Invasive Plants in Guangzhou, China Alien Plants in Shanghai and the Rating of Their Invasion Spatial Patterns of Floristic Composition of Invasive Alien Plants in Large Scale and Their Climatic Interpretation Ecological security assessment of intro-ducing aquatic macrophytes The alien invasive plants in Guangxi Breeding system of a noxious invasive alien plant, Ambrosia artemisiifolia L. Diversity differentiation of invasive plants at a regional scale in China and its influencing factors: accroding to analyses on the data from 74 regions