Gap characteristics in the mixed broad-leaved Korean pine forest in Xiaoxing’an Mountains Gap formation features of humid evergreen broad-leaved forest in central subtropical Wawushan Mountain,Sichuan Province,China Characterization of mid-subtropical evergreen broad-leaved forest gap based on light detection and ranging (LiDAR). Gap Related Disturbance in Mixed Mountain Forests at Mt. Dalaoling in the Three Gorges ¢ò. Topographic Patterns