This paper discusses and identifies the concepts of alien species and alien invasive species;

讨论并界定了外来种和外来入侵种的概念；

In the studies of ecological security, alien invasive species is one of the important factors.

在当前生态安全这一前沿问题研究中, 外来物种入侵是影响生态安全的重要因素.

Recently this alien invasive species has been introduced in China and threatened the agricultural production.

近年来该害虫传入我国， 对农业生产构成严峻威胁。

The key principle of international environment law is to prevent the risks and harms before the alien invasive species bring. The implementing regimes will help people …

防治生物入侵的国际法核心原则是风险与损害预防原则，环境影响评价和风险评估制度等是该原则得以实现的机制保障。