Fig. 4From: Review on the succession process of Pinus densiflora forests in South Korea: progressive and disturbance-driven successionFrequency of the three succeeding groups (“Quercus only,” “Quercus & Others,” and “Others only”) in P. densiflora forests according to the geographical and moisture condition (n = 213). a Northern mesic forest. b Northern dry forest. c Southern mesic forest. d Southern dry forest. Frequency is indicated above each bar. C, canopy stratum; EC, extended canopy stratumBack to article page