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The root reinforcement on the slope under the condition of colonization of various herbaceous plants

  • 0School of mechanical machinery, Anyang Institute of technology, Anyang, 455000, China.
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September 17, 2024

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September 17, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Herbaceous plants like Canadian fleabane significantly enhance slope stability through root reinforcement. This study quantifies their effectiveness in mining environments, improving soil structure and reducing landslide risk.

Area Of Science

  • Geotechnical Engineering
  • Ecological Engineering
  • Soil Science

Background

  • Slope stability is crucial in mining environments, often compromised by erosion and mass movement.
  • Vegetation, particularly herbaceous species, can provide significant root reinforcement to slopes.
  • Understanding species-specific root traits is key to optimizing bioengineering solutions.

Purpose Of The Study

  • To quantitatively assess the root reinforcement provided by different herbaceous species on a dumpsite slope.
  • To develop a model for evaluating root reinforcement at the soil interface.
  • To compare the structural traits, root systems, and biomass of colonizing herbaceous plants.

Main Methods

  • Field assessment of herbaceous plant distribution, structural traits, and root systems on a dumpsite slope.
  • Measurement of root biomass, tensile strength, root area ratio, and reinforcement.
  • Quantitative modeling of root reinforcement at the soil interface.
  • Statistical analysis (ANCOVA, ANOVA) to determine significant variations among species.

Main Results

  • Annual bluegrass (Poa annua), Canadian fleabane (Conyza canadensis), and Suaeda glauca were identified, with biomass order: Annual bluegrass > Canadian fleabane > Suaeda.
  • Annual bluegrass roots showed peak tensile strength at diameters < 0.4 mm.
  • Canadian fleabane exhibited the highest root area ratio and reinforcement across soil profiles.
  • Significant variations (p < 0.05) in root tensile strength, root area ratio, and reinforcement were observed among species.

Conclusions

  • Herbaceous species significantly enhance slope stability through root reinforcement, with Canadian fleabane being particularly effective.
  • The integration of these plants increased surface layer slope stability by 21.6% and marginally expanded the landslide mass cross-section.
  • The study provides a quantitative model for evaluating root reinforcement, applicable to bioengineering in mining reclamation.

Keywords:

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