【摘要】 目的了解和掌握浐灞生态区内来自国外的植物物种,分析其可能的危害程度,为区域内的生态建设和恢复提供基本资料。方法采用野外调查法调查植物物种,根据文献资料筛选外来物种并进行分析。结果浐灞生态区共有外来植物19种,其中包括引种栽培的英国梧桐、法国梧桐、胡桃、半枝莲、刺槐、紫穗槐、白三叶、三色堇、西洋菜、石榴、火炬树、红花酢浆草、五叶地锦、金叶女贞、一串红、万寿菊、野牛草等17种,逸生的野胡萝卜和一年蓬2种。结论对浐灞生态区的生态环境会造成潜在危害的种有刺槐、紫穗槐、白三叶、野胡萝卜、一年蓬和野牛草6种,上述物种的结实量大,易于扩散,不易控制;半枝莲、西洋菜、红花酢浆草和万寿菊4种在栽培时也需要加以注意,但扩散的概率较小;英国梧桐等9种均不构成威胁。更多还原

【Abstract】 Aim To understand the alien plant species,analyze the possible influence on the environment and supply the basic information to the ecological construction and restoration of Chan-Ba Ecological District.Methods The plant species were surveyed in the field,the specimens were identified and the possible influence was analyzed according to the reference.Results There are 19 plant species which were introduced or escaped in Chan-Ba Ecological District.Conclusion Among the 19 alien species,Robinia pseudoacacia,Amorpha fruticosa,Trifolium repens, Daucus carota,Erigeron annuus and Buchloe dactyloides may cause possible ecological damage because they have many fruits in a individual and are difficult to control,Portulaca grandiflora,Nasturtium officinale,Oxalis corymbosa and Tagetes erecta need to pay attention when cultivated,while other 9 species are safe to the environment of Chan-Ba Ecological District.更多还原