مطالعه تشابه و خوشه‌بندی آب زیرزمینی مصرفی فضای سبز شهر اصفهان و بررسی تغییرات کیفیت آن در یک دهه

نوع مقاله: یاداشت‌ فنی

نویسندگان

1 دانشیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

2 دانشجوی کارشناسی ارشد مهندسی منابع طبیعی (بیابانزدایی)، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان

چکیده

به‌منظور طبقه‌بندی و بررسی کیفی آب زیرزمینی مصرفی فضای سبز شهر اصفهان، تعداد 10 چاه آبیاری در امتداد خیابان چهارباغ و حاشیه زاینده‌رود انتخاب شد. نمونه‌برداری به‌صورت ماهانه انجام گرفت و نتایج آنالیز به‌صورت میانگین فصلی مورد تحلیل قرار گرفت. آنالیزهای مختلفی نظیر pH، EC، +Na، -Cl،  HCO3-و Fe2+ طبق روشهای استاندارد انجام شد و نتایج حاصل با استفاده از نرم‌افزارSurfer به‌صورت خطوط هم‌مقدار ترسیم شد. همچنین با استفاده از نرم‌افزارهای آماری بر اساس تشابه موجود بین کیفیت آب چاههای مختلف، طبقه‌بندی فصلی چاهها صورت گرفت. نتایج نشان داد به‌دلیل تخلیه فاضلابهای صنعتی و شهری و کودهای شیمیایی، کیفیت آب برخی از چاهها وضعیت نامطلوبی دارند. همچنین بررسی روند تغییرات کیفیت آب در طی یک دهه یعنی از سال 1374 تا سال 1383 حاکی از کاهش کیفیت آب آبیاری و افزایش میزان محدودیتها برای مصرف فضای سبز بود.

کلیدواژه‌ها


عنوان مقاله [English]

Clustering of Groundwater Used in Isfahan Landscape Irrigation and Their Qualititative Changes Over one Decade

نویسندگان [English]

  • Jahangir Abedi Koupai 1
  • Amir Hossein Ghareh Sheikhloo 2
  • Zahra Khosravani Shiri 2
1 . Assoc. Prof. of Irrigation, College of Agriculture, Isfahan University of Technology
2 Grad. Student of Desertification Control, College of Natural Resources, Isfahan University of Tech.
چکیده [English]

Ten irrigation wells were selected along Chaharbagh Street and the Zayandehrood River bank to investigate and classify the groundwaters used for irrigating Isfahan landscape for their quality. Monthly sampling was performed and the results of the quality tests were used as seasonal averages. Different measurements such as pH, EC, Na+, C1-, HCO3-, Fe+2 were made according to standard methods and the Surfer program was used and the results were represented as isolines. Also seasonal classification of wells was performed based on similarities found among the water quality of the wells using statistical programs. Results revealed the poor quality of water from some of the study wells due to the discharge of urban and industrial wastewaters, chemical manure, etc. Besides, investigation of changes in water quality indicated the declining irrigation water quality and the increasing availability of water for landscape irrigation.

کلیدواژه‌ها [English]

  • Groundwater
  • Water Quality
  • Clustering
  • Isfahan
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