Abstract: The article discussed the spatial pattern dynamics of tree species of secondary theropencedrymion managed in means of "Reserving Mother Tree Group"(RMTG) in different time, by using the way of "Time Instead of Space" and fractal theory. The result indicated that the space holding capacity of tree layer was enhanced and tended to be stable gradually as time went on, and the closure of multiple tree layer has been formed, moreover Pinus koraiensis, Tilia spp and Fraxinus mandshurica hold the dominance. On the contrary, the space holding capacity of shrub layer was decreased and tended to be stable quickly, and the thriving of the photophilus shrubs was disappeared;the typical theropencedrymion shrub species such as Syringa amurensis, Philadelphus schrenkii and Acanthopanax senticosus covered the dominance. All these manifested the RMTG management has accelerated the succession of stands to typical theropencedrymion.

Key words: Dynamics management, Spatial pattern, Fractal analysis