Water Resources Contribution Recharging the Kani Brazan Wetland Using Hydrogeochemical and Stable Isotope Approaches

Articles in Press

Document Type : Original Article

Authors

Faculty of Natural Resources, Urmia University, Urmia, Iran

10.22034/iwrr.2024.429846.2731

Abstract

At the same time as the water level of Lake Urmia decreases, the depth of the wetlands of this lake, including the Kani Brazan Wetland, has decreased during wet and dry periods. In this research, the hydrogeochemical interaction between surface water sources (wetland, rivers entering the wetland and springs), groundwater and precipitation in the watershed of Kani Brazan Wetland in Mahabad city (northwest of Iran) using Natural tracers, stable isotopes 〖(^2 Hو.〗^18 O) and water geochemistry including anions )SO_4^(2-) ،HCO_3^(2-) ، CO_3^(2-)، Cl^-) and cations (Ca^(2+)، Mg^(2+)، K^+، Na^+) have been investigated during in the year (fall 2018 to summer 2019). According to The results obtained from the data of stable isotopes, the slope of the linear equation of the springs was estimated as 5.6 and the slope of the linear equation of the wetland was estimated as 4.73. The geochemical data show that the highest amount of anion and cations in well, spring and wetland samples belong to Cl^-, Na^+ , respectively, and in river samples, the highest amount of anions and cations are HCO_3^(2-) and Ca^(2+) Also, the Piper diagram of the wetland feeding by the spring was verified using hydrogeochemical data. The statistical results showed that the wetland water samples had a significant difference compared to the rainwater, river and well water and with the spring samples. It shows a significant correlation. Therefore, compared to other water sources, springs have the highest amount of water discharge into the wetland in a natural state and without regulatory conditions.

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Main Subjects

Iran-Water Resources Research

Articles in Press, Accepted Manuscript
Available Online from 30 April 2024

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History

  • Receive Date: 10 December 2023
  • Revise Date: 22 April 2024
  • Accept Date: 30 April 2024

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