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Influence of gravel mulch on rainfall interception under simulated rainfall

Author

Listed:
  • Yang QIU

    (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P.R. China)

  • Zhongkui XIE
  • Yajun WANG

    (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, P.R. China)

Abstract

To understand the hydrological outcomes of interception by gravel mulches, rainfall simulation experiments were conducted in the loess regions of northwestern China. The rainfall interception decreased with gravel size but increased with the thickness of the gravel mulch layer, following two exponential functions. Interception was 15.1% of the gross rainfall at 1 cm thickness, followed by 17.2, 20.9, 30.5 and 45.6 % at 3, 5, 7 and 10 cm thickness, respectively. For the equivalent gravel grain size of 3.43 mm, relative interception was 45.6%, which was about 1.1, 1.2, 1.4 and 2.3 times higher than that for the equivalent grain size of 11.01, 19.31, 32.8 and 43.72 mm, respectively.

Suggested Citation

  • Yang QIU & Zhongkui XIE & Yajun WANG, 2018. "Influence of gravel mulch on rainfall interception under simulated rainfall," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 13(2), pages 115-118.
    • Handle: RePEc:caa:jnlswr:v:13:y:2018:i:2:id:172-2016-swr
    DOI: 10.17221/172/2016-SWR
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    References listed on IDEAS

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    1. Xie, Zhongkui & Wang, Yajun & Cheng, Guodong & Malhi, Sukhdev S. & Vera, Cecil L. & Guo, Zhihong & Zhang, Yubao, 2010. "Particle-size effects on soil temperature, evaporation, water use efficiency and watermelon yield in fields mulched with gravel and sand in semi-arid Loess Plateau of northwest China," Agricultural Water Management, Elsevier, vol. 97(6), pages 917-923, June.
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    Cited by:

    1. Yang Qiu & Xinping Wang & Zhongkui Xie & Yajun Wang, 2021. "Effects of gravel-sand mulch on the runoff, erosion, and nutrient losses in the Loess Plateau of north-western China under simulated rainfall," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 16(1), pages 22-28.

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