Natural Science Foundation of China[41730854] ; National Natural Science Foundation of China[41877157] ; National Natural Science Foundation of China[41530854] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG1904] ; Science and technology support plan for Youth Innovation of colleges and universities of Shandong[2019KJH009] ; Natural Science Foundation of Shandong Province[ZR2019MD040] ; Key Research and Development Plan of Shandong Province[2018GSF117021] ; Science and technology program of colleges and universities of Shandong[J17KA192] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2017-KF-15]
WOS研究方向Geology ; Agriculture ; Water Resources
项目资助者National Natural Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology ; Science and technology support plan for Youth Innovation of colleges and universities of Shandong ; Natural Science Foundation of Shandong Province ; Key Research and Development Plan of Shandong Province ; Science and technology program of colleges and universities of Shandong ; State Key Laboratory of Earth Surface Processes and Resource Ecology
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号WOS:000620777400002
出版者ELSEVIER
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/16122
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Cui, Bu-li
作者单位1.Ludong Univ, Sch Resources & Environm Engn, 186 Hongqizhong St, Yantai 264025, Shandong, Peoples R China
2.Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
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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]. CATENA,2021,200:9.
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,200,9.
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):9.
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