Knowledge Management System Of Institute of Earth Environment, CAS
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 |
ISSN | 0341-8162 |
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 |
DOI | 10.1016/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 | |
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 |
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]. 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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