[Objective] To investigate the changes of spatial pattern of Juglans mandshurica and main accompanying speeies in different growth stages and the changes of spatial correlation between them,as providing theoretical guidance in the process of forest management.[Method]This research uses the method of point pattern of the Ripley 'K function,studing on the spatial distribution pattern and spatial correlation of species. [Result]At the age of juvenile Juglans mandshurica forest,there is interaction among poplar...