ارائه شاخص نوین آلودگی و خطر بوم شناسی آب‌های زیرزمینی (PERG)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

2 استاد، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

3 دانشیار، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

چکیده

با توجه به جمعیت رو به افزایش جهان به‌خصوص در کشورهایی که با محدودیت منابع آب مواجه‏اند، بررسی و کنترل کمیت و کیفیت منابع آب، به‌ویژه منابع آب زیرزمینی که منبع اصلی تأمین آب شرب است، می‏تواند این جوامع را در رویارویی با بحران آب، یاری کند. در این پژوهش ابتدا 22 چاه از آبخوان دشت بیرجند انتخاب شد. سپس آبخوان با استفاده از شاخص آلودگی شیمیایی آب‌های زیرزمینی (PIG) و شاخص خطر بوم­شناسی(ERI) فلزات سنگین با استفاده از نقشه‏های پهنه‏بندی، موردمطالعه قرار گرفت و نقشه‏های نهایی شاخص‏های PIG و ERI تهیه شد. با توجه به شاخص PIG، 74/56% آبخوان دارای آلودگی بسیار زیاد و با توجه به شاخص ERI، 91/0  % آبخوان دارای آلودگی بسیار زیاد می‏باشد. سپس با توجه به دو شاخص PIG و شاخص ERI، شاخص نوین آلودگی و خطر‏‏ بوم­شناسی آب‌های زیرزمینی (PERG) معرفی شد. شاخص PERG آلودگی شیمیایی و فلزات سنگین را در آبخوان شناسایی می‏کند و سبب خلاصه‏سازی در محاسبات و تصمیم‏گیری بهتر برای برداشت آب از سفره‏های آب زیرزمینی می‏شود. از نظر PERG، میزان آلودگی آبخوان 755/1 % مساحت کل می‏باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Presenting a New Index of Pollution and Ecology Risk of Groundwater (PERG)

نویسندگان [English]

  • Nafise Izadi 1
  • َAbbas khasheiSiuki 2
  • Mohsen PourrezaBilondi 3
  • Seyed Reza Hashemi 3
1 M.Sc. Student, Department of Water Science and Engineering, Faculty of Agriculture, University of Birjand, Birjand, Iran
2 Professor, Department of Water Science and Engineering, Faculty of Agriculture, University of Birjand, Birjand, Iran
3 Assoc. Professor, Department of Water Science and Engineering, Faculty of Agriculture, University of Birjand, Birjand, Iran
چکیده [English]

Given the growing population of the world especially in countries with limited water resources, investigating and controlling the quantity and quality of water resources especially groundwater resources which is the main source of drinking water supply, can help these communities in the face of the water crisis which will plague mankind in the near future. In this survey, first, 22 wells were selected from Birjand plain aquifer. Then the aquifer was studied using the Groundwater chemical Pollution Index (PIG) and ecological hazard index (ERI) of heavy metals using zoning maps and final maps of PIG and ERI indices were prepared. According to PIG, 56.74% of the aquifer has a lot of Pollution, and according to ERI, 0.91% of the aquifer has a lot of Pollution. Then, na ew index of Pollution and Environmental Risk of Groundwater (PERG) was introduced according to both Groundwater chemical Pollution Index and heavy metals Environmental Risk Index. PERG detects chemical pollution and heavy metals in the aquifer and leads to better summarization and decision-making in order to collect water from groundwater aquifers. In terms of PERG, aquifer pollution is 1.755% of the total area.

کلیدواژه‌ها [English]

  • ERI index
  • Groundwater resources
  • PERG index
  • PIG index
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