Rate and historical change of direct recharge from precipitation constrained by unsaturated zone profiles of chloride and oxygen-18 in dry river bed of North China Plain
文献类型：期刊论文
| 作者 | Yuan Ruiqiang(袁瑞强) ; Song Xianfang ; Han Dongmei ; Zhang Yinghua ; Zhang Liang |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2011 |
| 期号 | DOI: 10.1002/hyp.8207 |
| 关键词 | direct recharge chloride mass balance stable isotope profile unsaturated zone North China Plain |
| 通讯作者 | Song Xianfang |
| 英文摘要 | Quantifying of direct recharge derived from precipitation is crucial for assessing sustainability of well-irrigated agriculture. In the North China Plain, the land use is dominated by groundwater-irrigated farmland where the direct recharge derived from precipitation and irrigation. To characterize the mean rate and historical variance of direct recharge derived from precipitation, unsaturated zone profiles of chloride and υ18O in the dry river bed of the Beiyishui River were employed. The results show that archival time scale of the profile covers the duration from 1980 to 2002 (corresponding to depths from 5 to 2 m) which is indicated by matching the υ18O peaks in the isotope profile with the aridity indexes gained by instrumental records of annual precipitation and annual potential evaporation. Using the chloride mass balance method, the mean rate of the direct recharge corresponding to the archival time scale is estimated to be 3Ð8 š 0Ð8 mm year 1, which accounts for about 0Ð7% of the long-term average annual precipitation. Further, the direct recharge rates vary from 2Ð1 to 6Ð8 mm year 1 since 1980. Despite the subhumid climate, the estimate of recharge rates is in line with other findings in semiarid regions. The low rate of direct recharge is considered as a result of the relative dry climate in recent decades. In dry river bed, unsaturated zone profiles of chloride and υ18O combined with instrumental records could offer valuable information about the direct recharge derived from precipitation during droughts. Copyright 2011 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-09-02 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/5482]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Yuan Ruiqiang,Song Xianfang,Han Dongmei,et al. Rate and historical change of direct recharge from precipitation constrained by unsaturated zone profiles of chloride and oxygen-18 in dry river bed of North China Plain[J]. HYDROLOGICAL PROCESSES,2011(DOI: 10.1002/hyp.8207). |
| APA | Yuan Ruiqiang,Song Xianfang,Han Dongmei,Zhang Yinghua,&Zhang Liang.(2011).Rate and historical change of direct recharge from precipitation constrained by unsaturated zone profiles of chloride and oxygen-18 in dry river bed of North China Plain.HYDROLOGICAL PROCESSES(DOI: 10.1002/hyp.8207). |
| MLA | Yuan Ruiqiang,et al."Rate and historical change of direct recharge from precipitation constrained by unsaturated zone profiles of chloride and oxygen-18 in dry river bed of North China Plain".HYDROLOGICAL PROCESSES .DOI: 10.1002/hyp.8207(2011). |
入库方式： OAI收割
来源：地理科学与资源研究所
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