Abstract: The typical sample plot method is used to investigate the semi-natural plant communities of Beiling Park in Shenyang and the structural characteristics are analyzed.The result shows that Rosaceae is the most in number in terms of semi-natural community.There are both total community and single community;Phanerophytes plant is most in number in semi-natural community,accounting for 55.26% of the total number.There are obviously tree,shrub,grass three-layer structure on the vertical structure of semi-natural community,species of advantages show an aggregated distribution.The semi-natural communities in Beiling park belongs to the deciduous broad-leaved mixed forest,with four different seasonal variations.

Key words: semi-natural communities, community structure, Shenyang, Beiling Park