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Journal of Mountain Science

, Volume 9, Issue 5, pp 723–730 | Cite as

Influence of limited soil on the root distribution and anchorage of Vitex negundo L.

  • Feng Long
  • Shaocai Li
  • Hailong SunEmail author
  • Chengjun Li
Article

Abstract

Field pull-out and laboratory tests were applied to investigate the effect of metal bolts and wire netting on plant root distribution and anchorage characteristics of 9-year-old Vitex negundo L. growing on a weakly weathered rocky slope (38°). Root number, length and diameter were recorded and single root specimens were classified and tested for tensile strength. The results show that root anchorage is different between the two constructions by bolts and wire. Under limited soil condition, root anchorage ability is 80% lower than when there is sufficient soil due to the reduction of the diameter and number of all second-order lateral roots, as well as the reduction of the tensile strength of the embedded second-order and first-order lateral roots on limited soil. We conclude that the distribution and anchorage of Vitex negundo L. is affected by limited soil availability on rocky slopes.

Keywords

Vitex negundo L. Root distribution Ecological engineering Pull-out tests Rocky slope Tensile strength 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Feng Long
    • 1
    • 3
  • Shaocai Li
    • 1
    • 2
    • 3
  • Hailong Sun
    • 2
    Email author
  • Chengjun Li
    • 1
  1. 1.College of Life SciencesSichuan UniversityChengduChina
  2. 2.State Key Laboratory of Hydraulics and Mountain River EngineeringChengduChina
  3. 3.Key Laboratory of Bio-resources and Eco-environmentMinistry of EducationChengduChina

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