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Storm-wise sediment yield prediction using hillslope erosion model in semi-arid abundant lands

Author

Listed:
  • Somayeh FAZLI

    (Young Researchers Club, Arak Branch, Islamic Azad University, Arak, Iran)

  • Hamzeh NOOR

    (Young Researchers Club, Arak Branch, Islamic Azad University, Arak, Iran)

Abstract

Evaluation of soil erosion by existing models is needed as an important tool for managerial purposes in designation of proper water and soil conservation techniques. The present study aimed to assess the applicability of hillslope erosion model (HEM) as one of the newest erosion models for prediction of storm-wise sediment yield in Khosbijan rangeland with 20% slope steepness by using soil erosion standard plots. In order to run the model, runoff depth, land surface cover, soil texture, slope steepness and length were determined for 16 storm events. The results showed that the uncalibrated HEM did not simulate the observed sediment yields properly. Calibration of soil erodibility parameter and developing regression between observed and estimated data indicated that the model was capable of predicting sediment yield in plots by applying soil erodibility parameter of 0.15 with determination coefficient of 0.64 and estimate error of 40%.

Suggested Citation

  • Somayeh FAZLI & Hamzeh NOOR, 2013. "Storm-wise sediment yield prediction using hillslope erosion model in semi-arid abundant lands," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 8(1), pages 42-48.
    • Handle: RePEc:caa:jnlswr:v:8:y:2013:i:1:id:27-2012-swr
    DOI: 10.17221/27/2012-SWR
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