Fig. 6
From: Dynamics of gaps and large openings in a secondary forest of Northeast China over 50 years
Closing process of newly formed large gaps and medium gaps in the following years, after they appeared in different observation intervals. F Forest, G gap, NL-Total number of newly formed large gaps, NM-Total number of newly formed medium gaps, NL-F number of large gaps that transformed to forest at each following time period, NM-F number of medium gaps that transformed to forest at each following time period