Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope

Li Yunpeng; Li Jinsong; Zhang Lidong; Wang Xinjun

doi:10.13961/j.cnki.stbctb.2020.02.019

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Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope

- Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope
- Bulletin of Soiland Water Conservation Vol. 40, Issue 2, Pages: 134-139(2020)
- 作者机构：
  
  1. 交通运输部科学研究院,北京,100029
  2. 吉林省高等级公路建设管理局,吉林,长春,130022
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.02.019
  CLC： S714
- Published：2020
- 稿件说明：
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Li Yunpeng, Li Jinsong, Zhang Lidong, et al. Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 134-139.
DOI：

Li Yunpeng, Li Jinsong, Zhang Lidong, et al. Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 134-139. DOI： 10.13961/j.cnki.stbctb.2020.02.019.

摘要

[目的] 探究季冻区公路边坡植物根系对冻融作用影响，为季冻区边坡防护工程的植物选择提供科学参考。[方法] 通过调查季冻区高速公路边坡土壤及植被特征，采用对比分析的方法研究不同植物根系对冻融循环作用的影响。[结果] 3种试验植物根系抵抗冻融破坏的强弱关系依次表现为：刺槐 > 胡枝子 > 紫穗槐。植物根系通过调节土壤物理性质以及发挥根系结构作用影响冻融循环过程，根系的存在调节了土壤含水率从而降低了土体发生融沉或裂缝的概率。[结论] 在季冻区公路边坡冻融破坏防治中，垂直根系生长较深，根系分布范围更广的植物能够提供更好的抵抗冻融破坏的能力。

Abstract

[Objective] The effects of plant root system on freeze-thaw damage in seasonal-frozen highway slope were explored

in order to provide basis for plant selection of slope protection project.[Methods] The characteristics of soil and plant roots on highway slope in seasonal freezing area were investigated

effects of plant on freeze-thaw cycle were discussed by comparative analysis.[Results] The resistances of three plants to freeze-thaw damage were showed as follows:Robinia pseudoacacia > Lespedeza bicolor > Amorpha fruticose. Plant roots affected the process of freeze-thaw destruction by regulating soil physical properties and constituting soil-root structure. The existence of roots regulated soil moisture content and thus reduced the probability of soil settlement or crack.[Conclusion] Plants with deeper vertical root and wider root distribution were recommended to prevent freeze-thaw damage on highway slope in seasonal frozen area.

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