1دانشجوی کارشناسی ارشد آبخیزداری، دانشکده منابع طبیعی، دانشگاه صنعتی خاتم الانبیاء بهبهان
2استادیار گروه مهندسی طبیعت، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
3استادیار، دانشکده منابع طبیعی، دانشگاه صنعتی خاتم الانبیاء بهبهان
چکیده
حفاظت و استفاده بهینه از منابع آب از اصول توسعه پایدار هر کشور است. آبهای سطحی جاری یا رودخانهها یکی از مهمترین منابع آب هستند که نقش مهمی در تامین آب مورد نیاز بخشهای مختلف مانند کشاورزی، صنعت، شرب و تولید برق دارند. رودخانه شاوور که یکی از رودخانههای مهم و تاثیرگذار شهرستان شوش بهشمار میرود، بهدلیل استفاده از آب آن در کاربریهای شهری و کشاورزی کیفیت آن حائز اهمیت است. کاربری اراضی و تغییرات آن تاثیر بسزایی بر کیفیت آب رودخانهها دارد، در پژوهش حاضر، تاثیرات تغییر کاربری اراضی بر روی کیفیت آب رودخانه شاوور در دوره زمانی 1393-1363 بررسی شد. نقشههای کاربری اراضی مربوط به سالهای 1363 و 1393 به کمک تصاویر ماهوارهای تهیه شد و سپس، تغییرات کاربری اراضی بررسی شد. نتایج نشان داد، در سری دادههای مورد مطالعه، روند معنیدار وجود دارد و افزایش اراضی مسکونی و کشاورزی و کاهش اراضی مرتعی و جنگلی را در پی داشت. سپس، در دوره مطالعاتی روند تغییرات عوامل کیفی آب رودخانه شاوور به کمک آزمون من-کندال و نمودارها بررسی شد. نتایج نشان داد، روند کلی تغییرات پارامترهای HCO3 ،Cl ،TDS ،EC ،Ca ،Mg و SO4 در دوره زمانی مورد مطالعه، افزایشی بوده است. با توجه به تغییر معنیدار پارامترهای مورد مطالعه میتوان دریافت، افزایش اراضی مسکونی و کشاورزی و کاهش اراضی مرتعی و جنگلی، باعث کاهش کیفیت آب رودخانه شاوور در طی دوره مورد مطالعه شده است.
Evaluation of impacts of land use change on Shavoor River water quality
نویسندگان [English]
Soghra Malekpurlarki1؛ Zohre Khorsandi kouhanstani2؛ Mohammad Faraji3
1MSc Student, Faculty of Natural Resources, Behbahan Khatam Alanbia University of Technology, Iran
2Assistant professor, Faculty of Natural Resource, Agricultural Sciences and Natural Resources University of Khuzestan, Iran
3Assistant Professor, Natural resources faculty, Behbahan Khatam Alanbia University of Technology, Iran
چکیده [English]
Conservation and utilization of water resources are principles of sustainable development of each country. Surface waters or rivers are one of the most important water resources which have important role in supplying water demands in different sectors such as agriculture, industry, drinking water and energy. Shavoor River which is one of the effective rivers in Shoosh City is important due to its quality in water urban and agricultural usages. Land use and its changes have important effects on river water quality. In this research, the effect of land use change is investigated in water quality of Shavoor River in 1985-2015. For this reason, land use maps of 1985 and 2015 were prepared by satellite imageries and land use changes were investigated. Results showed an increase in residential and agricultural lands and a reduction in rangelands and forests. Also, the changing trend of water quality factors in Shavoor River was studied with Mann-Kendall test and graphs. Results demonstrated that the changes overall trend of Hco3, Cl, TDS, EC, Ca, Mg and So4 were increasing in the period. According to meaningful changes of parameters, it can be concluded that the increase in residential and agricultural lands and reduction in rangelands and forests cause the water quality of Shavoor River in the study period.
کلیدواژهها [English]
GIS, Land use change, Mann-Kendall, Quality reduction, Remote Sensing
مراجع
Al-Razzaq, H. and H. Alnajjar. 2013 .Maximum likelihood for land-use/land-cover mapping and change detection using Landsat satellite images: a case study south of Johor. International Journal of Computational Engineering Research, 6: 27-33.
Bowden, C., M. Konovalske, K. Curran and S. Touslee. 2015. Water quality assessment: the effect of land use and land cover in urban and agricultural land. Natural Resources and Environmental Sciences (NRES), 2: 1-21.
Buck, O., D. Niyogi and K. Colin. 2004. Towards scale-dependence of land use effects on water quality of streams in agricultural catchments. Environmental Pollution, 130: 287-299.
Chessman, B.C. and S. Townsend. 2009. Differing effects of catchment land use on water chemistry explain contrasting behavior of a diatom index in tropical northern and temperate southern Australia. Ecological Indicators, 10(3): 620-626.
Fathian, F., S. Disciple and P. Senior. 2012. The assessment of land use changes using remote sensing technology and its relationship with the rivers flow, a case study on Hvzh-Ha east of Lake Urmia. Journal of Water and Soil, (Agricultural Sciences and Technology), 27(3): 642-655 (in Persian).
Ghanbari, F. and S.B. Shtayy. 2010. To assess changes in forest surface using aerial photos and pictures ASTER, case study: marginal forests south and southwest of the city of Gorgan. Journal of Wood Science and Technology and Forest, 17(4): 18-29 (in Persian).
Hassler, M. 2004. Animal grazing effects on runoff water quality in a semiarid grassland. Journal of Environmental Quality, 21(5): 102-105.
Khebri, Z., F. Nezhad Kooraki and H. Svday Born. 2015. Land and river water quality vector parameters using geographic information system. Journal of Remote Sensing and GIS Natural Resources, 2: 23-35 (in Persian).
Li, D, H. Xie and L. Xiong. 2014. Temporal change analysis based on data characteristics and nonparametric test. Water Resource Management, 28: 227-240.
Moradi, M., N. Piety and N. Bahramifar. 2008. The impact of different land use on the quality of surface water resources. Fourth Conference of Geology and Environment, Tehran, 1-10 pages (in Persian(.
Rasouli, A. 2009. With an emphasis on the principles of applied remote sensing satellite image processing. Tabriz University Press, 777 pages.
Razavizadeh, Q., M. Mohseni Saravi and A.S. Seljuks. 2013. The effect of the change on river water quality of Taleghan. Iranian Journal of Water Research, 2: 1-6 (in Persian).
Ren, W., Z. Hong, M.J. Anderson, P. Watt, W.E. Chen and J.H.L. Leung .2003. Urbanization, land use and water quality in Shanghai. Environment International, 29: 649-659.
Sakizade, M. 2004. Check and fingerprinting Black River watershed pollution sources in the province of Gilan. MSc Thesis, Faculty of Natural Resources, Tehran University, 102 pages (in Persian).
Salajegheh, A., S. Razavizadeh, M. Khorasani and Q. Seljuks. 2011. Land use changes and their impact on river water quality. Ecology, 58: 81 86 (in Persian).
Soleimani Sardo, C.E., R.S. Ghazavi and H. Graghany. 2013. Analysis and routing of water quality parameters. Journal of Irrigation and Water Engineering, 12: 12-1 (in Persian).
Xu, Z.X., K. Takeuchi and H. Ishidaira. 2003. Monotonic trend and step changes in Japanese, precipitation. Journal of Hydrology, 279: 144-150.
Zahedi, P.D. 2013. To evaluate changes in land use in winter dam basin using remote sensing data. Third International Conference on Environmental Planning and Management, Tehran University (in Persian).