| 地下水更新能力评价指标问题刍议——更新周期和补给速率的适用性 |
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| 引用本文： | 翟远征,王金生,滕彦国,左锐.地下水更新能力评价指标问题刍议——更新周期和补给速率的适用性[J].水科学进展,2013,24(1):56-61. |
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| 作者姓名： | 翟远征 王金生 滕彦国 左锐 |
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| 作者单位： | 1.北京师范大学水科学研究院, 北京 100875; |
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| 基金项目： | 北京市重大科技计划项目(D07050601510000)~~ |
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| 摘 要： | 地下水更新能力是近些年地下水科学与工程领域的一个研究热点,其定义目前尚未统一,评价指标也较多,其中较常用的有地下水更新周期、补给速率、年龄和滞留时间等。尽管这些参数间大都存在一定的数量关系,但由于它们代表的物理意义不同,所以得到的地下水更新能力的结论也会不同。以北京市平原区地下水为例验证了这种不同,并对更新周期和补给速率这两个存在密切数量关系的参数作为地下水更新能力评价指标的适用性进行了对比分析。结果表明:① 分别用更新周期和补给速率作为评价指标,得到的各地区(北京市平原区各区、县)之间地下水更新能力相对强弱的结论是不同的;② 与更新周期相比,由补给速率得到的评价结论具有较好的稳定性;③ 在作为地下水更新能力评价指标时,补给速率比更新周期具有更重要的实际意义。
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| 关 键 词： | 地下水更新能力 更新周期 补给速率 北京 |
| 收稿时间： | 2012-02-01 |
Humble opinion on assessment indices for groundwater renewability:Applicability of renewal period and recharge rate |
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| ZHAI Yuanzheng,WANG Jinsheng,TENG Yanguo,ZUO Rui.Humble opinion on assessment indices for groundwater renewability:Applicability of renewal period and recharge rate[J].Advances in Water Science,2013,24(1):56-61. |
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| Authors: | ZHAI Yuanzheng WANG Jinsheng TENG Yanguo ZUO Rui |
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| Affiliation: | 1.College of Water Sciences, Beijing Normal University, Beijing 100875, China;2.Engineering Research Center for Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China |
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| Abstract: | The renewability of groundwater has been a hot topic in the field of groundwater science and engineering in recent years. However, the definition of groundwater renewability has not been uniform, and the assessment indices are also relatively diverse, of which the groundwater renewal period, recharge rate, age and residence time are commonly used. The assessment results of groundwater renewability on the basis of those indices are usually inconsistence with each other. This is because different physical characteristics are considered in the establishment of those indices, though close relationships do exist between them. Based on a case study from Beijing, a comparison is done on the applicability of two closely related indices (renewal period and recharge rate) for assessing the groundwater renewability. The results show that: ① the different conclusions could be reached for the relative strength of groundwater renewability in Beijing's districts and counties depending on the assessment indices used; ② the conclusion with the groundwater recharge rate seems to be more stable compared to the other one; ③ the groundwater recharge rate has more important practical significance being an assessment index for groundwater renewability. |
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| Keywords: | groundwater renewability renewal period recharge rate Beijing |
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