Accuracy and Precision of Tidal Wetland Soil Carbon Mapping in the Conterminous United States.

ABSTRACT: Tidal wetlands produce long-term soil organic carbon (C) stocks. Thus for carbon accounting purposes, we need accurate and precise information on the magnitude and spatial distribution of those stocks. We assembled and analyzed an unprecedented soil core dataset, and tested three strategies for mapping carbon stocks: applying the average value from the synthesis to mapped tidal wetlands, applying models fit using empirical data and applied using soil, vegetation and salinity maps, and relying on independently generated soil carbon maps. Soil carbon stocks were far lower on average and varied less spatially and with depth than stocks calculated from available soils maps. Further, variation in carbon density was not well-predicted based on climate, salinity, vegetation, or soil classes. Inst

SUBMITTER: Holmquist JR 

PROVIDER: S-EPMC6013439 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature