Abstract:The global alien invasive species have induced increasingly severe economic and ecological problems. And the human-caused sustained habitat destruction and restoration bring on the even more complicated alien invasion process and species diversity persistence. Both invasive species and sustained habitat change are introduced into Tilman′s multispecies coexistence model and a disturbance model of biological invasion under sustained habitat change is also proposed in this paper. Then, the alien invasion and its impact on native species under three circumstances, i.e., no habitat changes, sustained habitat degradation and sustained habitat restoration, are respectively simulated numerically. The results show that: (1) Alien species with weak colonization could not adapt itself to new habitat and is excluded from indigenous community, and sustained habitat changes have no impact on the invasive dynamics. (2) The dynamics of alien species with greater colonization is rather perplexing, as sustained habitat degradation make it survive longer than that with no habitat change, while sustained habitat restoration make it much shorter. Consequently, alien species of this kind could be cleared up through sustained habitat restoration during certain period of time. (3) When the colonization is strong enough, alien species would succeed in colonizing new habitat and develops new population just within several years. Its rapid invasive and dispersal colonization process will not be changed by habitat destruction, as its response to habitat degradation has a time delay. Habitat restoration is also helpful to alien species, whose occupancy displays linear increase. (4) In the native ecosystem with alien invasion, sustained change of habitat state is considerably disadvantages to the native species diversity persistence.