Effects of an alien species (Spartina alterniflora) on soil microorganism diversity in salt marshes,Jiangsu coastal inter-tidal ecosystem;

This paper discusses and identifies the concepts of alien species and alien invasive species;reports 53 species of alien species of plants in Henan Province,including Chenopodium pumilio R.

In this article, some concepts about biological invasion were presented and the process of alien species change to invasive species was summarized and primary types of biological invasion were concluded.

Biological invasion, exotic species, native species,invasion ecology and related concepts were discussed.

There were twenty exotic species for gardens in Changchun city,of which woody and liana plants were total 11,and the distributions of the 11 plants were investigated.

Two forest specialists showed significant increase in densities, one is native and the other is exotic species.

Distribution of an exotic plant Spartina alterniflora in Shanghai;

) Griseb(Amaranthaceae) is an invasive species in China.

Effect of exotic species Mytilopsis sallei on macrozoobenthos in the Maluan Bay,Xiamen in China;

Metapopulation model of multispecies competitive coexistence given exotic species invasion

This paper points out that the aggression of exotic species quickens the forfeiture of the living thing’s varieties, and destroys the ecosystem, and threatens human's health, and causes great loss of the economy, so it brings the side effect to the sustainable development and the human society.

Research on allelopathic effects of Oxalis corymbosa——an invasive species;