Fig. 2: Contribution of isolated and scattered dead trees.
From: Scattered tree death contributes to substantial forest loss in California
a–c examples of individual dead tree segmentation in multiple scenarios. In each panel, the upper rows are the NAIP true colour images, while the bottom rows present dead tree crowns (red shapes) in predictions. The ticks around each frame represent 30 × 30 m grids. d total count and cumulative percentage of total dead trees for 30 × 30 m grids with a number of dead trees ranging from 1 to 47. The cumulative counts of dead trees were derived directly by aggregating the individual dead tree segmentations without applying bias correction (Methods). e Percentage of tree mortality (count and area) grouped by number of dead trees within a 30 × 30 m grid for areas that were not mapped in Global Forest Change v1.9 (2000–2020)27.
