Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1051/e3sconf/20199812007 |
The role of unsaturated zone in estimating groundwater recharge in arid and semiarid areas as depicted by geochemical tracers | |
Huang, Tianming; Ma, Baoqiang; Long, Yin; Pang, Zhonghe | |
通讯作者 | Huang, TM (corresponding author), Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China. ; Huang, TM (corresponding author), Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China. |
会议名称 | 16th International Symposium on Water-Rock Interaction (WRI) / 13th International Symposium on Applied Isotope Geochemistry / 1st IAGC International Conference |
会议日期 | JUL 21-26, 2019 |
会议地点 | Tomsk, RUSSIA |
英文摘要 | In arid and semiarid area, the recharge rate is relatively limited and the unsaturated zone (UZ) is commonly thick. The moisture in the UZ may represent the water infiltrating from precipitation during the past decades to thousands of years. Therefore, the multiple geochemical tracers in soil moisture, including Cl (chloride mass balance), 3H (tritium peak displacement), NO3, H-2, O-18, can be used to estimate diffuse recharge rate and related recharge characteristics. Based on 45 UZ profiles with maximum depth of 62 m in the Ordos Basin in NW China, a typical arid and semiarid area, we has used multiple geochemical tracers to study the following recharge informations: (1) reconstruction of groundwater recharge history, (2) determination of groundwater recharge mechanism, and (3) assessment of impact of vegetation changes on groundwater recharge. The results show that the soil texture (epically the shallow soil), vegetation and precipitation mainly control the recharge rate. This study also found that shallow groundwater in arid and semiarid areas is often not in equilibrium with near-surface boundary conditions. To estimate present recharge information, the UZ must be considered. The whole recharge process from precipitation to groundwater cannot be well understood unless the UZ have been included in arid and semiarid areas. |
来源出版物 | 16TH INTERNATIONAL SYMPOSIUM ON WATER-ROCK INTERACTION (WRI-16) AND 13TH INTERNATIONAL SYMPOSIUM ON APPLIED ISOTOPE GEOCHEMISTRY (1ST IAGC INTERNATIONAL CONFERENCE) |
ISSN | 2267-1242 |
出版年 | 2019 |
卷号 | 98 |
出版者 | E D P SCIENCES |
类型 | Proceedings Paper |
语种 | 英语 |
开放获取类型 | gold, Green Published |
收录类别 | CPCI-S |
WOS记录号 | WOS:000503479200226 |
WOS关键词 | PROFILE |
WOS类目 | Geochemistry & Geophysics ; Engineering, Petroleum ; Environmental Sciences ; Geology ; Water Resources |
WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Environmental Sciences & Ecology ; Geology ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/370155 |
作者单位 | [Huang, Tianming; Ma, Baoqiang; Long, Yin; Pang, Zhonghe] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China; [Huang, Tianming; Long, Yin; Pang, Zhonghe] Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China; [Ma, Baoqiang] China Univ Min & Technol, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Tianming,Ma, Baoqiang,Long, Yin,et al. The role of unsaturated zone in estimating groundwater recharge in arid and semiarid areas as depicted by geochemical tracers[C]:E D P SCIENCES,2019. |
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