شناسایی تغییرات ناگهانی و تدریجی پارامترهای کیفی آب در ایستگاه‌های پایین‌دست سد گتوندعلیا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجو دکتری آبیاری و زهکشی، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

2 استاد گروه آبیاری و زهکشی، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

3 استادیار گروه آبیاری و زهکشی، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

چکیده

در این مطالعه با استفاده از آزمون من-کندال، روند تغییرات پارامترهای کیفی آب رودخانه کارون در سه ایستگاه پایین‌دست سد گتوندعلیا بررسی و همچنین برای تعیین مقدار شیب خط روند پارامترهای کیفی، از آزمون تخمین­گر شیب سن استفاده شد. علاوه براین با استفاده از دو آزمون تعیین نقطه شکست پتیت و لامبارد نقطه یا نقاط شکست ناگهانی و تدریجی سری زمانی پارامترهای کیفی جریان رودخانه در ایستگاه‌های منتخب شناسایی شد. نتایج آزمون من-کندال نشان داد که در بازه زمانی سال‌های آبی 1364 تا 1395 تمامی پارامترها (به جز pH) از خود روند مثبت نشان دادند. قابل ذکر است که 80% از متغیرها دارای روند مثبت معنی‌دار بودند. نتایج آزمون شیب خط روند نیز نشان داد که در دوره آماری مورد مطالعه کیفیت آب رودخانه کارون در هر سه ایستگاه رو به کاهش بوده است. نتایج دو آزمون لامبارد و پتیت نشان داد که به‌ترتیب 76% و 96% از پارامترها دارای نقطه شکست بودند. همچنین آزمون لامبارد نشان داد که  به‌ترتیب 20 و 63 درصد از پارامترها یک تغییر ناگهانی و تدریجی را تجربه کردند. از جمله دلایلی که می‌توان برای علت وقوع نقطه شکست نام برد، تغییر غلظت پارامترها به‌دلیل پدیده‌های حدی از جمله خشکسالی‌های اواخر دهه 70 و اواسط دهه 80 است.

کلیدواژه‌ها

عنوان مقاله [English]

Detecting abrupt and gradual changes in water quality parameters at the downstream stations of Gotvand-Olia Dam

نویسندگان [English]

  • hossien rahmati 1
  • Saeed Boroomand 2
  • Zahra Izadpanah 3
  • Mohammad Albaji 3
1 PhD Candidate of Irrigation and Drainage Engineering, Faculty of Water Science Engineering, Shahid Chamran University of Ahvaz, Ahvaz
2 Professor, Department of Irrigation and Drainage Engineering, Faculty of Water Science Engineering, Shahid Chamran University of Ahvaz, Ahvaz
3
چکیده [English]

In this study, the trend of changes in water quality parameters of Karoon River was investigated at three downstream stations of Gotvand-Olia Dam using Mann-Kendall test. In addition, Theil-Sen test was employed to determine the slope of the trend line. Furthermore, two change point tests including Pettit and Lombard tests were used to detect the abrupt and gradual change point of quality parameters time series. The results of Man-Kendall test showed that apart from pH, all of the parameters were of a positive trend in the studied period 1985 to 2016. Notably, that 80% of the parameters had a significant positive trend. The results of the slope test showed that water quality in Karoon River has been decreasing in all the three stations. The results of Lombard and Pettit tests respectively showed that 76% and 96% of the parameters had a chance point. Moreover, the Lombard test detected that 20% and 63% of the parameters experienced abrupt and gradual changes, respectively. Hydrological conditions such as the droughts happened in the late 70's and the mid-80's can be mentioned as one of the reasons identified for the cause of the change point in the time series of parameters.

کلیدواژه‌ها [English]

  • Mann-Kendal test
  • Pettit and Lombard change point tests
  • Karoon River

مراجع

حسینی‌زارع،ن و سعادتی،ن. 1387. اثر خشکسالی سال آبی 87-86 بر کمیت و کیفیت منابع آب در استان خوزستان. سومین کنفرانس مدیریت منابع آب ایران، دانشگاه تبریز، 23 الی 25 مهر، تبریز. 
حسینی‌زارع،ن و سعادتی،ن. 1380. اثرات خشکسالی بر کیفیت منابع آب رودخانه‌های کارون و دز در استان خوزستان. اولین کنفرانس ملی بررسی راهکارهای مقابله با بحران آب، دانشگاه زابل.
Al-Taani,A.A. 2014. Trend analysis in water quality of Al-Wehda Dam, north of Jordan. Environmental Monitoring and Assessment. 186: 6223-6239.
Azizabadi Farahani,M., Khalili,D. 2013. Seasonality Characteristics and Spatio-temporal Trends of 7-day Low Flows in a Large, Semi-arid Watershed. Water Resources Management. 27: 4897-4911.
Ba,A., McKenna,S.A. 2015. Water quality monitoring with online change-point detection methods. Journal of Hydro informatics. 17: 7-19.
Bouza-Deaño,R., Ternero-Rodríguez,M., Fernández-Espinosa, A.J. 2008. Trend study and assessment of surface water quality in the Ebro River (Spain). Journal of Hydrology. 361: 227-239.
Caruso,B.S. 2002. Temporal and spatial patterns of extreme low flows and effects on stream ecosystems in Otago, New Zealand. Journal of Hydrology. 257: 115-133.
Chai,C., Yu,Z., Shen,Z., Song,X., Cao,X., Yao,Y. 2009. Nutrient characteristics in the Yangtze River Estuary and the adjacent East China Sea before and after impoundment of the Three Gorges Dam. Science of the Total Environment. 407: 4687–4695.
Chappell,N.A., Jones,T.D., Tych,W. 2017. Sampling frequency for water quality variables in streams: Systems analysis to quantify minimum monitoring rates. Water Research. 123: 49-57.
Costa,M., Gon,A.M., Gonçalves,A.M., Teixeira,L., Gon,A.M., Gonçalves,A.M., Teixeira,L. 2016. Change-point detection in environmental time series based on the informational approach. Electron. Electronic Journal of Applied Statistical Analysis. 9: 267-296.
Dinpasho,Y., Fard,A.F., Hassanpoor,M.A., Vayghan,V.B. 2014. Trend Analysis of Groundwater Quality of Shabestar- Soofian Plain.  Journal of Irrigation Science and Engineering. 38:55-69.
Dinpashoh,Y., Mirabbasi, R., Asce,S.M., Jhajharia,D., Abianeh,H.Z., Mostafaeipour,A. 2013. Effect of short-term and long-term persistence on identification of temporal trends. Journal of Hydrologic Engineering. 19: 617-625.
Golian,S., Mazdiyasni,O., AghaKouchak,A. 2015. Trends in meteorological and agricultural droughts in Iran. Theoretical and Applied Climatology. 119: 679-688.
Groppo,J.D., De Moraes,J.M., Beduschi,C.E., Genovez,A.M., Martinelli,L.A., Grabowski,R.C.; Gurnell,A.M. 2008. Trend analysis of water quality in some rivers with different degrees of development within the S{ã}o Paulo State, Brazil. River research and applications. 24: 1056-1067.
Hamed,K.H., Ramachandra Rao,A. 1998. A modified Mann-Kendall trend test for autocorrelated data. Journal of Hydrology. 204: 182-196.
Huang,H., Wang,Z., Xia,F., Shang,X., Liu,Y., Zhang,M., Dahlgren,R.A., Mei,K. 2017. Water quality trend and change-point analyses using integration of locally weighted polynomial regression and segmented regression. Environmental Science and Pollution Research. 24: 1-11.
Hunsaker,C.T., Johnson,D.W. 2017. Concentration-discharge relationships in headwater streams of the Sierra Nevada, California. Water Resources Research. 53: 1-16.
Karamouz,M., Zahraie,B., Kerachian,R., Mahjouri,N., Moridi,A. 2006. Development of a master plan for industrial solid waste management. International Journal of Environmental Science & Technology. 3: 229-242.
Kisi,O., Ay,M. 2014. Comparison of Mann-Kendall and innovative trend method for water quality parameters of the Kizilirmak River, Turkey. Journal of Hydrology. 513: 362-375.
Mayer,B., Shanley,J.B., Bailey,S.W., Mitchell,M.J. 2010. Identifying sources of stream water sulfate after a summer drought in the Sleepers River watershed (Vermont, USA) using hydrological, chemical, and isotopic techniques. Applied Geochemistry. 25: 747-754.
Mosley,L.M. 2015. Drought impacts on the water quality of freshwater systems; review and integration. Earth-Science Reviews. 140: 203-214.
Pimpunchat,B., Sweatman,W.L., Wake,G.C., Triampo, W., Parshotam,A. 2009. A mathematical model for pollution in a river and its remediation by aeration. Applied Mathematics Letters. 22: 304-308.
Quessy,J.-F., Favre,A.-C., Saïd,M., Champagne,M. 2011. Statistical inference in Lombard’s smooth-change model. Environmetrics. 22: 882-893.
Roth,T., Kohli,L., Rihm,B., Meier,R., Achermann,B. 2017. Using change-point models to estimate empirical critical loads for nitrogen in mountain ecosystems. Environmental Pollution. 220: 1480-1487.
Rougé,C., Ge,Y., Cai,X. 2013. Detecting gradual and abrupt changes in hydrological records. Advances in Water Resources. 53: 33-44. -
Salmani,M.H., Jajaei,E.S. 2016. Forecasting models for flow and total dissolved solids in Karoun river-Iran. Journal of Hydrology. 535: 148-159.
Sharma,S., Swayne,D.A., Obimbo,C. 2016. Trend analysis and change point techniques: a survey. Energy, Ecology and Environment. 1: 123-130.
Singh,K.P., Malik,A., Mohan,D., Sinha,S. 2004. Multivariate statistical techniques for the evaluation of spatial and temporal variations in water quality of Gomti River (India) - A case study. Water Research. 38: 3980-3992.
Sprague, L.A. 2005. Drought Effects on Water Quality in the South Platte River Basin, Colorado. JAWRA Journal of the American Water Resources Association. 41: 11-24.
Tabari,H., Marofi,S., Ahmadi,M. 2011. Long-term variations of water quality parameters in the Maroon River, Iran. Environmental Monitoring and Assessment. 177: 273-287.
Zamani,R., Mirabbasi,R., Abdollahi,S., Jhajharia,D. 2017. Streamflow trend analysis by considering autocorrelation structure, long-term persistence, and Hurst coefficient in a semi-arid region of Iran. Theoretical and Applied Climatology. 129: 33-45.
Zhao,J., Fu,G., Lei,K., Li,Y. 2011. Multivariate analysis of surface water quality in the Three Gorges area of China and implications for water management. Journal of Environmental Sciences. 23: 1460-1471.
ZIELIŃSKI,P., GÓRNIAK,A., Piekarski,M.K. 2009. The effect of hydrological drought on chemical quality of water and dissolved organic carbon concentrations in lowland rivers. Polish Journal of Ecology. 57:217-227.
نشریه آبیاری و زهکشی ایران
دوره 12، شماره 2 - شماره پیاپی 68
خرداد و تیر 1397
صفحه 458-471

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