Mechanism of Soil Reinforcement by Vegetation Roots in Canal of Ezhou Airport

Huang Gang; Zheng Mingxin; Wang Qing; Lu Xuesong; Peng Jing

doi:10.13961/j.cnki.stbctb.2021.01.003

您当前的位置：

首页 >

文章列表页 >

Mechanism of Soil Reinforcement by Vegetation Roots in Canal of Ezhou Airport

- Mechanism of Soil Reinforcement by Vegetation Roots in Canal of Ezhou Airport
- Bulletin of Soiland Water Conservation Vol. 41, Issue 1, Pages: 15-21(2021)
- 作者机构：
  
  1. 华东交通大学土木建筑学院,江西,南昌,330013
  2. 黄冈师范学院建筑工程学院,湖北,黄冈,438000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.01.003
  CLC： TU411.3
- Published：2021
- 稿件说明：
移动端阅览
Huang Gang, Zheng Mingxin, Wang Qing, et al. Mechanism of Soil Reinforcement by Vegetation Roots in Canal of Ezhou Airport[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 15-21.
DOI：

Huang Gang, Zheng Mingxin, Wang Qing, et al. Mechanism of Soil Reinforcement by Vegetation Roots in Canal of Ezhou Airport[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 15-21. DOI： 10.13961/j.cnki.stbctb.2021.01.003.

摘要

[目的] 定量分析鄂州航空港通渠河岸草灌植物（狗牙根、香根草和紫橞槐）根系分布参数对土体的加固作用，为更好地评价植物根系固土效能提供理论依据。[方法] 通过根钻取样法探究草灌根系分布参数在不同深度的变化规律；开展室内直剪试验和室外张力计测试分别研究了根系分布参数变化对抗剪强度指标和基质吸力的影响。[结果] ①植物的根系分布总体上随着土体深度的增加而减少，灌木植物（紫橞槐）根系分布参数在深度为0-40 cm范围内是草本植物（香根草和狗牙根）的2.13~2.90倍。②灌木植物根-土复合体黏聚力明显大于草本植物，黏聚力与根长度密度（RLD）和根表面积密度（RSAD）满足多项式函数关系。③根系分布参数RLD和RSAD的黏聚力和基质吸力差异达到显著水平（p<0.05）。④灌木植物（紫橞槐） RLD和RSAD对土体基质吸力的增强作用存在最优含根密度。[结论] 狗牙根、白三叶和紫橞槐根系均能显著发挥固土作用。由于根系分布、固土深度、固土方式等差异，三者的固土作用不同，可将三者结合种植，不仅有利于河岸边坡的稳定，也可提高土体的抗冲性。

Abstract

[Objective] The root distribution parameters of grass-shrub vegetation (Cynodon dactylon

Vetiveria zizanioides

and Amorpha fruticosa) on soil reinforcement on the banks of the canal of Ezhou airport were analyzed quantitatively to provide a theoretical basis for better evaluation of the effectiveness of vegetation root soil.[Methods] The root-drill sampling method was used to explore the changes in grass-shrub root distribution parameters at different depths. Indoor direct shear tests and outdoor tensiometer tests were carried out to study the effect of root distribution parameters on shear strength indices and matrix suction.[Results] ① The root distribution of grass-shrub vegetation generally decreased with increasing soil depth. The root distribution parameters of shrubs (A. fruticosa) and herbs (C. dactylon and V. zizanioides) were 2.13-2.90 times in the depth range of 0-40 cm. ② The cohesion of the shrub root-soil composite was significantly higher than that of the herbs

and the cohesion satisfied a polynomial function relationship with root length density (RLD) and root surface area density (RSAD). ③ RLD and RSAD had significant differences in cohesion and matrix suction (p<0.05). ④ There was an optimal root density for the RLD and RSAD of shrubs (A. pseudoacacia) to enhance the suction of the soil matrix.[Conclusion] The root systems of C. dactylon

V. zizanioides

and A. fruticosa can play a significant role in soil fixing. Owing to their root distribution

soil fixing depth

soil fixing methods

the three plants have different soil-fixing functions. The three plants can be combined for planting

which is not only beneficial to the stability of riverbank slopes

but also improves the soil erosion resistance.

关键词

Keywords

references

陈文乐,杜鹃,方迎潮,等.泥石流频发区典型乔灌植物根系的固土效应[J].水土保持通报,2019,39(5):32-39.

吴宏伟.大气-植被-土体相互作用:理论与机理[J].岩土工程学报,2017,39(1):1-47.

钟荣华,鲍玉海,贺秀斌,等.三峡水库消落带4种草本根系抗拉特性及根系粘聚力[J].水土保持学报,2015,29(4):188-194.

张强.黑沙蒿根-土复合体土工特性研究[D].内蒙古呼和浩特:内蒙古农业大学,2019.

张伟伟, 吴玉柏, 纪建中, 等. 降雨入渗条件下黄河古河道草本植物护坡效应分析[J]. 中国农村水利水电, 2016(11):151-155,159.

曹云生,陈丽华,盖小刚,等.油松根系的固土力学机制[J].水土保持通报,2014,34(5):6-10.

孟飞.河道植物护岸耐冲性研究[D].辽宁沈阳:沈阳农业大学,2017.

吴鹏,谢朋成,宋文龙,等.基于根系形态的植物根系力学与固土护坡作用机理[J].东北林业大学学报,2014,42(5):139-142.

欧阳前超,魏杨,周霞,等.土石山区护坡草本植物根系抗拉力学特性[J].中国水土保持科学,2017,15(4):35-41.

刘秀萍,陈丽华,陈吉虎.刺槐和油松根系密度分布特征研究[J].干旱区研究,2007,24(5):647-651.

Jin Huifang, Shi Dongmei, Zeng Xiaoying, et al. Mechanisms of root-soil reinforcement in bio-embankments of sloping farmland in the purple hilly area, China[J]. Journal of Mountain Science, 2019,16(10):2285-2298.

De Baets S, Torri D, Poesen J, et al. Modelling increased soil cohesion due to roots with EUROSEM[J]. Earth Surface Processes and Landforms, 2008,33(13):1948-1963.

Fu Jiangtao, Hu Xiasong, Brierley G, et al. The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China[J]. Journal of Mountain Science, 2016,13(5):785-801.

Vannoppen W, Vanmaercke M, De Baets S, et al. A review of the mechanical effects of plant roots on concentrated flow erosion rates[J]. Earth-Science Reviews, 2015,150:666-678.

Genet M, Stokes A, Salin F, et al. The influence of cellulose content on tensile strength in tree roots[J]. Plant and Soil, 2005,278(1/2):1-9.

许锐,郭璐,李寻昌,等.延安地区黑沙蒿生长特征及护坡效应研究[J].铁道工程学报,2015,32(9):19-24.

黄海,陈正汉,李刚.非饱和土在p-s平面上屈服轨迹及土-水特征曲线的探讨[J].岩土力学,2000,21(4):316-321.

杨钢.非饱和土试样优选及循环荷载作用下的变形特性研究[D].大连:大连理工大学,2013.

周萍,文安邦,严冬春,等.三峡库区紫色土坡耕地草本植物根系固结地埂的土力学机制[J].水土保持学报,2017,31(1):85-90.

Li Yunpeng, Wang Yunqi, Ma Chao, et al. Influence of the spatial layout of plant roots on slope stability[J]. Ecological Engineering, 2016,91:477-486.

贺隆元,潘昆,陈春武,等.生态护坡技术在云南省水利工程中运用的探讨[J].林业建设,2015(4):142-145.

高至国,矫之明,胡湘,等.牡丹江河道生态护岸研究[J].黑龙江水专学报,2010,1(3):67-69.

马亮.河道整治中生态护岸的设计及应用[D].苏州:苏州大学,2014.

顾向阳,顾竹珺,李飞鹏,等.河道生态护岸设计中的底泥固化技术中试[J].净水技术,2018,37(3):107-112.

周云艳,陈建平,王晓梅.植物根系固土护坡机理的研究进展及展望[J].生态环境学报,2012,21(6):1171-1177.

孟飞.河道植物护岸耐冲性研究[D]. 沈阳:沈阳农业大学,2017.

Tardieu F, Draye X, Javaux M. Root water uptake and ideotypes of the root system:Whole-plant controls matter[J]. Vadose Zone Journal, 2017,16(9):1-10.

Views

1115

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Comparison of Shear Strength of Root-Soil Composite for Three Types of Slope Protection Vegetation

Structure and shear strength of amorphous iron oxide-kaolinite cementation system in red soil

Shear Strength Characteristics of Root—Soil Composites Under Bearing Pressure Condition of Soil Pore Water

Effects of Freeze一Thaw Cycle on Mechanical Properties of Black Soil

Effect of EN-1 Soil Stabilizer on Soil Shear Strength

Related Author

WEI Hua-wei

LUO Guang-jie

LUO Xu-qiang

LIAO Jing-jing

Zhang Yue

Huang Yanhe

Jiang Fangshi

Lin Jinshi

Related Institution

College of Geography and Tourism Guizhou Normal College Guiyang Guizhou China

Baiyun District Environmental Monitoring Station Guiyang Guizhou China

College of Resources and Environmental Sciences， Fujian Agriculture and Forestry University

Institute of Water Resources for Pasturing Area of the Ministry of Water Resources

College of Ecology and Environmental Science,Inner Mongolia Agricultural University

⁰