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Deep burning around the base of white spruce consumed all unincorporated organic matter. The mineral soil discovered with a layer of nearly pure ash. Used as illustration, Fig. 21, page 74, USDA Tech. Bull No. 1133, March 1956.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: forest fires
benefits of fire control: injurious effects of fire
Location: Alaska; Interior
Description: Deep burning around the base of white spruce consumed all unincorporated organic matter. The mineral soil discovered with a layer of nearly pure ash. Used as illustration, Fig. 21, page 74, USDA Tech. Bull No. 1133, March 1956.
Date: 1950