Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/clen.201500718 |
Isotopic Implications for Vapor-Liquid Infiltration Pattern in the Desert Area of Ordos Plateau, China | |
Ma, Hongyun1; Yang, Qingchun2; Yin, Lihe1; Huang, Jinting1; Zhang, Jun1; Wang, Xiaoyong1; Li, Chengzhu1 | |
通讯作者 | Yang, Qingchun |
来源期刊 | CLEAN-SOIL AIR WATER
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ISSN | 1863-0650 |
EISSN | 1863-0669 |
出版年 | 2017 |
卷号 | 45期号:5 |
英文摘要 | Precipitation infiltration is the unique recharge source of groundwater in most arid areas. In this paper, we focus on the desert area of the Ordos Plateau by assessing the capability of water stable isotope analysis (delta D-delta O-18) to refine the understanding of groundwater recharge mechanism. In situ profile monitoring of temperature, moisture content, and isotopic sampling in unsaturated and saturated zones was conducted at the Bulanghe station located in the middle of the Ordos Plateau to identify the detailed infiltration process. It was found that the capillary zone has the most depleted heavy O and H isotopes in the profile. The analysis of delta D-delta O-18 relationships of local precipitation explains the isotopic variability and indicates the following processes: (1) Liquid water evaporated at hotter layer near the surface; 2) Part of vapor moves downward and condensates at the deeper layer where it becomes cooler. The isotopic fractionation that occurs in this process makes the condensation zone the most depleted heavy O and H isotopes zone. Temperature and moisture content in the profile also supported the capillary zone as vapor moves downward. The isotopic evidence indicates that, except for direct infiltration, the newly found secondary infiltration pattern, vapor-liquid flow, makes it possible that the low intensity precipitation event contributes to groundwater recharge. The results from this study may provide useful insights into the identification of infiltration mechanism in arid areas in the world. |
英文关键词 | Arid areas Downward moving vapor Groundwater recharge Infiltration mechanisms Water stable isotope |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000403007400009 |
WOS关键词 | WATER-VAPOR ; EVAPORATION ; SOIL ; MECHANISMS ; DIFFUSION ; MODELS ; FLOW |
WOS类目 | Green & Sustainable Science & Technology ; Environmental Sciences ; Marine & Freshwater Biology ; Water Resources |
WOS研究方向 | Science & Technology - Other Topics ; 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/2XILL650/198123 |
作者单位 | 1.CGS, Xian Ctr Geol Survey, Key Lab Groundwater & Ecol Arid & Semiarid Areas, Xian, Peoples R China; 2.Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun 130021, Peoples R China |
推荐引用方式 GB/T 7714 | Ma, Hongyun,Yang, Qingchun,Yin, Lihe,et al. Isotopic Implications for Vapor-Liquid Infiltration Pattern in the Desert Area of Ordos Plateau, China[J],2017,45(5). |
APA | Ma, Hongyun.,Yang, Qingchun.,Yin, Lihe.,Huang, Jinting.,Zhang, Jun.,...&Li, Chengzhu.(2017).Isotopic Implications for Vapor-Liquid Infiltration Pattern in the Desert Area of Ordos Plateau, China.CLEAN-SOIL AIR WATER,45(5). |
MLA | Ma, Hongyun,et al."Isotopic Implications for Vapor-Liquid Infiltration Pattern in the Desert Area of Ordos Plateau, China".CLEAN-SOIL AIR WATER 45.5(2017). |
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