Survey the effect of land use changes on quality of water Maroon River using RS and GIS

Subject Areas :

Khosro Shafi Motlagh ¹ , Jahangi Porhemat ² , Hossin Sedghi ³ , Majid Hosseini ⁴

1 - دانشجوی دکتری مهندسی منابع آب، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران. [e-mail]
2 - دانشیارپژوهشکده حفاظت خاک و آبخیزداری
3 - استاد گروه علوم و مهندسی آب دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران
4 - استادیار پژوهشکده حفاظت خاک و آبخیزداری

Received: 2014-11-02 Accepted : 2015-04-21 Published : 2015-08-23

Keywords: Water Quality, land use, RS &GIS, Maroon watershed,

Abstract :

In arid and semi-arid conditions and water shortage, sensitive to water quality of rivers and factors influencing on them, is necessary. Maroon Watershed in recent decades has been prey extensive land use changes. Drought and misuse of lands were the most important factors in reducing the volume and quality of water resources in the basin. In this study, changes in land use in the watershed Maroon within four ten-year period from 1980 to 2010 using sensors of TM and ETM satellite Landsat and then the changes in water quality over the same period, and even more between 1347 and 1394, were studied over a period of 47 years. Changes in land use in order to increase residential areas and increased agricultural land in the drought occurred during the past 47 years in reducing water quality in the watershed Maroon Ideanak station output is  affected. However, due to the drastic changes in land use occurred, increasing the surface of residential and agricultural land feature of lowering the quality of Maroon river water.