西安地区外来入侵植物的调查研究

摘要:通过调查和对大量文献资料的整理和分析,初步确定西安地区“中国重要外来有害植物”有68种,隶属于20科,其中菊科的种类最多,有14种,其次是禾本科和豆科,各有10种。从来源看,有30种来源于美洲,其他种来源于欧洲、亚洲、非洲等地区。其中对于本地区有入侵行为的46种外来植物大部分为草本，基本上属于田间杂草，还包括1种被列为我国的检疫杂草,即毒麦。调查分析了西安地区外来植物的分布、生境和危害程度，对本地入侵植物的主要特点进行了讨论，并提出了相应的防治措施。

A investigation of alien invasive plants in Xi’an area

Through wide investigation and analysis for huge information and document, there were 68 species plants that could be considered for ＂Chinese important alien invasive and pernicious plants＂ in Xi＇ an area. These plants belonged to 20 families. 14 were composite. 10 were leguminous plant. 10 were grass. 30 species of these plants originated from America. Others from Europe, Asia and Africa. Most of the 46 alien plants that had invaded this area were herb, and mainly field weeds. There was one species that was sorted in quarantine plant （darnel）. The distribution, ecological environment, extent of injury of these alien invasive plants are studied. The main characters of local invasive plants are discussed. Proper prevention measure is proposed also.