Active layer depths: Survey Line Fire (2004 - Present)

In 2001 the Survey Line Fire burned an area of black spruce forest along the Tanana River adjacent to the Bonanza Creek Experimental Forest. In 2002 two research sites were established within the burn, one in a dry area and one in a wet area. When wildfire burns through a northern black spruce forest there is usually a subsequent increase in depth of thaw, due to the reduction in the depth of the organic layer. Thaw depth is being measured annually at tweny points within each of these sites.