A research report shows that with the economic development and reform and opening up, almost all the units related to planting and breeding in China have projects to introduce species from abroad. However, lotus-chinensis introduced as fodder in east China and spartina for beach protection in coastal provinces of China quickly spread and grew rapidly, invading grassland, forest areas and wasteland, forming dominant community of single species, resulting in the decline of the original plant community. Italian black bees introduced into Xinjiang quickly spread to the wild
that the original fine wasp species Of Ili black bees almost extinct. So  hold
Efforts should be made to control the spread of plants such as lotus seed and spartina.