The invasion of exotic plants and effects of ecosystems
植物外来种入侵及其对生态系统的影响

The invasions of exotic plants and their effects of ecosystems were reviewed and analyzed.There are many factors which can effect plant invasions.Some of them can promote invasions of plants,while other factors can inhibit invasions.All factors can be divided into internal factors and external ones.The effects of exotic species to ecosystems are mainly on the productivity,soil,water,disturbance,community structure and dynamics.We should research the characters and effect factors of exotic plants,then integrated approach can be couducted to control the plant invasion.The exotic species behaviors and life cycle should be clarified before its introduction for safety.