【摘要】 全球变化包括大气臭氧层的损耗、CO2等温室气体排放增加、气候增暖、土地利用和覆盖变化、生物多样性丧失以及外来种入侵等因子。植物入侵与其它全球性变化因子间有复杂的相互作用:大气CO2浓度增加将导致C3植物比C4植物竞争力更强,低营养生态系统会变得更易入侵。变化的气候条件下,许多种类面临迁移或外来问题,土壤变暖也将使许多休眠植物改变习性。增加紫外辐射将使一些植物的生长和生产力减少,进而会对其竞争和生态过程有间接的影响。CO2浓度升高时硫酸盐的沉积可以增强C3植物的竞争力。较致密的生境破碎化后,一些入侵种可通过边缘进一步向群落内部入侵。增加或降低典型干扰的频率和强度及引入新干扰,能促进外来种的定居和扩散。植物、动物和微生物间的关系改变对植物入侵的速率和效果有明显影响。世界性贸易和运输为生物的入侵提供了条件。更多还原

【Abstract】 Ozone deletion, increase of emission of green house gas (egCO2), climate warming, land use and vegetation cover change, loss of biodiversity, and species, etc., invasion are the main factors of global change. The interaction between plant invasion and other global change factors are complicated. The increase of concentration of CO2 will lead to the stronger competitive capacity of C3 plant than that of C4 plant. Increase of ultraviolet radiation will decrease the growth and productivity of some plants and at last impact the process of ecosystem. Increase of CO2 concentration and air pollution together can enhance the competitiveness of C3 plants. Fragmentation of compacted inhabitant is easy to be invaded by invasion plant through edge effect. The increase of frequency and strength of disturbance will promote the colonization and dissemination of exotic species. The change of relationship among plant, animal and microbe also can influence the speed and rate of plant invasion. In addition, the world trade and transportation provide a good chance for the invasion plants to intrude into other regions. 更多还原