Chart: Annual Large Forest and Shrub and Grassland Fires

by
Anthony LeRoy Westerling

 

Original image below

 

Human and lightning-ignited annual large forest fires, (a), grass and shrubland fires (b), forest burned area (c), and grass and shrub burned area (d), on Forest Service, Park Service and Indian Lands in the western US. Horizontal lines indicate decadal averages.