We investigated the invasive plants in twelve districts and counties in Beijing to study the distribution patterns and their influcing factors of these invasive plants. Based on the GIS technology and the curve regression analysis, the horizontal and vertical distribution patterns of the invasive species were analyzed. The correlation analysis for the invasive species and influcing factors which include human activities and circumstance, were also carried out. The results showed that there are total 47 species of invasive plant species in Beijing. It included three types of invasives species, which include the officially announced invasive species, concerned species and controversial species. The most widely distributed species are Amaranthus retroflexus, Pharbitis hederacea, Pharbitis purpurea, Bidens pilosa, Eleusine indica, Pharbitis nil, Rhus typhina, Robinia pseudoacacia, and etc. Especially for Ambrosia artemisiifolia and Ambrosia trifida,which have posed huge threats to human health, exist in five investigated villages and towns. Moreover, there were significantly differences of amounts of these plants among twelve districts and counties. The invasive species have significantly spread much more in
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.