401951.fig.003a
(a)
401951.fig.003b
(b)
Figure 3: Estimates of (a) average annual county-level change and (b) total relative change of dogwood tress for all FIA regional units comprising the Appalachian ecoregion. **Denotes a significant difference between Time 1 and Time 2 (alpha = 0.05). State boundary shapefile is provided by ESRI. FIA Unit boundary shapefile is provided by Joe McCollum, USDA Forest Service, Southern Research Station Forest Inventory & Analysis.