庐山外来植物物种

生物入侵正日益成为普遍关注的生态环境问题.在庐山野外调查的基础上,再结合庐山植物引种记录资料的分析,发现庐山引入的2285种植物中,有1301种是室外栽培的,其中有127种82属35科逸为野生,成为庐山的外来物种.通过对这127种外来物种从物种组成、生活型、引入时间和方式、原生地和入侵性进一步分析,可以看出:外来物种主要由菊科、玄参科、禾本科、石竹科和苋科组成,这5科含种数占到总种数的63%;外来物种绝大多数为草本植物,含114种,占总种数的86.76%;原生地主要来源北美洲、其次是欧洲和亚洲,大部分是有意引进,引种目的主要用于观赏,其次是药用;在庐山127种外来物种中,有70种是列于中国100主要外来入侵物种,可见其入侵性还是很强.

On the exotic plants in Lushan, Jiangxi Province, China

Biological invasion is becoming a pervasive eco-environmental problem.Based on the record analysis of the introduced plant species in Lushan and investigated in the field,we found that there were 2285 plants species introduced in Lushan,and 127 exotic plants among the 1301 plant species cultivated in the field.It makes up 8.89% of the cultivated and 5.56% of the introduced species.We analyzed the data on floristic composition,biological attributes,native range,and introduced time of the 127 exotic plants.It has been found that Compositae,Scrophulariaceae,Gramineae,Caryophllaceae and Amarathaceae were the families with the largest species composition because the species in these 5 families accounted for 86.76% of the total exotic plants.There are 114 herbs,making up 86.76%,among 127 exotic plants,so most of the exotics are herbs,Most of the exotics originated from North American,Europe and Asian and preliminary purpose was for ornament and medicine.About 70 species are listed in the 100 most invasive plant species in China.