[1]熊丹伟,陈芳清*,谭向前,等.实验条件下紫羊茅种群植被混凝土的固土护坡性能[J].山地学报,2021,(2):207-217.[doi:10.16089/j.cnki.1008-2786.000588]
 XIONG Danwei,CHEN Fangqing*,TAN Xiangqian,et al.Performance of Festuca rubra L. Population Vegetation Concrete in Soil Conservation and Slope Reinforcement under Experimental Conditions[J].Mountain Research,2021,(2):207-217.[doi:10.16089/j.cnki.1008-2786.000588]
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实验条件下紫羊茅种群植被混凝土的固土护坡性能()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2021年第2期
页码:
207-217
栏目:
山地灾害
出版日期:
2021-03-25

文章信息/Info

Title:
Performance of Festuca rubra L. Population Vegetation Concrete in Soil Conservation and Slope Reinforcement under Experimental Conditions
文章编号:
1008-2786-(2021)2-207-11
作者:
熊丹伟1陈芳清1*谭向前1李双洋1黄永文2
1.三峡大学 湖北省三峡地区生态保护与治理国际联合研究中心,湖北 宜昌 443002; 2.湖北正江环保科技有限公司,湖北 宜昌 443002
Author(s):
XIONG Danwei1 CHEN Fangqing1* TAN Xiangqian1 LI Shuangyang1HUNAG Yongwen2
1.Hubei International Scientific and Technological Cooperation Center of Ecological Conservation andManagement in Three Gorges Area, China Three Gorges University, Yichang 443002, Hubei, China; 2. Hubei Zhengjiang Environmental Engineering and Technology Co., Ltd., Yichang 443002, Hubei, China
关键词:
植被混凝土 紫羊茅 截留效应 抗剪性能 抗侵蚀性能
Keywords:
vegetation concrete Festuca rubra L. interception effect shear resistance erosion resistance
分类号:
Q948.11
DOI:
10.16089/j.cnki.1008-2786.000588
文献标志码:
A
摘要:
植被混凝土是一种近年来在工程边坡治理中广泛应用的生态防护新技术。植物在植被混凝土不同生长时间固土护坡性能的变化还不清楚。本研究以紫羊茅为对象构建了植被混凝土,通过模拟边坡生长条件,测定紫羊茅植被混凝土在不同生长时间植物地上部与地下部生长特征、茎叶截留效应、以及根土复合体抗剪切强度、抗侵蚀性和根系抗拉强度,揭示了紫羊茅植被混凝土的固土护坡特性及其时间动态,以促进紫羊茅植被混凝土技术的应用。结果表明,紫羊茅的生长状况在成熟期(135~180 d)达到最佳。随着生长时间的延长,紫羊茅茎叶最大截留量逐渐增加,而茎叶最大截留率则呈先增加后减少的变化趋势。茎叶最大截留率在植被生长成熟期(180 d)达到最大值(72.27%),比生长初期(45 d)高33.24%。紫羊茅根系的存在能显著增强植被混凝土基材的固土性能,其抗剪性能和抗侵蚀性能与对照相比分别增加了74.17%和155.23%。植被混凝土的固土性能随着生长时间的延长而不断增加,在临近衰亡期(225 d)达到最大值,与生长初期相比则分别增加了152.55%和86.59%。本研究可为紫羊茅植被混凝土技术在山区工程边坡生态治理中提供参考。
Abstract:
Vegetation concrete is a new ecological protection technology which is applied widely in engineering slope treatment in recent years. Plants have important influence on the performance of vegetation concrete in soil conservation and slope reinforcement. In this study, Festuca rubra L. was used as a research object to construct experimentally vegetation concrete. By simulating the growth conditions of the slope, the growth characteristics of the aboveground and underground parts of F. rubra vegetation concrete at different growth times, the interception effect of the stems and leaves, and the shear strength, erosion resistance and root tensile strength of the root-soil composites were determined. It aims to reveal the characteristics of soil conservation and slope reinforcement of F. rubra vegetation concrete and its time dynamics, and promote the application of F. rubra vegetation concrete technology. The results showed that the growth status of F. rubra reached its best in the mature period(135~180 days). With the prolongation of growth time, the maximum interception of F.rubra stems and leaves gradually increased, and the maximum interception rate of stems and leaves showed a trend of first increasing and then decreasing. The maximum interception rate of stems and leaves reached the maximum(72.27%)during the mature period of vegetation growth(180 days), which was 33.24% higher than that of the early growth period(45 days). The existence of the root system of F. rubra significantly enhanced the performance of the vegetation concrete substrate in soil conservation. The shear performance and erosion resistance of F. rubra vegetation concrete increased by 74.17% and 155.23% respectively compared with the control. The performance of vegetation concrete in soil conservation increased continuously with the prolongation of growth time, reaching the maximum value near the decay period(225 days), and increased by 152.55% and 86.59% respectively compared with the initial growth period. This study provides reference for the application of F. rubra vegetation concrete technology in slope ecological treatment of mountain engineering.

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备注/Memo

备注/Memo:
收稿日期(Received date):2020-09-12; 改回日期(Accepted date):2021-03-05
基金项目(Foundation item):国家重点研发计划项目(2017YFC0504904-02)。[National Key Research and Development Program of China(2017YFC0504904-02)]
作者简介(Biography):熊丹伟(1996-),男,海南海口人,硕士研究生,主要研究方向: 恢复生态学。[XIONG Danwei(1996-), male, born in Haikou, Hainan province, M. Sc. candidate, research on restoration ecology] E-mail: 503398215@qq.com
*通讯作者(Corresponding author):陈芳清(1963-),男,博士,教授,主要研究方向:库区和工程扰动区的生态恢复。[CHEN Fangqing(1963-), male, Ph.D., professor, research on ecological restoration of reservoir area and engineering disturbance area] E-mail: fqchen@ctgu.edu.cn
更新日期/Last Update: 2021-03-30