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Temporal variations of runoff and sediment in different soil clay contents using simulated conditions

Author

Listed:
  • Mehdi BASHARI

    (Department of Watershed Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran)

  • Hamid Reza MORADI

    (Department of Watershed Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran)

  • Mir Masoud KHEIRKHAH

    (Soil Conservation and Watershed Management Research Institute, Tehran, Iran)

  • Majid JAFARI-KHALEDI

    (Department of Statistics, Faculty of Mathematical Sciences, Tarbiat Modares University, Tehran, Iran)

Abstract

Soil clay content (SCC) plays an essential role in the processes of infiltration, seal and crust formation, runoff, and soil erosion. The role played by SCC in water erosion has received much attention in recent years. Hence, in order to investigate these effects on a small scale, a simulation experiment was conducted. Soil lacking clay content was combined with 0, 10, 20, 30, 40, and 50% of clay soil, respectively. The experimental setup consisted of rectangular metal plots (1.5 × 1 m) comprising soil with selected combinations of clay content, placed at a 9% slope. Six treatments, three replicates each (totally 18 plots), were exposed to simulated rainfall at an intensity of 70 mm/h for 30 min. The results were compared by means of statistical tests. General trends in runoff volume were similar for different SCCs and decreasing and increasing trends were achieved for sediment and runoff, respectively. The results showed significant differences in the hydrological and erosional responses of these soils based on their clay contents. The soils with intermediate clay content were more resistant to erosion and had lower values of the runoff. Finally, time had significant (P < 0.00) effects on both runoff and sediment production during the rainfall.

Suggested Citation

  • Mehdi BASHARI & Hamid Reza MORADI & Mir Masoud KHEIRKHAH & Majid JAFARI-KHALEDI, 2013. "Temporal variations of runoff and sediment in different soil clay contents using simulated conditions," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 8(3), pages 124-132.
    • Handle: RePEc:caa:jnlswr:v:8:y:2013:i:3:id:60-2012-swr
    DOI: 10.17221/60/2012-SWR
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    References listed on IDEAS

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    1. Eisa Maroufpoor & Arsalan Faryabi & Houshang Ghamarnia & Goran Yamin Moshrefi, 2010. "Evaluation of uniformity coefficients for sprinkler irrigation systems under different field conditions in Kurdistan Province (Northwest of Iran)," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 5(4), pages 139-145.
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    Cited by:

    1. Baoyang Sun & Feipeng Ren & Wenfeng Ding & Guanhua Zhang & Jinquan Huang & Jianming Li & Lei Zhang, 2021. "Effects of freeze-thaw on soil properties and water erosion," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 16(4), pages 205-216.

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