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The Effects of Geological Units’ Characteristics and Slope Gradient on Runoff and Sediment Yield Using Rainfall Simulator (Case study: Senobar Watershed, Torbat-e-Heydarieh)

    Authors

    • parisa farzi 1
    • maryam azarakhshi 2
    • ali rasoulzadeh 3
    • mehdi bashiri 4

    1 M.Sc. Student of Watershed Management, University of Torbat Heydarieh, I.R.IRAN.

    2 Assistant Professor, University of Torbat-e- Heydarieh, Faculty of Agriculture and Natural Resources, I.R.IRAN.

    3 Associate Professor, University of Mohaghegh Ardabili, Faculty of Agricultural Technology and Natural Resources, I.R.IRAN.

    4 Assistant Professor, University of Torbat-e Heydarieh, Faculty of Agriculture and Natural Resources, I.R.IRAN.

,

Document Type : Research Paper

10.22059/jrwm.2016.61694
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Abstract

Characteristics of stones forming the earth's surface contribute significantly to environmental changes such as soil erosion and movements of soil particles. This study seeks to investigate the main and reciprocal effects of geological units and slope gradient on runoff and sediment production in Senobar watershed using rainfall simulator. To this aim, the geological map was created in Arc GIS 10 software and three dominant units i.e. green tuff, sandstone, marl (Et), Orbitolina Limestone (Kl) and Conglomerate, Sand stone (Ngcs) were identified. Besides, to study the effect of slope gradient, the slope map was provided in three classes: 0-10, 10-30 and more than 30%. Then, the rainfall intensity equal to 0.9 mm min-1 (10- years return period) was created by rainfall simulator. Analysis of variance showed significant differences between geological units for runoff, sediment yield and sediment concentration at 5% significant level. It was found out that there is significant difference between different slope gradients in runoff and sediment production; however, there was no significant difference regarding sediment concentration. The results of interaction between geological units and slope gradient for runoff volume was significant at the 95% level of confidence but regarding sediment yield and sediment concentration interaction effects were not significant. Generally, it was found that the type of geological units and slope of the study area impacted on soil erosion process. Also, the impressibility of runoff variable was more than that of the sediment.

Keywords

  • Sediment
  • Runoff
  • geological unit
  • Slope
  • Rainfall simulator
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Journal of Range and Watershed Managment
Volume 69, Issue 2
July 2016
Pages 437-447
Files
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  • PDF 1000.16 K
History
  • Receive Date: 01 July 2015
  • Revise Date: 11 October 2015
  • Accept Date: 11 October 2015
  • First Publish Date: 21 June 2016
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How to cite
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
Statistics
  • Article View: 701
  • PDF Download: 419

APA

farzi, P., azarakhshi, M., rasoulzadeh, A., & bashiri, M. (2016). The Effects of Geological Units’ Characteristics and Slope Gradient on Runoff and Sediment Yield Using Rainfall Simulator (Case study: Senobar Watershed, Torbat-e-Heydarieh). Journal of Range and Watershed Managment, 69(2), 437-447. doi: 10.22059/jrwm.2016.61694

MLA

parisa farzi; maryam azarakhshi; ali rasoulzadeh; mehdi bashiri. "The Effects of Geological Units’ Characteristics and Slope Gradient on Runoff and Sediment Yield Using Rainfall Simulator (Case study: Senobar Watershed, Torbat-e-Heydarieh)". Journal of Range and Watershed Managment, 69, 2, 2016, 437-447. doi: 10.22059/jrwm.2016.61694

HARVARD

farzi, P., azarakhshi, M., rasoulzadeh, A., bashiri, M. (2016). 'The Effects of Geological Units’ Characteristics and Slope Gradient on Runoff and Sediment Yield Using Rainfall Simulator (Case study: Senobar Watershed, Torbat-e-Heydarieh)', Journal of Range and Watershed Managment, 69(2), pp. 437-447. doi: 10.22059/jrwm.2016.61694

VANCOUVER

farzi, P., azarakhshi, M., rasoulzadeh, A., bashiri, M. The Effects of Geological Units’ Characteristics and Slope Gradient on Runoff and Sediment Yield Using Rainfall Simulator (Case study: Senobar Watershed, Torbat-e-Heydarieh). Journal of Range and Watershed Managment, 2016; 69(2): 437-447. doi: 10.22059/jrwm.2016.61694

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