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针对半干旱地区公路岩质边坡的生态恢复难题,以内蒙古赤峰-通辽高速公路某岩质边坡为例,采用保育块技术与客土喷播技术相结合的方法构建以木本(灌木)为主、草本植物为辅的坡面植物群落。试验结果表明,此方法可使木本植物成活率达到60%以上且长势良好;草本植物生长茂盛,地上部生物量达自然阴坡生物量水平;物种构成以木本植物和多年生草本植物为主,群落稳定且植被覆盖度高于70%;移植的保育块树苗的根系结构与天然树木相似,具有主根发达、侧根不多但较强壮、根系呈网络状深入土中等特征。
Aiming at the problem of ecological restoration of highway rock slope in the semi-arid area, taking a rock slope of Chifeng-Tongliao Expressway in Inner Mongolia as an example, the paper takes the woody (shrub) Based, herbaceous supplemented slope plant community. The results showed that this method could make the survival rate of woody plants reach more than 60% and grow well; the herb plants grew well and the aboveground biomass reached the natural shady biomass level; the species composition was mainly woody plants and perennial herbs , The community is stable and vegetation coverage is higher than 70%. The root system of the nursery seedlings in nursery is similar to natural trees, with developed main roots, few lateral roots but strong roots and meshed network.