A Preliminary Study on Evaluation Model of Bullacta exarata Invasion in the Yellow River Delta

摘要

In recent years, with the rapid development of Chinese economy and the increase of the immigration, more and more alien species which cause a certain ecologic influence on the local area are coming in China. Risk assessment is the first step to prevent invasion of alien species, which is one the most effective measures. Ecological risk of alien species Bullacta exarata in Yellow River Delta was evaluated by this article. The model of risk assessment of Bullacta exarata was suggested. The invasion risk of Bullacta exarata evaluation index system was explored, hoping to provide reference for risk assessment of invasive alien species.