辽宁外来入侵植物种类组成与分布特征的研究

Study on types composition and distribution characteristics of alien invasive plants in Liaoning

通过对辽宁外来入侵植物的调查,报道外来入侵植物种类。并对外来入侵植物的原产地、分布特点、引入途径等进行分析。结果表明辽宁目前有51种外来入侵植物:①隶属于17科35属。其中菊科为优势科,所含种数为11种,占外来入侵植物总种数的21.8%;②来自美洲的植物29种,占总种数的56.9%;来自于欧洲的外来入侵植物有10种,占外来入侵植物总种数的19.6%;③在辽宁的分布特点是大连地区分布种数最多为43种,其次是沈阳地区为40种;④有30种是人为有意引进,占外来入侵植物总种数的58.8%。15种是属于无意引进造成的,占总种数的29.4%。

Based on our survey, the species of alien invasive plants are reported in this paper. And the composition, origin area, distribution and pathway of alien invasive plants in Liaoning are discussed. The results show that： ①there are 51 species belonging to 17 families, 35genus. There are 11 species in the largest family Compositae.②There are 29 species from America and 10 species from Europe. The harm of the invasive plants from the America is heavier than those from other aress.③43 species are distributed over Dalian areas and 40 species distributed over Shenyang areas. ④30 species of the alien invasive plants in Liaoming are intentional introduction, and 15 species are unintentional introduction.