植物纤维毯覆盖对公路边坡植被重建的影响

发布时间：2018-03-04 22:24

本文选题：环境工程　切入点：植物纤维毯　出处：《公路交通科技》2017年02期 　论文类型：期刊论文

【摘要】：为了研究不同材质的植物纤维毯早期覆盖对植被重建的效应,在河北石(家庄)-安(阳)高速公路边坡开展了3种材质的植物纤维毯覆盖下的草灌混播群落建成效果小区试验。以传统植被修复中采用的无纺布覆盖为对照,研究覆盖对早期植被群落的出苗与生长性能、抗逆性及后期生长势等的影响,分析了植物纤维毯对土壤微环境的改良效应。结果表明:覆盖材料间对植物出苗率及植被初期覆盖度有显著差异,稻草毯、混合毯优于无纺布,椰丝毯表现较差;植物纤维毯覆盖提高了植株越冬与越夏表现,冬季毯表株数比由低到高依次为无纺布、稻草毯、混合毯、椰丝毯;植物纤维毯覆盖对次年植被生长密度、植被覆盖度等指标均有较好作用,各处理的均值均较无纺布高;植物纤维毯覆盖对种子早期发芽与穿透较传统方式阻碍效应明显,但对土壤微环境更具有改良效应,可缓冲土壤温度变化幅度,有利于增加了地表粗糙度,保持水土及种子,从而可提高植被综合质量表现,实现植被成坪。
[Abstract]:In order to study the effect of early covering with different materials of vegetable fiber blanket on vegetation reconstruction, A plot experiment was carried out on the slope of Shizhou-an (Yang) Expressway in Hebei Province under the covering of three kinds of plant fiber blanket. The effect of mixed planting community of grass irrigation and irrigation was compared with that of non-woven cloth covering used in the traditional vegetation restoration. The effects of mulching on emergence and growth performance, stress resistance and growth potential of early vegetation community were studied. The effects of vegetable fiber blanket on soil microenvironment were analyzed. The results showed that there were significant differences between mulching materials on plant emergence rate and initial vegetation coverage, straw blanket and mixed blanket were superior to non-woven cloth, and coconut blanket was worse. The plant overwintering and over-summer performance were improved by plant fiber blanket covering. The order of plant number ratio from low to high in winter was non-woven cloth, straw blanket, mixed blanket, coconut blanket, plant fiber blanket covering on the density of vegetation growth in the following year. Vegetation coverage and other indexes had a better effect, the average value of each treatment was higher than that of non-woven cloth, the effect of vegetable fiber blanket mulching on seed germination and penetration in early stage was more obvious than that in traditional way, but it had more improvement effect on soil microenvironment. The range of soil temperature can be cushioned, which can increase the roughness of surface, conserve soil and water and seeds, thus improve the comprehensive quality of vegetation and realize the formation of vegetation.
【作者单位】：交通运输部科学研究院;河北省京港澳高速公路京石段改扩建筹建处;
【基金】：河北省交通运输厅科技项目(Y-2012006)
【分类号】：U416.14

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