پتانسیل یابی منابع آب زیرزمینی با استفاده از مدل هیدرولوژیکی WetSpa، تکنیک‌های GIS و RS و تحلیل سلسله مراتبی (مطالعه موردی: حوزه آبخیز بالخلوچای، اردبیل)

نویسندگان

1 دانشجوی دکتری آبخیزداری دانشگاه کاشان

2 عضو هیئت علمی دانشگاه کاشان

چکیده

با توجه به اهمیت نقشه های پتانسیل آب زیرزمینی در اکتشاف، بهره برداری و مدیریت منابع آب زیرزمینی، در این پژوهش نقشه پتانسیل آب زیرزمینی حوزه آبخیز بالخلوچای تهیه شد. بدین منظور از 6 معیار مشتمل بر 12 زیرمعیار مؤثر بر نفوذپذیری و تغذیه آب زیرزمینی استفاده گردید. نقشه معیارها و زیرمعیارها با استفاده از نقشه های پایه موجود، مدل هیدرولوژیکی WetSpa و تکنیک های RS و GIS در فرمت رستری تهیه شدند. وزن هر یک از معیارها و زیرمعیارها با استفاده از فرایند تحلیل سلسله مراتبی تعیین شد و نقشه پتانسیل آب زیرزمینی از تلفیق نقشه های معیار و زیرمعیار ها بر اساس وزن های اختصاص داده شده، تهیه شد. نتایج نشان داد که 53/10 و 61/14 درصد از مساحت منطقه مورد مطالعه به ترتیب دارای پتانسیل آب زیرزمینی بالا و خوب بوده که در بخش های شرقی و جنوب غربی حوزه آبخیز قرار گرفته و در ارتباط با سنگ های نفوذپذیر و شیب ملایم هستند. همچنین بیش از 50 درصد منطقه دارای پتانسیل آب زیرزمینی کم است که در ارتباط با سنگ های با نفوذپذیری کم در دامنه های پرشیب و کوهستانی است.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of Groundwater Potential Using WetSpa Hydrological Model, GIS and RS Techniques and Analytical Hierarchy Process (Case Study: Balukhluchay Watershed, Ardabil)

نویسندگان [English]

  • Rasool Imani 1
  • Hoda Ghasemieh 2
چکیده [English]

Due to the importance of groundwater potential maps in exploration, exploitation and management of groundwater resources, groundwater potential map of Balukhluchay watershed was prepared in this study. Therefore 12 sub-criteria from 6 criteria, which affecting infiltration and groundwater recharge, were used. Criteria and sub-criteria maps were prepared in raster format using existing base maps, WetSpa hydrological model and also RS and GIS techniques. Criteria and sub-criteria weights were determined using analytical hierarchy process and groundwater potential map was prepared by combination of criteria and sub-criteria maps baced on assigned weights. Results showed that 10.53 and 14.61 percent of the study area has high and good groundwater potential respectively which is located in eastern and south-western part of watershed and are in relation with permeable rocks and low slope. Also more than 50 percent of the area has low groundwater potential which is in relation with low-permeable rocks located in steep mountainous hills.

کلیدواژه‌ها [English]

  • AHP
  • Balukhluchay
  • Groundwater potential
  • RS
  • WetSpa model
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