تاثیر خشکسالی بر کمیت و کیفیت آب رودخانه دز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی علوم آب/ واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران.

2 گروه مهندسی علوم آب/ واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

چکیده

این تحقیق با هدف بررسی و تحلیل اثرات خشکسالی از طریق محاسبه شاخص SPI برکمیت و کیفیت آب رودخانه دز انجام شد. برای تعیین خشکسالی، آمار هواشناسی 10 ساله (1393-1384) از ایستگاه‎های هواشناسی حسینیه، دزفول و شوش و برای ارزیابی تاثیر خشکسالی بر کمیت و کیفیت آب رودخانه، آمار دبی و پارامتر‌های کیفی آب رودخانه دز مربوط به 7 ایستگاه هیدرومتری در طول مسیر، از سازمان آب و برق خوزستان اخذ گردید. فراوانی میانگین آنیون‌های محلول در ایستگاه‌های هیدرومتری رودخانه دز به صورت HCO3>SO4>C ومقادیر کاتیون-های اصلی محلول در آب نیز به‌صورت Ca>Na>Mg بدست آمد. نتایج تجزیه واریانس پارامتر‌های کیفی آب نشان داد اثر ایستگاه و سال بر میزان دبی، هدایت الکتریکی (EC)، مواد محلول آب (TDS)، سدیم قابل تبادل آب (SARIW)، pH، غلظت کلر (Cl)، بی‌کربنات (HCO3)، کلسیم (Ca)، منیزیم (Mg)، سدیم (Na) و سولفات (SO4)، اختلاف معنی‌داری در سطح اطمینان % 99‌ دارد. بررسی روند تغییرات شوری آب دز نشان داد در ایستگاه‌های سپید دشت سزار، سپید دشت زاز و تنگ پنج سزار روند تغییرات شوری معنی دار نیست این درحالی است که در ایستگاه‌های پایین دست رودخانه روند تغییرات شوری معنی‎دار و مثبت است. شدید‌ترین خشکسالی در ایستگاه حسینیه و دزفول در سال 1387 و در ایستگاه شوش در سال 1390 رخ داد. در سال‌های خشکسالی میزان شوری آب رودخانه دز به طور متوسط % 24/15 افزایش داشت. نتایج تحقیق نشان داد پدیده خشکسالی پارامتر‌ی است که در کنار مسایل انتقال آب، تغییر کاربری اراضی و مدیریت صحیح عوامل آلاینده، بر کیفیت آب موثر است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Drought on the Water Quality and Quantity of Dez River

نویسندگان [English]

  • Saeed Azish 1
  • Ali Asareh 2
  • Davoud Khodadadi Dehkordi 1
1 Department of Water Science Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 Department of Water Science Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
چکیده [English]

The aim of this study was the evaluation of drought effects through SPI index assessment on the water quality of the Dez River. For the determining the drought, ten-year meteorological data (2005-2014) were achieved through the weather stations of Hussainiya, Dezful, and Shush and for impact evaluation of drought on the water quality of the Dez River, discharge statistics and qualitative parameters related to seven hydrometric stations along the Dez River achieved through Khuzestan Water And Power Authority. The mean frequency of dissolved anions and cations in the hydrometric stations of the Dez River achieved like HCO3>SO4>Cl and Ca>Na>Mg. The variance analysis of the water qualitative parameters showed that the effect of station and year on the amounts of discharge, EC, TDS, SARIW, pH, Cl, HCO3, Ca, Mg, Na, and SO4 had a significant difference (P

کلیدواژه‌ها [English]

  • Drought
  • Dez River
  • Mann-Kendall Test
  • SPI index
 
Alizadeh A (2004) Principles of applied hydrology. Ferdowsi University of Mashhad Press, 815p (In Persian)
Chessman BC, Townsend SA (2010) Differing effects of catchment land use on water chemistry explain contrasting behaviour of a diatom index in tropical northern and temperate southern Australia. Ecological Indicators 10(3):620-626
Asadzadeh F, Kakiadeh M, Shakiba S, Raei B (2016) Impact of drought on groundwater quality and groundwater            level in Qorveh- Chardoli Plain. Iran­-Water Resources Research 12(3):153-165 (In Persian)
Ebadati N, Hooshmandzadeh M (2014) Water quality evaluation of Dez River in the Dezful hydrometric station. Iranian journal of Ecohydrology 1(2):69-81 (In Persian)
Eion M, Cameron M (1996) Hydrogeochemistry of the Fraser River, British Columbia: seasonal variation in major and minor components. Journal of Hydrology 182(1-4):209-225
Fernández AC, Fernández AM, Domínguez CT, Santos BL (2006) Hydrochemistry of northwest Spain ponds and its relationships to groundwater. Journal of The Ecology of the Iberian Inland Waters 25(1-4):433-452
Hayes JM, Svoboda MD, Wilhite DA, Vanyarkho OV (1999) Monitoring bulletin of the (1996) drought using the standardized precipitation index. American meteorological society 80(3):429-438
Hong WU, Hayesi JM, Weiss A, Qi H (2001) An evaluation of the standardized precipitation index, The china–z index and the statistical z-score. International Journal of Climatology 21:745-758
Hoseini P, Ildroumi A, Hoseini A (2013) Evaluation of water quality of Karun River using NSFWQI index in the range of Zergan to Kut-Amir (during 5 years). Quarterly Periodical of Human and Environment 25:1-11 (In Persian)
Kazemzadeh M, Noori Z, Moghadamnia AR, Malekian A (2015) Clustering and analyzing of surface water droughts severity and duration (Case study: Ilam Province). Journal of Watershed Management Research 6(12):127-138 (In Persian)
Kalantari N, Arshad, P (2012) Effect of drought on quality and quantity of Chahgah plain groundwater using GIS. National Conference on Optimal Utilization of Water, (IAUD01_077-2012), 20-21 February, Islamic Azad University, Dezful Branch, Iran (In Persian)
Kendall MG (1975) Rank Correlation Measures. Charles Griffin, London
Mann HB (1945) Non-parametric tests against trend. Econometrica 13(3):245-259
Mahmoudi P, Tawousi T, Shahouzei A (2015) Drought and its effects on groundwater resources quality in Sistan and Baluchestan province. Journal of Water Research in Agriculture 29(1):21-35 (In Persian)
Mckee TB (1993) Methodology-SPI defined. National Drought Mitigation Center. Science, Colorado State University Collins, 155p
Nakhai M (2009) Introduction on groundwater. Ketab Arad Press, 198p (In Persian)
Nikbakht J, Moradi O (2019) Effect of drought on Hashtgerd Plain groundwater quantity and quality considering irrigation use. Iran­-Water Resources Research 14(4):120-131 (In Persian)
Ngoye E, John FM (2004) The influence of land use patterns in the Ruva river watershed on water quality in the river system. Physics and Chemistry of the Earth 29:1161-1166
Pashiardis S, Michaelides S (2008) Implementation of the standardized precipitation index (SPI) and the reconnaissance drought indx (RDI) for regional drought assessment: A case study for Cyprus. Europe Water 23(24):57-65
Riahi-Khorram M, Nafe M (2008) Evaluation of seasonal variations trend of Gamasiab River water quality in Nahavand town. In: Proc. of 11th National Congress on Environmental Health (NCEH11_065-2008), 28-29 October, Zahedan University of Medical Sciences, Iran (In Persian)
Rahimi L, Dehghani AA, Ghorbani Kh (2016) Comparison of total flow, base flow and water-quality characteristics trend in Arazkuseh Hydrometric Station. Journal of Watershed Management Research 7(13):83-91 (In Persian)
Sari Saraf B, Gholinedjad N, kamani A (2011) Investigation of drought and mildew of the Aras basin using rainfall profiles. Natural Geography 4(12):1-15 (In Persian)
Shokouhi-Far M, Izadpanah Z (2013) Evaluation of relation between TDS, EC, HCO3 and Cl with Karun River water in warm and cold seasons using regression analysis. 1st National Conference on Water Resources and Agricultural Challenges, (CHWRA01_068-2013), 13 February, Islamic Azad University, Khorasgan Branch, Iran (In Persian)
Shakiba A, Azimi F, Boazar F (2009) Evaluation of drought periods and its effect on the lower side of the Karkheh River. Geography 3(10):119-139 (In Persian)
Soleimani Motlagh M, Talebi A, Zareei M (2013) The study of drought on the quality of surface water resources in Kashkan Watershed. Journal of Watershed Management Research 6(12):154-165 (In Persian)
Wilhite DA, Glantz MH (1985) Understanding the drought phenomenon: the role of definitions. Water International 10:111-12
Zahedi-Kalaki A (2004) Impacts evaluation of drought on quality and quantity of Behshahr town water resources. M.Sc. Thesis, School of Earth Sciences, Shahid Beheshti University (In Persian)