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Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest China

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  • Zhengan Su
  • Donghong Xiong
  • Yifan Dong
  • Dan Yang
  • Su Zhang
  • Baojun Zhang
  • Xueyong Zheng
  • Jianhui Zhang
  • Liangtao Shi

Abstract

This study assessed temporal variation in soil erosion rates in response to energy consumption of flow (ΔE). It employed an in situ bank gully field flume experiment with upstream catchment areas with bare (BLG) or cultivated land (CLG) that drained down to bare gully headcuts. Water discharge treatments ranged from 30 to 120 L Min −1 . Concentrated flow discharge clearly affected bank gully soil erosion rates. Excluding minimal discharge in the CLG upstream catchment area (30 L min −1 ), a declining power function trend (p ≤ 0.1) was observed with time in soil erosion rates for both BLG and CLG upstream catchment areas and downstream gully beds. Non-steady state soil erosion rates were observed after an abrupt collapse along the headcut slope after prolonged scouring treatments. However, as the experiment progressed, ΔE and energy consumption of flow per unit soil loss (ΔEu) exhibited a logarithmic growth trend (p > 0.1) at each BLG and CLG position. Although similar temporal trends in soil erosion and infiltration rates were observed, values clearly differed between BLG and CLG upstream catchment areas. Furthermore, Darcy–Weisbach friction factor (f) values in the CLG upstream catchment area were higher than the corresponding BLG area. In contrast to the BLG upstream catchment area, lower ΔEu and higher soil erosion rates were observed in the CLG upstream catchment area as a result of soil disturbances. This indicated that intensive land use changes accelerate soil erosion rates in upstream catchment areas of bank gullies and increase soil sediment transport to downstream gullies. Accordingly, reducing tillage disturbances and increasing vegetation cover in upstream catchment areas of bank gullies are essential in the dry-hot valley region of Southwest China. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Zhengan Su & Donghong Xiong & Yifan Dong & Dan Yang & Su Zhang & Baojun Zhang & Xueyong Zheng & Jianhui Zhang & Liangtao Shi, 2015. "Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest Chi," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(1), pages 183-202, November.
    • Handle: RePEc:spr:nathaz:v:79:y:2015:i:1:p:183-202
    DOI: 10.1007/s11069-015-1722-x
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    References listed on IDEAS

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    1. Longshan Zhao & Linhua Wang & Xinlan Liang & Jian Wang & Faqi Wu, 2013. "Soil Surface Roughness Effects on Infiltration Process of a Cultivated Slopes on the Loess Plateau of China," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(14), pages 4759-4771, November.
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    Cited by:

    1. Sandipta Debanshi & Swades Pal, 2020. "Assessing gully erosion susceptibility in Mayurakshi river basin of eastern India," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 22(2), pages 883-914, February.
    2. Rachit Saxena & Sai Kranthi Vanga & Jin Wang & Valérie Orsat & Vijaya Raghavan, 2018. "Millets for Food Security in the Context of Climate Change: A Review," Sustainability, MDPI, vol. 10(7), pages 1-31, June.

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