| 季冻区公路边坡植物根系对冻融作用的影响 |
| |
| 引用本文： | 李云鹏,李劲松,张利东,王新军.季冻区公路边坡植物根系对冻融作用的影响[J].水土保持通报,2020,40(2):134-139. |
| |
| 作者姓名： | 李云鹏 李劲松 张利东 王新军 |
| |
| 作者单位： | 交通运输部科学研究院, 北京 100029,吉林省高等级公路建设管理局, 吉林 长春 130022,吉林省高等级公路建设管理局, 吉林 长春 130022,交通运输部科学研究院, 北京 100029 |
| |
| 基金项目： | 交通运输行业重点科技项目（2018-MS2-054）/中央级公益性科研院所基本科研业务费项目"公路边坡植被防护评价与改进研究"（20160630Y）;吉林省交通运输科技项目"季冻区高速公路典型边坡破坏特征及生态防护优化技术研究"（2017-1-6） |
| |
| 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。
|
| 关 键 词： | 公路边坡 冻融破坏 根系结构 根系力学特性 |
| 收稿时间： | 2019/9/29 0:00:00 |
| 修稿时间： | 2019/12/12 0:00:00 |
Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope |
| |
| Li Yunpeng,Li Jinsong,Zhang Lidong and Wang Xinjun.Effects of Plant Roots on Freeze-thaw Damage in Seasonal-frozen Highway Slope[J].Bulletin of Soil and Water Conservation,2020,40(2):134-139. |
| |
| Authors: | Li Yunpeng Li Jinsong Zhang Lidong and Wang Xinjun |
| |
| Institution: | China Academy of Transportation Science, Beijing 100029, China,Jilin Provincial High Class Highway Construction Bureau, Changchun, Jilin 130022, China,Jilin Provincial High Class Highway Construction Bureau, Changchun, Jilin 130022, China and China Academy of Transportation Science, Beijing 100029, China |
| |
| 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. |
| |
| Keywords: | highway slope freeze-thaw damage root structure root mechanical properties |
|
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
|
