Through the investigation of urban trees in Tongliao city Korqin distract, the main species belongs to 27 families, 51 genera, 79 species, 6 variety, 11 cultivar.

From space postitions, significant change area is northwest of Tongliao city and west and northeast of Xilinhot, and the area of Tongliao city around and Hulunbuir is also significant change area.