评估 Sidi Allal 地区的地下水质量并诊断硝酸盐污染：利用地下水污染指数的地理信息系统方法

IF 3.1 Q2 WATER RESOURCES

Hydrology Pub Date : 2023-12-01 DOI:10.3390/hydrology10120227

H. Al-Aizari, A. Ghfar, Ali R. Al-Aizari, Abdul-Jaleel M. Al-Aizari, M. S. Moshab, Mika Sillanpää

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引用次数: 0

摘要

地下水是各种人类活动的重要资源，但它面临着来自农业、工业和家庭的污染风险。本研究旨在利用地下水污染指数(GPI)对摩洛哥Sidi Allal地区的地下水进行评价，并对硝酸盐污染进行诊断。研究选取了研究区45口地下水井，在实验室检测了地下水的理化参数，如pH值、电导率、阳离子、阴离子等。利用地理信息系统(GIS)确定地下水水质参数的空间分布。测定了地下水污染指数和硝酸盐污染指数。采用逆距离加权法(IDW)绘制空间分布图。结果表明:计算得到的GPI值范围为0.856 ~ 7.416，平均值为2.06;约40%的地下水样本受到严重污染，不适合饮用。NPI值在- 0.74 ~ 10.5之间，平均值为5.1。根据NPI分类，约64%的地下水样品被认为是高污染的，这表明地下水不适合饮用。空间分布图显示，研究区中心地区适宜地下水的可得性和Esbou河和Nassour运河附近的不适宜地下水。本研究结果显示，研究区中部地下水样品中硝酸盐浓度较高，表明硝酸盐浓度的增加可能是由于农业活动和污水中大量使用氮肥造成的。

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Assessing Groundwater Quality and Diagnosing Nitrate Pollution in the Sidi Allal Region: A GIS-Based Approach Utilizing the Groundwater Pollution Index

Groundwater is a critical resource for various human activities, yet it faces contamination risks from agricultural, industrial, and domestic sources. This study aimed to evaluate groundwater in Morocco’s Sidi Allal region using the groundwater pollution index (GPI) and diagnose nitrate pollution. The study included 45 groundwater wells from the study area, and physicochemical parameters such as pH, electrical conductivity, cations, and anions were examined in the laboratory. The geographic information system (GIS) was used to determine the spatial distribution of groundwater quality parameters. The groundwater pollution index and nitrate pollution index (NPI) were determined. The inverse distance weighting method (IDW) was used to create a spatial distribution map. The results indicated that the calculated GPI values ranged from 0.856 to 7.416, with an average of 2.06. About 40% of groundwater samples were highly polluted and unsuitable for drinking. The NPI values ranged between −0.74 and 10.5, with an average of 5.1. About 64% of the total groundwater samples were considered highly polluted according to the NPI classification, suggesting that the groundwater was unsuitable for drinking purposes. The spatial distribution map revealed the availability of appropriate groundwater in the central area of the study area and inappropriate groundwater near the Esbou River and Nassour Canal. The findings of this study revealed high concentrations of nitrates in groundwater samples in the central part of the study area, indicating that this increase in nitrates may be due to intensive use of nitrogen fertilizers in agricultural activities and sewage waste.

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来源期刊

Hydrology Earth and Planetary Sciences-Earth-Surface Processes

CiteScore

4.90

自引率

21.90%

发文量

192

审稿时长

6 weeks

期刊介绍： Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences, including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology, hydrogeology and hydrogeophysics. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, ecohydrology, geomorphology, soil science, instrumentation and remote sensing, data and information sciences, civil and environmental engineering are within scope. Social science perspectives on hydrological problems such as resource and ecological economics, sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site. Studies focused on urban hydrological issues are included.