| 人工示踪方法评价地下水入渗补给及其优先流程度——以河北栾城和衡水为例 |
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| 关键词:applied tracer groundwater recharge multi-region model preferential flow land utilization |
| 基金项目:国家“973”计划项目(编号: 2010CB428802)；国家自然科学基金项目(编号: 51279016; 41372243)；国家“十二五”科技支撑计划项目(编号: 2011BAB10B04) |
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| The Estimation of Groundwater Recharge and Preferential Flow Based on the Applied Tracers: A Case Study of Luancheng and Hengshui Areas in Hebei Province |
| The traditional method of the applied tracer for estimating the groundwater recharge according to the peak of tracer’s concentration in soil profile has encountered the problem of precision and application. Therefore, the multi-regions method was suggested in this paper to estimate the groundwater recharge using the applied tracers, i.e., bromide and tritium, on the conditions of different land utilizations and depths, in Luancheng and Hengshui areas of Hebei Province. The results showed that the groundwater recharges of Luancheng and Hengshui areas were 124.3 mm/a and 13.7 mm/a, respectively, and the percentages of preferential flow were 28.7% and 2.3%, respectively, which indicated that the results of the multi-regions method were more reasonable than the traditional method. Moreover, the straw mulch restrained the infiltration of precipitation or irrigation, and reduced the preferential flow. However, the plants, i.e., corn, wheat, and grass, improved the preferential flow. The groundwater recharge and preferential flow which were controlled by the soil structure showed no clear relationship with injected depths. |
| WU Qing-hua,ZHANG Wei,LIN Wen-jing,ZHANG Fa-wang,WANG Gui-ling.2014.The Estimation of Groundwater Recharge and Preferential Flow Based on the Applied Tracers: A Case Study of Luancheng and Hengshui Areas in Hebei Province[J].Acta Geoscientica Sinica,35(4):495-502. |
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