Mixing of event and pre-event water in a shallow Entisol in sloping farmland based on isotopic and hydrometric measurements, SW China
文献类型：期刊论文
| 作者 | Zhao, Pei1,2 ; Tang, Xiangyu2; Zhao, Peng3; Zhang, Wei2; Tang, Jialiang2
|
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2016-09-15 |
| 卷号 | 30期号:19页码:3478-3493 |
| 关键词 | stable isotopes preferential-flow percolation mechanism vadose zone flow generation |
| ISSN号 | 0885-6087 |
| 通讯作者 | Xiangyu Tang |
| 英文摘要 | Water percolation and flow processes in subsurface geologic media play an important role in determining the water source for plants and the transport of contaminants or nutrients, which is essential for water resource management and the development of measures for pollution mitigation. During June 2013, the dynamics of the rainwater, soil water, subsurface flows and groundwater in a shallow Entisol on sloping farmland were monitored using a hydrometric and isotopic approach. The results showed that effective mixing of rainwater and soil water occurred in hours. The rebound phenomenon of D profiles in soils showed that most isotope-depleted rainwater largely bypassed the soil matrix when the water saturation in the soil was high. Preferential-flow, which was the dominant water movement pattern in the vadose zone, occurred through the whole soil profile, and infrequent piston-flow was mainly found at 20-40cm in depth. The interflow in the soil layer, composed of 75.2% rainwater, was only generated when the soil profile had been saturated. Underflow in the fractured mudrock was the dominant flow type in this hillslope, and outflow was dominated by base flow (groundwater flow) with a mean contribution of 76.7%. The generation mechanism of underflow was groundwater ridging, which was superimposed upon preferential-flow composed mainly of rainwater. The quick mixing process of rainwater and soil water and the rapid movement of the mixture through preferential channels in the study soil, which shows a typical bimodal pore size distribution, can explain the prompt release of pre-event water in subsurface flow. Water sources of subsurface flows at peak discharge could be affected by the antecedent soil water content, rain characteristics and antecedent groundwater levels. Copyright (c) 2016 John Wiley & Sons, Ltd. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Water Resources |
| 研究领域[WOS] | Water Resources |
| 关键词[WOS] | HYDROGRAPH SEPARATION ; RUNOFF GENERATION ; STABLE-ISOTOPES ; SOIL-WATER ; STORMFLOW GENERATION ; PREFERENTIAL FLOW ; SOLUTE TRANSPORT ; STREAM-FLOW ; CATCHMENT ; HILLSLOPE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000383569200010 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18069]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Shangluo Univ, Coll Urban Rural Planning & Architectural Engn, Shangluo 726000, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Sichuan Univ, Coll Water Resource & Hydropower, Chengdu 610065, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Pei,Tang, Xiangyu,Zhao, Peng,et al. Mixing of event and pre-event water in a shallow Entisol in sloping farmland based on isotopic and hydrometric measurements, SW China[J]. HYDROLOGICAL PROCESSES,2016,30(19):3478-3493. |
| APA | Zhao, Pei,Tang, Xiangyu,Zhao, Peng,Zhang, Wei,&Tang, Jialiang.(2016).Mixing of event and pre-event water in a shallow Entisol in sloping farmland based on isotopic and hydrometric measurements, SW China.HYDROLOGICAL PROCESSES,30(19),3478-3493. |
| MLA | Zhao, Pei,et al."Mixing of event and pre-event water in a shallow Entisol in sloping farmland based on isotopic and hydrometric measurements, SW China".HYDROLOGICAL PROCESSES 30.19(2016):3478-3493. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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