Experimental enclosures are being built to provide warming from the tree tops to the deep soil (–2 m to –3 m). The open-topped enclosures encompass 12-m diameter internal study areas, with 8-m tall side walls. A subsurface corral isolates the belowground peat environment for measures of local hydrologic conditions. Aboveground warming enclosures are in the final phase of construction. More images available at http://mnspruce.ornl.gov/.
Credit or Source: Office of Biological and Environmental Research of the U.S. Department of Energy Office of Science. science.energy.gov/ber/
U.S. DOE. July 2015. Spruce and Peatland Responses Under Climatic and Environmental Change. U.S. Department of Energy Office of Science. (PDF)