Abstract: Based on the TWINSPAN classification,the relationship between the shrub communities in Urumqi and the main environmental factors were analyzed by CCA. The results are as follows: ① CCA biplots revealed that the distribution pattern of shrub communities was most strongly associated with environmental factors,and they reflected clearly the habitat gradient of shrub communities; ② The effect of elevation on the distribution of shrub communities was more significant than that of soil environment factors; ③ In the soil environment factors,the effect of total salt content on the distribution of shrub communities was the most important,and that of total phosphorus was the lowest; ④ The shrub communities were likely to survive in coarse soil; ⑤ The distribution pattern of mountainous shrubbery and shrub desert was strongly affected by the topsoil properties,and the effect of shallow-moderate and deep soil properties was low.

Key words: shrub community, soil environment, CCA, Urumqi