深圳的外来植物

Exotic plants in Shenzhen, China

通过对深圳外来植物调查 ,报道了深圳 1 0 2种外来植物 ,约占深圳植物种类总数的 1 0 % ;并对深圳 1 0种危害较大的外来入侵植物进行了简要介绍。通过对深圳外来植物区系的种类组成、原产地、生长型、生境和危害程度的分析 ,结果表明 :(1 )外来植物的入侵对深圳的自然生态系统的影响较小 ,对人工林或人为干扰严重的生态系统的影响较大 ;(2 )来自新大陆热带地区的外来植物对深圳容易入侵并造成较大危害 ;(3 )草本和藤本植物具有较强的入侵能力 ,高大乔木的入侵能力小 ,造成的危害程度也较小。

Based on our survey on the exotic plants of Shenzhen, 102 species of exotic plants with the introduction of 10 important invasive species, about 10% of total wild plants, are reported in this paper. And the composition, origin area, growth form and habitat of exotic plants in Shenzhen are discussed in this paper. The results show that: (1)The affection of ecological invasion are more serious in artificial forest or disturbed ecosystem than in natural ecosystem; (2)The harm of the invasive plants from the New World is more heavy than those from other areas; (3)The invasibility and harmful degree of trees are less serious than those of climbs and herbs.