Effect of Geological and Geomorphological Factors on Gotvand Dam Water Quality

IF 0.9 4区环境科学与生态学 Q4 WATER RESOURCES Water Resources Pub Date : 2023-11-24 DOI:10.1134/s0097807823600055

M. J. Sahebari

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Abstract

This research aimed to investigate the effect of geological and geomorphological factors on the water quality of Gotvand Dam in Iran. Given the role of geomorphological parameters in water quality, the water quality indices were analyzed in the Excel and Chemistry applications. Water quality was evaluated by analyzing water samples obtained from the Statistical Data Center of Water and Power Organization of Khuzestan, and the total dissolved solids (TDS), electrical conductivity (EC), and pH of water were measured using the Mann-Kendall test. Then the effect of geomorphological factors on the physicochemical properties of the Karun River was assessed. The qualitative variables were pH, EC, and TDS in the statistical period of 2006–2021. The results of the Mann-Kendall test showed an insignificant decreasing trend in the TDS series in the Gotvand station. Meanwhile, August had a significant increasing trend in TDS, and considering the calculated Sen’s slope, this parameter increased by 35% in the last 15 years (2006–2021). Like TDS, EC had both increasing and decreasing trends of changes. On the monthly scale, pH had a significant decreasing trend, meaning that the water is acidified, which severely affects the downstream fields and reservoirs. In the Gotvand station, the trend of changes in TDS and EC increased in 11 and 12 months of the year, respectively.

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地质地貌因素对戈地万坝水质的影响

摘要本研究旨在探讨地质地貌因素对伊朗戈特万大坝水质的影响。考虑到地貌参数对水质的影响，利用Excel软件和化学软件对水质指标进行了分析。采用Mann-Kendall法测定水的总溶解固形物(TDS)、电导率(EC)和pH值(pH)，并对胡泽斯坦水电组织统计数据中心采集的水样进行水质评价。在此基础上，评价了地貌因子对卡伦河理化性质的影响。定性变量为2006-2021年统计期的pH、EC和TDS。Mann-Kendall检验结果显示，Gotvand站TDS序列呈不显著的下降趋势。同时，8月份TDS有明显的上升趋势，考虑到计算的Sen 's斜率，该参数在近15年(2006-2021年)增加了35%。与TDS一样，EC也有增加和减少的变化趋势。在月尺度上，pH值有明显的下降趋势，说明水体酸化，严重影响下游油田和储层。在Gotvand站，TDS和EC的变化趋势分别在11个月和12个月呈上升趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Resources 环境科学-水资源

CiteScore

1.60

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Water Resources is a journal that publishes articles on the assessment of water resources, integrated water resource use, water quality, and environmental protection. The journal covers many areas of research, including prediction of variations in continental water resources and regime; hydrophysical, hydrodynamic, hydrochemical and hydrobiological processes, environmental aspects of water quality and protection; economic, social, and legal aspects of water-resource development; and experimental methods of studies.