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Effects of grass vegetation coverage and position on runoff and sediment yields on the slope of Loess Plateau, China

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  • Shi, Peng
  • Li, Peng
  • Li, Zhanbin
  • Sun, Jingmei
  • Wang, Dejun
  • Min, Zhiqiang

Abstract

Soil erosion poses serious challenge to the sustainable utilization of soil and water resources worldwide. Vegetation restoration can sufficiently improve the environment and reduce soil erosion. It is important to evaluate the effects of vegetation coverage and position on surface runoff and sediment yield. Therefore, this study simulated four vegetation coverage rates (0%, 20%, 40%, and 60%) and two vegetation distribution positions (downslope and upslope) to study the runoff and sediment yield under three rain intensities (60, 90, and 120 mm h−1). The results showed that the runoff decreased as vegetation coverage increased: 0% > 20% > 40% > 60%. The minimum total runoff occurred at 60% vegetation coverage rate under 60 mm h−1 rain intensity (57.5 L), and the maximum at 0% vegetation coverage rate under 120 mm h−1 rain intensity (172.2 L). The process of sedimentation was similar to that of runoff. As the rate of vegetation coverage increased, the sediment yield decreased. The total sediment yields under 40% and 60% vegetation coverage rates were significantly lower than that under 0%. In addition, the runoff volume and sediment yield of the upslope vegetation pattern were considerably higher than those of the downslope pattern. Under 60 mm h−1 rainfall intensity, the total runoff volume and sediment yield of upslope pattern were 70.6 L and 261.1 g, as opposed to 61.6 L and 174.9 g of downslope pattern, respectively. By analyzing the correlations of runoff and sediment yield with vegetation coverage, the interception effect on runoff and sediment yield increased with the increase in vegetation coverage. Moreover, the downslope pattern contributed more in reducing runoff and sediment yield than the upslope pattern. The results can provide scientific basis for vegetation restoration on the Loess Plateau.

Suggested Citation

  • Shi, Peng & Li, Peng & Li, Zhanbin & Sun, Jingmei & Wang, Dejun & Min, Zhiqiang, 2022. "Effects of grass vegetation coverage and position on runoff and sediment yields on the slope of Loess Plateau, China," Agricultural Water Management, Elsevier, vol. 259(C).
  • Handle: RePEc:eee:agiwat:v:259:y:2022:i:c:s0378377421005084
    DOI: 10.1016/j.agwat.2021.107231
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    Citations

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    Cited by:

    1. Lan Song & Yunfei Bi & Qingsong Bo & Tianyang Li & Yonghao Li & Binghui He & Xinmei Zhao, 2024. "Characteristics of Runoff and Sediment Yield in a Simulated Hedgerow–Grass Ditch System in Sloping Lands with Regosols," Land, MDPI, vol. 13(8), pages 1-14, August.
    2. Xiukang Wang, 2022. "Managing Land Carrying Capacity: Key to Achieving Sustainable Production Systems for Food Security," Land, MDPI, vol. 11(4), pages 1-21, March.
    3. Bo Wen & Chenxi Liu & Xu Tian & Qi Zhang & Shaolie Huang & Yanyuan Zhang, 2024. "Interactive Effects of Ecological Land Agglomeration and Habitat Quality on Soil Erosion in the Jinsha River Basin, China," Land, MDPI, vol. 13(2), pages 1-23, February.
    4. Yongsheng Yao & Peiyi Xu & Jue Li & Hengwu Hu & Qun Qi, 2024. "Advancements and Applications of Life Cycle Assessment in Slope Treatment: A Comprehensive Review," Sustainability, MDPI, vol. 16(1), pages 1-28, January.
    5. Wenqing Li & Guohua He & Yong Zhao & Zhao Liu & Fan He & Haibin Wang, 2023. "An Analysis of Runoff Variation in a Small Basin in the Loess Plateau: Identifying the Variation Causes and Implications for Sustainable Water Management," Sustainability, MDPI, vol. 15(12), pages 1-22, June.
    6. Qiufen Zhang & Xizhi Lv & Yongxin Ni & Li Ma & Jianwei Wang, 2023. "Slope Runoff Process and Regulation Threshold under the Dual Effects of Rainfall and Vegetation in Loess Hilly and Gully Region," Sustainability, MDPI, vol. 15(9), pages 1-14, May.
    7. Lu Xia & Bingqin Zhao & Ting Luo & Yakun Xu & Shiwei Guo & Wennian Xu & Dong Xia, 2023. "Effects of Polyacrylamide, Biochar, and Palm Fiber on Soil Erosion at the Early Stage of Vegetation Concrete Slope Construction," Sustainability, MDPI, vol. 15(7), pages 1-13, March.

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