GIS Helps Evaluate Soil’s Ability to Retain Earth’s Carbon

…from Environmental Expert

“The study evaluated AAAWD of Ca2+ from 1994 to 2003 within the continental United States by soil order, using spatial analysis of Ca2+ wet deposition data obtained from the National Atmospheric Deposition Program (NADP) and the State Soil Geographic (STATSGO) Database from the Natural Resources Conservation Service of the U.S. Department of Agriculture. Using geographic information system (GIS) software, spatial data layers were developed and averaged to create a final Ca2+ wet deposition map layer. The total Ca2+ wet deposition per soil order (in kg) was then calculated by combining the final average Ca2+ wet deposition map layer with the generalized soil order data layer.”