Bedrock nitrogen inputs support litter nitrogen fixation and temperate forest ecosystem fertility

Katherine A Dynarski1, Scott Allen Mitchell2, Scott Morford2 and Benjamin Z Houlton3, (1)USDA-NRCS National Soil Survey Center, Lincoln, United States, (2)University of California Davis, Davis, CA, United States, (3)University of California Davis, Department of Land, Air and Water Resources, Davis, CA, United States