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Application of groundwater functional zoning to coastal groundwater management: a case study in the plain area of Weifang City, China

机译：地下水功能区划在沿海地下水管理中的应用-以潍坊平原地区为例

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As a useful index-based evaluation framework, groundwater functional zoning (GWFZ) presents a very positive effect on groundwater management at a regional scale due to its concise results. Currently, the GWFZ lacks definition and detailed processes, hence requiring a systematic structure to offer more knowledge bases to the methodology. A typical study area (Weifang City) characterized by a coastal zone and relying on groundwater supply, as well as the occurrence of groundwater-derived geo-environmental issues, was chosen. We provided a detailed index-based GWFZ method by focusing on the assessment of the resource supply function (RSF) and geo-environment stability function (GSF), with a good understanding of the hydrogeological conditions in the selected area. The RSF was assessed by delineating the potential area of groundwater exploitation, while the GSF was evaluated by identifying the vulnerability of geo-environmental issues. By integrating the RSF and GSF into the GIS environment, the study area was finally divided into five functional sub-areas: concentrated groundwater supply area (1.08%), decentralized groundwater supply area (18.36%), vulnerable geo-environment area (11.78%), unsuitable to exploit groundwater area (14.11%), and recharge protection area (54.67%). Seven groundwater exploitation boreholes in the plain area were validated to be unreasonable with regard to mining scale, which indicates a connection with the inland saltwater intrusion boundary in recent years. With simple data acquisition methods and concise results, GWFZ is of great benefit to groundwater management and can be further applied in other regional studies.
机译：作为一个有用的基于指标的评估框架，地下水功能区划（GWFZ）简洁明了，对区域性地下水管理产生了非常积极的影响。当前，全球自然基金会缺乏定义和详细的流程，因此需要系统的结构来为该方法提供更多的知识库。选择了一个典型的研究区（潍坊市），该研究区以沿海地区为特征，并依赖于地下水供应，并且发生了地下水源的地质环境问题。通过重点评估资源供应函数（RSF）和地质环境稳定性函数（GSF），我们提供了详细的基于索引的GWFZ方法，并且对所选区域的水文地质条件有很好的了解。通过划定地下水开采的潜在区域来评估RSF，而通过确定地质环境问题的脆弱性来评估GSF。通过将RSF和GSF集成到GIS环境中，最终将研究区域划分为五个功能子区域：集中地下水供应区域（1.08％），分散地下水供应区域（18.36％），脆弱的地球环境区域（11.78％） ），不适合开采地下水面积（14.11％）和补给保护面积（54.67％）。经验证，平原地区的七个地下水开采钻孔在采矿规模上是不合理的，这表明近年来与内陆盐水入侵边界有关。通过简单的数据采集方法和简洁的结果，GWFZ对地下水管理具有极大的好处，并可进一步应用于其他区域研究中。

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