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首页> 外文期刊>Environmental Monitoring and Assessment >Evaluating the suitability of urban groundwater resources for drinking water and irrigation purposes: an integrated approach in the Agro-Aversano area of Southern Italy
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Evaluating the suitability of urban groundwater resources for drinking water and irrigation purposes: an integrated approach in the Agro-Aversano area of Southern Italy

机译：评估城市地下水用于饮用水和灌溉的适宜性：意大利南部农业-阿韦尔萨诺地区的综合方法

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摘要

Deterioration of groundwater quality due to the introduction of pollutants from natural and anthropic sources has become a major environmental issue. We tested three methodologies in assessing groundwater quality and intrinsic aquifer vulnerability in the Agro-Aversano area (Southern Italy). A geographic information system (GIS)-based groundwater quality index (GQI) was realized to assess groundwater quality for drinking and irrigation use and, in parallel, standard SINTACS was applied to evaluate the intrinsic vulnerability of the aquifer. Nitrate concentrations and sodium absorption ratio (SAR) in groundwater samples were used to verify the reliability of vulnerability data. GQI analysis pointed to a general poor quality of groundwater both for drinking and irrigation use, especially in sub-urban areas. The spatial pattern of water quality from GQI analysis was positively related to nitrate and fluoride concentrations for drinking use and to bicarbonate and sodium concentrations for irrigation use, whose levels exceeded the WHO and FAO recommended thresholds, respectively. Standard SINTACS was found to be inadequate for describing the aquifer state, its results showing no correlation with nitrate concentration or SAR. Because of this inconsistency, we tested a novel approach combining GQI with SINTACS analysis. Results showed positive correlation with nitrate (r = 0.63) and SAR (r = 0.64) contents, thus pointing to combined SINTACS-GQI as a more reliable approach than standard methodologies.
机译：由于自然和人为来源的污染物的引入，导致地下水水质恶化已成为一个主要的环境问题。我们测试了三种方法来评估Agro-Aversano地区（意大利南部）的地下水质量和固有含水层脆弱性。实现了基于地理信息系统（GIS）的地下水质量指数（GQI）来评估饮用水和灌溉用水的地下水质量，同时，还使用标准SINTACS来评估含水层的内在脆弱性。地下水样品中的硝酸盐浓度和钠吸收率（SAR）用于验证脆弱性数据的可靠性。 GQI分析指出，饮用水和灌溉用水普遍质量较差，特别是在郊区。 GQI分析得出的水质空间格局与饮用硝酸盐和氟化物浓度以及灌溉用水中的碳酸氢盐和钠浓度呈正相关，其水平分别超过了WHO和FAO建议的阈值。发现标准SINTACS不足以描述含水层的状态，其结果表明与硝酸盐浓度或SAR无关。由于这种不一致，我们测试了一种将GQI与SINTACS分析相结合的新颖方法。结果显示与硝酸盐（r = 0.63）和SAR（r = 0.64）含量呈正相关，因此指出结合SINTACS-GQI作为比标准方法更可靠的方法。

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