In recent years, the environmental and ecological risks mediated by invasive plants have become increasingly prominent. Therefore, elucidating the key driving mechanisms behind the successful invasion of invasive plants has become one of the major cutting-edge scientific issues of current concern in the field of invasive ecology.

More importantly, after a successful invasion of an invasive plant, it can create a favorable microenvironment for other invasive plants to successfully invade, which can significantly increase the probability of other types of invasive plants successfully invading, leading to the joint invasion of two or even multiple invasive plants in the same habitat. In other words, different types of invasive plants can interact with each other and participate in a new architecture of multi species ecological interaction networks, mutually benefiting each other's invasion processes. This can lead to habitats that have already been successfully invaded by one invasive plant being more susceptible to successful invasion by other types of invasive plants, thus forming the Matthew effect in the process of biological invasion and potentially causing new, more complex, and severe ecological impacts on environmental health and ecological security.

Although other types of invasive plants can also form co invasions in the same habitat, the frequency of formation is relatively low, and the area of co invasive plant communities formed is also relatively small. However, invasive plants of the Asteraceae family (regardless of whether they can be cloned and reproduced) often form co invasions in the same habitat, with a relatively higher frequency of formation. The area of the co invasive plant community formed by them is relatively larger, the community density is higher, the impact range is wider, and the environmental and ecological risks are stronger. Especially in southern Jiangsu, many invasive plants of Compositae family, such as Solidago canadensis, Erigeron spring, Erigeron breviscapus, Sumen Baijiu grass, Bidens bipinnata, Razor magnolia and Ambrosia artemisiifolia, often form a common invasion in the same habitat, and the area of the common invasion plant community is relatively larger, such as the common invasion of two invasive plants of Compositae family, three invasive plants of Compositae family, and even more invasive plants of Compositae family.

Therefore, it is urgent to deeply analyze and clarify the environmental and ecological effects and key driving mechanisms of the joint invasion of multiple invasive plants in the Asteraceae family, in order to lay a strong theoretical support and scientific basis for effective environmental risk assessment, early warning and prevention.