Davood Mokhtari; Somayyeh Moazzez; Fatemeh Mohammadzadeh Golani
Volume 4, Issue 10 , June 2017, , Pages 1-19
Abstract
Water supply has been one of the most important issues in human life since the ancient times. Surface and underground water resources are valuable resources that supply fresh water to human use. Regarding the increase in human population, agricultural and industrial development, and overusing water, ...
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Water supply has been one of the most important issues in human life since the ancient times. Surface and underground water resources are valuable resources that supply fresh water to human use. Regarding the increase in human population, agricultural and industrial development, and overusing water, the study of any area's water potentials is essential for its protection and efficient water use. In this study, the prioritization of hydro-geomorphological factors in water supply and allocating appropriate settlements were investigated. In addition, the TM image of Landsat Satellite, 2011, were used. The selected Hydro-geomorphological factors included slope, slope direction, lithology, land use, and the like, which were prepared in the GIS environment. Then, through the analysis of a hierarchical process, weighting of the layer was performed. The accuracy of the measurement in this study was verified using the comparison of the obtained results with all layer information as the standard. It was revealed that the places which were marked as very suitable and suitable had the best conditions. It could be concluded that the process of AHP has a better function in determining hydro-geomorphological factors in water supply and identifying the allocation of settlements. In addition, the interpretation of the results revealed that the distance from the river, rain fall and elevation the most significant factors.
Davood Mokhtari; Fatemeh Mohammazadeh Golani; Mohammadreza Nikjoo; Shamsollah Asghari
Volume 3, Issue 6 , January 2017, , Pages 1-16
Abstract
Estimates of Erosion Sediment of Gavi River Catchment Using Mpsiac Method in GIS Environment Davood Mokhtari[1] Fatemeh Mohammazadeh Golani[2]* Mohammadreza Nikjoo[3] Shamsollah Asghari[4] Abstract Gavi river catchment is located in the south west of Ilam city covering the area of 460 km² ...
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Estimates of Erosion Sediment of Gavi River Catchment Using Mpsiac Method in GIS Environment Davood Mokhtari[1] Fatemeh Mohammazadeh Golani[2]* Mohammadreza Nikjoo[3] Shamsollah Asghari[4] Abstract Gavi river catchment is located in the south west of Ilam city covering the area of 460 km² where different types of erosion incidences are noticeable therefore, estimating the amount of erosion and deposition is essential for soil and water conservation projects. The method of this study is based on litrature review, field and empirical models of erosion and sedimentation estimation. Empirical model of MPSIAC whit considers the most effective parameters in erosion and sediment is used as a chosen technique and the environmental parameters are analyzed in this format. At the end the results were compared to Bajk strait sediment station. GIS software is used to prepare the information layers. The results show that MPSIAC model is a good model in this area, because as a sample, the estimated amount of sediment in the area using MPSIAC model was 20.453 tons per square kilometer of sediment per year and estimated sediment in hydrometeric station of Bajak strait is 23.460 tons per year. It was also observed that the estimated sediment in this basin is in erosional Class4 and in terms of quality classification, erosion is in high level and according to the definition of this level it can be said that in this basin the relocation of the soil particles (dust) is in a rate that accomplishment of soil and water conservation programs should be in priority and lands usage should be limited. Keywords: Gavi catchment, Erosion and sediment, MPSIAC, GIS. [1]- Professor of Geomorphology, University of Tabriz, Tabriz, Iran. [2]- Master Student of Geography, University of Tabriz, Tabriz, Iran, Email:fa.mohammadzade@yahoo.com. [3]- Associate Professor of Geomorphology, University of Tabriz, Tabriz, Iran. [4]- Lecture of Agricultural Research Center of Ilam Province.
