Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41302179 |
| 半干旱区强烈开采层地下水面状补给机理研究-以潮白河冲积扇为例 | |
| 翟远征 | |
| 主持机构 | 北京师范大学 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 270000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Diffuse recharge is not only an important source of groundwater, but also has great impacts on pollutant transport in the unsaturated zone. However, it is not entirely clear about the mechanism of the vertical diffuse recharge of groundwater and very difficult to quantify the recharge, especially those in the strongly exploited area, because of the highly complexity and uncertainty of the recharge processes and their impact factors. It is very important to reveal the mechanism of vertical diffuse recharge and quantify the recharge rate of groundwater in the strongly exploited area, because it is usually the vital water source and protection zone of groundwater pollution. The project intends to select the typical profiles of the Chaobai River Alluvial Fan in Beijing of China as an example, to study (1) the hydrological process and hydrogeochemical process of diffuse recharge of groundwater successively through the soil water zone→ transitional zone→ capillary water zone→ groundwater tabel; (2) changes and relationships of hydrochemical and environmental isotope tracers of unsaturated water and groundwater near the disturbed belt of the groundwater table and the recharge mechanism indicated by them; (3) the retard mechanism of recharge and the recharge rate of groundwater, based on the hydrochemical (TDS, Cl-, NO3-, et al.) and environmental (2H, 18O, 3H, 87Sr/86Sr, et al.) methods/tracing techniques, which combine the unsaturated zone and saturated zone as a whole system. This study is very important to understand the recharge mechanism, the transport process of pollutant, and the recharge rate of groundwater in the strongly exploited aquifer in the semiarid area with deep groundwater table. |
| 中文关键词 | 水文地球化学 ; 环境同位素 ; 地下水 ; 面状补给 ; 补给机理 |
| 来源机构 | 北京师范大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346630 |
| 推荐引用方式 GB/T 7714 | 翟远征.半干旱区强烈开采层地下水面状补给机理研究-以潮白河冲积扇为例.2014. |
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