پهنه‌بندی مکانی شاخص کیفی آبخوان شمال شرقی دشت بیجار و مقایسۀ کیفیت آب با روش‌های مختلف

نوع مقاله : پژوهشی

نویسندگان

1 دانشیار، دانشکدۀ علوم طبیعی، دانشگاه تبریز

2 دانش‌آموختۀ کارشناسی ارشد هیدروژئولوژی، دانشکدۀ علوم طبیعی، دانشگاه تبریز

3 دانشجوی دکتری هیدروژئولوژی، دانشکدۀ علوم طبیعی، دانشگاه تبریز

چکیده

با توجه به اینکه کیفیت آب شرب در سلامتی انسان‏ها نقش مهمی دارد، باید کیفیت آب آبخوان‏ها به‏عنوان اصلی‏ترین منبع تأمین آب شرب تجزیه‏وتحلیل شود. هدف از مطالعۀ حاضر، بررسی کیفیت آب‏های زیرزمینی استفاده‌شده برای شرب در شمال شرقی دشت بیجار با شاخص GQI با استفاده از نرم‏افزار ArcGIS است. محدودۀ مطالعاتی آبخوان دشت بیجار یکی از آبخوان‏های استان کردستان است که منبع آب شرب قسمتی از شهر بیجار و بیش از 12 روستا را تأمین می‏کند. شاخص کیفیت آب شرب با استفاده از چهار روش GQI، GQI-GA، GQI-FL-GA و GQI-FG برای این آبخوان تهیه شده و سپس، به‏منظور صحت‌سنجی و مقایسۀ نتایج چهار روش یادشده از ضریب همبستگی (r) و جذر میانگین مربعات خطا (RMSE) استفاده شد. بر اساس نتایج به‏دست‏آمده، روش GQI-FL- GA با ضریب همبستگی 89/0 و RMSE 01/0 بهترین نتایج و روش GQI-FG با ضریب همبستگی 86/0 و RMSE 11/ 0 ضعیف‏ترین نتایج را ارائه دادند. بر اساس روش شاخص کیفی آب 2/91 درصد از دشت کیفیت مناسب داشته و 8/8 درصد باقی منطقه که بیشتر بخش‏های شمال شرقی (خروجی دشت) بوده و کیفیت قابل قبول دارد.

کلیدواژه‌ها

عنوان مقاله [English]

Spatial Mapping of Northeast Bijar Plain Aquifer Quality Index and Comparison of Water Quality Using Different Methods

نویسندگان [English]

  • Ata Allah Nadiri 1
  • Saleh Taheri Zangi 2
  • Nasser Jabraili Andaryan 3
1 Associate Professor, Faculty of Natural Sciences, University of Tabriz
2 Master of Science of Hydrogeology, Faculty of Natural Sciences, University of Tabriz
3 PhD Student in Hydrogeology, Faculty of Natural Sciences, University of Tabriz
چکیده [English]

Considering the quality of drinking water has an important role in human health, so the quality of aquifers as the main source of drinking water supply should be analyzed. The purpose of this study is to investigate the quality of groundwater used for drinking in the northeast of Bijar plain with GQI index using ArcGIS software. Study area of Bijar plain aquifer is one of the aquifers in the Kurdistan province that provides a drinking water source in a part of Bijar city and more than 12 villages. Drinking water quality index used four methods GQI, GQI-GA, GQI-FL-GA and GQI-FG was prepared for this aquifer and then in order to validate and compare the results of the four methods of correlation coefficient (r) and root mean square Error (RMSE) were used. Based on the obtained results, GQI-FL-GA method with correlation coefficient of 0.89 and RMSE 0.01 showed the best results and GQI-FG method with correlation coefficient of 0.86 and RMSE 0.11 presented the weakest results. According to the water quality index method, 91.2 percent of the plain has suiteble good quality and the remaining 8.8 percent of the region, which is mostly the northeastern parts (plain output) has acceptable quality.

کلیدواژه‌ها [English]

  • Bijar Plain
  • Fuzzy
  • Genetic algoritm
  • Water Quality Index

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اکوهیدرولوژی
دوره 8، شماره 1
فروردین 1400
صفحه 235-247

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سابقه مقاله

  • تاریخ دریافت: 04 آذر 1399
  • تاریخ بازنگری: 05 اسفند 1399
  • تاریخ پذیرش: 05 اسفند 1399

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