Start Date: Apr 11, 2012
End Date: Feb 08, 2014
Sites will be identified in the U.S. Great Plains and Russian Central Uplands where trees have been planted on former agricultural lands. Soil samples will be collected in transects across the tree row and, with tree tissue samples and undisturbed soil samples from native vegetation, will be analyzed using stable carbon isotope analysis. This approach will quantify changes in soil carbon beneath the trees and identify what proportion of the carbon was derived from the trees. Tree height and diameter measurements will be used to estimate the energy equivalent of the standing woody biomass. Using GIS and modeling techniques, the results of the field studies will be extrapolated to the regional scale to estimate the bionergy and carbon sequestration potential of tree planting on marginal agricultural lands.