唐建超 陈巍 黎志权

摘 要：文章研究了绥正高速公路植被混凝土护坡绿化植物的生长特征。研究结果表明，植株存活率均达到60%以上，草类植株株高在生长前期增率较灌木大，生长趋势为“上凸型”；灌木在生长后期株高生长增率远远大于草，生长趋势为“下凹型”。植株根系的生长特征可直接表明植株的护坡作用，根系随时间周期的增加，逐渐形成主根、侧根根系和边坡交结的网状结构，草类植物根系在前期生长特征变化较灌木显著。植被混凝土绿化技术在该地区生长情况较好，在达到具有自然生态系统结构目标的同时，并能较好的发挥护坡作用。

关键词：植被混凝土护坡绿化；生长特征；边坡生态修复；绥正高速公路

中图分类号：U417.2 文献标志码：A 文章编号：2095-2945（2018）33-0011-04

Abstract： In this paper， the growth characteristics of vegetation concrete greening plants on the slope of Suiyang-Zheng'an Expressway are studied. The results showed that the plant survival rate was above 60%， the growth rate of grass plant height was higher than that of shrub at early growth stage， and the growth trend of shrub was "convex"， and the growth rate of shrub at late growth stage was much higher than that of grass， and the growth trend of shrub was "concave". The growth characteristics of plant roots can directly indicate the slope protection effect of plants. With the increase of periods of time， roots gradually form a network structure of taproot， lateral roots and the intersection of the slope. The growth characteristics of grass roots change more significantly than shrubs in the early stage. The vegetation concrete greening technology grows well in this area， and can achieve the goal of natural ecosystem structure； at the same time， it can play a better role in slope protection.

Keywords： vegetation concrete slope protection greening； growth characteristics； slope ecological restoration； Suiyang-Zheng'an Expressway

引言

随着我国西部地区交通、水利及房建项目的大力度开发，大量山体需要开挖，根据地质特点，山体开挖后坡面85%为岩石坡面，岩质大多为灰岩和泥岩，岩体形态为完整石质、破碎石质和土夹石等形态。植被混凝土绿化技术的应用能在进行坡面浅层防护的同时起到生态恢复的作用，其基质强度0.3MP，能抗100MM/H暴雨冲刷，年流失率低于1%[1]。在高速公路施工中，为保证进度，通常是全年施工，植被混凝土绿化技术中的植物草种和灌木生长是有周期性的，特别是在边坡上生长的植物，受到养护手段少的影响，生长更接近原生态。植物根系的生长情况对植被边坡的护坡作用和生态景观效果有显著影响[2]。……