江西三清山外来植物

通过野外调查和查阅文献，对江西三清山外来植物的种类组成、原产地、生活型、入侵途径等进行分析。结果表明，三清山外来植物有140种，隶属于47科103属，科属种数分别占三清山维管束植物总数的24.23%、11.73%和6.94%。其中外来入侵植物有31科56属82种，分别占外来植物总数的65.96%、53.85%、58.57%。以菊科、豆科、苋科、葫芦科、茄科、十字花科、藜科和旋花科为优势科；外来植物以美洲来源最多；生活型以陆生草本为主；引入途径以有意引入最突出；入侵危害程度以Ⅱ级为主。

Alien Plants from Sanqingshan Mountain in Jiangxi Province

Based on investigation and related literatures, the species composition, origin areas, life forms, invasive methods of alien plants were analyzed in Sanqingshan Mountain. The results showed that a total of 140 species were identified in alien plants, belonging to 103 genera in 47 families, accounting for 6.94%, 24.23% and 11.73% of the total amount of species, families and genera of vascular plants in Sanqingshan Mountain, respectively. Among them, a total of 82 species were identified in alien invasive plants，belonging to 56 genera in 31 families , accounting for 58.57%, 65.96% and 53.85% of the total amount of species, families and genera of alien plants. The dominant families were Asteraceae, Leguminosae, Amaranthaceae, Cucurbitaceae, Solanaceae, Cruciferae, Chenopodiaceae and Convolvulaceae. The alien plants were mainly from America. Terrestrial herbs were the primary in life forms. Intentionally introduced by human being was the main pathway. The main incursive injury was gradeⅡaccording to the damage grades of these species.