高速公路边坡暖季型草本植物生态适应性评价

Ecological Adaptability Evaluation of Warm-Season Herb Plants of Highway Slope

为优化、筛选适合高速公路边坡的植被,以广河高速公路边坡建植为研究对象,开展高速公路边坡暖季型植被物种选择研究.通过对当地的8种暖季型草本植物进行播种试验,并运用层次分析法进行植物物种的生态适应性评价.结果显示,8种暖季型草本植物中,以香根草、狗牙根、百喜草为最佳,具有较好的生态适应性和护坡功能,结缕草和中华结缕草次之,马尼拉草和狼尾草最差.因此,在广河高速公路边坡植被护坡中,暖季型草本植物建议选择香根草、狗牙根和百喜草.研究结果可为广州乃至亚热带地区高速公路边坡建植提供理论依据和技术支撑.

In order to optimize the selection of suitable vegetation group for the Guanghe highway slope,a combined experiment on the local well-grown herb vegetation was conducted. Through seeding experiment of eight kinds of warm-season herb plants in the local area combined with analytic hierarchy process(AHP),the ecological adaptability was evaluated. Results indicate that,among the eight kinds of warm-season herb plants,Vetiveria zizanioiaes,Cynodondactylon(Linn.) Pers and Paspalum notatum are the best plants which have better ecological adaptability and slope protection function; Zoysia japonica and Zoysia sinica Hance are the second,and the Zoysia matrella and Pennisetum alopecuroides(L.) Spreng are the worst. Therefore,it is suggested that the warm-season herb plants of Vetiveria zizanioiaes,Cynodondactylon(Linn.)Pers and Paspalum notatum should be chosen as the Guanghe highway slope protective vegetation.The research results provide a theoretical foundation and a technical support for Guangzhou and other subtropical zones.