Abstract: Haloxylon ammodendron was the most important dominant plant in Junnger basin.On the basis of investigation results of typical Haloxylon ammodendron communities, the classification of these communities was carried on according to the similarity among communities by using numerical cluster.The results suggested that all 37 communities were included in 11 plant associations.According to the results of cluster analysis, 11 plant associations were included in 5 formations.The results of classification analysis were basically consistent with the traditional classification of Haloxylon ammodendron communities.The researching results was meaning for protection and restoration of Haloxylon ammodendron community in the future.

Key words: Haloxylon ammodendron community, similarity, classification analysis, association, formation