摘要
针对公路边坡植被恢复过程中,实生苗灌木在草灌混播群落中生长困难的问题,应用生态学实验方法,以灌木柠条为代表进行草本-灌木混播配置模式实验研究。研究表明:适当低密度草本植物可增加柠条出苗率;草本植物覆盖度影响柠条生长能力及存活率,柠条生长最适群落覆盖度为30%;草灌混播群落中,柠条存活的草本植物密度上限为750株/m2;草本植物对柠条生长和形态产生重要影响,其竞争抑制作用是自下而上发生的。
In the grass-shrub mixed planting community,typically,growing difficulty of seeding shrubs make vegetation restoration of highway side slope a problem.To provide theoretical and technical basis for successful planting of grass-shrub community ecological experimental methods was used by taking Caragana microphylla as representative.The results showed that:Proper low density of herbaceous plants could increase emergence rate of Caragana microphylla;the coverage of herbaceous plants affected growing ability and survival rate of caragana microphylla,the optimum coverage of herbaceous plants in the community was 40%;in grass-shrub mixed planting community,the upper limit of herbaceous plant density to the survival of Caragana microphylla was 750 per square meter;the inhibitory effects from herbaceous plants on the growth of Caragana microphylla often began from the lower part to the upper part of Caragana microphylla.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第6期70-73,共4页
Journal of Wuhan University of Technology
基金
交通部西部交通建设科技项目(200631800087)
关键词
公路边坡
植被恢复
草灌混播
配置模式
highway side slope
vegetation restoration
grass-shrub mixed planting
disposition model