Fig. 4From: Tree mortality and regeneration of Euphrates poplar riparian forests along the Tarim River, Northwest ChinaBoxplots of the DBH of dead trees and living trees on the grid charts in canopy gaps that were created at different times. The box encloses the middle 80% of observations. Median and mean values are indicated by a vertical line (−) and a star (★), respectively. The upper whisker indicates the largest DBH value, while the lower whisker shows the smallest. The plus sign (+) indicates the maximum DBHBack to article page