Soil Anti-scourability of Different Horizons in Gully Developed Area of Dry-hot Valley Region
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    Abstract:

    [Objective] The anti-scourabilities of soils from different horizons in gully developed area of dry-hot valley region were compared in order to provide a scientific basis for gully erosion control.[Methods] Undisturbed soil sampled from six different horizons were eroded with scour trough in laboratory.[Results] (1) Except layers of Ⅳ and Ⅴ, the soil anti-scourability of other horizons increased in a power function with the scouring time. Resulted from the existence of fissure, the two layers exhibited a linear function at the scouring earlier stage.(2) There were significant differences in soil anti-scourability among each horizon with ranks as:layer Ⅰ >layer Ⅱ >layer Ⅵ >layer Ⅲ, layer Ⅳ>layer Ⅴ.[Conclusion] Soil anti-scourability decreased with the depth of each horizon in a gyratory way with ranks of layer Ⅰ >layer Ⅱ >layer Ⅲ, and layer Ⅳ >layer Ⅴ >layer Ⅵ.

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郑学用,熊东红,张素,鲜纪绅,杨丹,张宝军,郭敏.干热河谷冲沟发育区不同层位土体抗冲性研究[J].水土保持通报英文版,2015,35(6):101-105

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History
  • Received:October 11,2014
  • Revised:November 21,2014
  • Adopted:
  • Online: April 05,2016
  • Published: