Groundwater recharge: The intersection between humanity and hydrogeology
Groundwater recharge: The intersection between humanity and hydrogeology
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DOI：
10.1016/j.jhydrol.2017.10.075
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发表时间：
2017-12
影响因子：
6.4
通讯作者：
B. Smerdon;J. Drewes
中科院分区：
文献类型：
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作者：
B. Smerdon;J. Drewes
地下水补给是地下水循环的一个重要组成部分，也是持续时间从几天到几千年不等的地下水流系统的开端。在全球范围内，越来越多的证据表明，地球的许多含水层含有12,000多年前重新注入的“化石”地下水（Jasechko等人，2017年），以及在过去50年内补给的非常小一部分地下水（Gleeson et al.，2015年）的报告。总之，这些信息表明地下水循环在地球内部的不规则分布以及补充含水层系统的补给条件的广泛变化（Befus等人，2017年）。需要了解地下水补给率和分布情况，以评价和调节水资源的数量和质量，了解景观使用的后果，确定有管理的含水层补给可在何处增加供应，并预测地下水系统将如何应对气候变化。反过来，这些主题对人类和生态系统的健康以及粮食和能源安全至关重要。然而，尽管具有全球重要性，但量化地下水补给仍然具有挑战性，因为它不能直接测量，并且存在与所有当前已知的估计方法相关的不确定性（Scanlon等人，2002).这个关于“含水层补给：建模，实验和气候变化效应”的特刊通过不同的估计方法和建模方法探讨了补给过程。《特刊》中的一些文章介绍了估计自然发生的地下水补给的技术，以更好地了解一个过程或特定区域，这有助于了解地球地下水的变化，并为更好地管理水资源作出明智的选择。特刊的其他文章研究了人为发生的地下水补给，以增加供水或改善水质。许多研究都考虑到了气候变化问题，因此，补给估算方法的不确定性与未来气候条件的不确定性交织在一起。最近，城市化和地下水补给方面越来越受到关注，特别是随着社会接受以前土地使用选择的遗产并为未来作出规划。这期特刊汇集了18篇文章，提供了一个关于地下水补给的当前思考的视角。
Groundwater recharge is an essential part of subsurface water circulation and the beginning of groundwater flow systems that can vary in duration from days to millennia. Globally, there is a growing body of evidence suggesting that many of Earth’s aquifers contain ‘fossil’groundwater that was recharged more than 12,000 years ago (Jasechko et al., 2017), and a very small portion of groundwater that was recharged within the last 50 years (Gleeson et al., 2015). Together, this information demonstrates the irregular distribution of groundwater circulation within the Earth and the wide variability of recharge conditions that replenish aquifer systems (Befus et al., 2017). Knowledge of groundwater recharge rates and distribution are needed for evaluating and regulating the quantity and quality of water resources, understanding consequences of landscapes use, identifying where managed aquifer recharge can augment supply, and predicting how groundwater systems will respond to a changing climate. In-turn, these topics are of central importance for the health of humans and ecosystems, and security of food and energy. Yet, despite the global importance, quantifying groundwater recharge remains challenging as it cannot be measured directly, and there is uncertainty associated with all currently known estimation methods (Scanlon et al., 2002).This Special Issue on ‘Aquifers Recharge: Modeling, Experiments and Climatic Change Effects’ explores the recharge process through different estimation methods and approaches to modeling. Some of the articles in the Special Issue describe techniques for estimating naturally occurring groundwater recharge to better understand a process or particular region, which help learn about the variability of Earth’s groundwater and make informed choices for better management of water resources. Other articles of the Special Issue examine artificially occurring groundwater recharge to augment water supply, or improve water quality. The aspect of climate change is incorporated in many of the studies, whereby uncertainty of recharge estimation methods is compounded with uncertainty of future climate conditions. The aspect of urbanization and groundwater recharge is gaining more attention recently, especially as societies accept the legacy of previous land use choices and plan for the future. This Special Issue brings together 18 articles that offer a perspective of the current thinking about groundwater recharge.