Soil Organic Carbon Stock Estimates with Uncertainty across Latin America

Description

This dataset provides 5 x 5 km gridded estimates of soil organic carbon (SOC) across Latin America that were derived from existing point soil characterization data and compiled environmental prediction factors for SOC. This dataset is representative for the period between 1980 to 2000s corresponding with the highest density of observations available in the WoSIS system and the covariates used as prediction factors for soil organic carbon across Latin America. SOC stocks (kg/m2) were estimated for the SOC and bulk density point measurements and a spatially explicit measure of the SOC estimation error was also calculated. A modeling ensemble, using a linear combination of five statistical methods (regression Kriging, random forest, kernel weighted nearest neighbors, partial least squared regression and support vector machines) was applied to the SOC stock data at (1) country-specific and (2) regional scales to develop gridded SOC estimates (kg/m2) for all of Latin America. Uncertainty estimates are provided for the two model predictions based on independent model residuals and their full conditional response to the SOC prediction factors.

Resources

Name Format Description Link
25 CMS: Country-specific Soil Organic Carbon Estimates across Latin America: SOC_estimates_LatinAmerica.kmz https://data.ornldaac.earthdata.nasa.gov/public/cms/Country_SOC_Latin_America/comp/SOC_estimates_LatinAmerica.kmz
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/CMS/guides/Country_SOC_Latin_America.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1615
8 CMS: Country-specific Soil Organic Carbon Estimates across Latin America: background_variables_description.csv https://data.ornldaac.earthdata.nasa.gov/public/cms/Country_SOC_Latin_America/comp/background_variables_description.csv
33 CMS: Country-specific Soil Organic Carbon Estimates across Latin America: Country_SOC_Latin_America.pdf https://data.ornldaac.earthdata.nasa.gov/public/cms/Country_SOC_Latin_America/comp/Country_SOC_Latin_America.pdf
57 CMS: Country-specific Soil Organic Carbon Estimates across Latin America: SOC_estimates_LatinAmerica.zip https://data.ornldaac.earthdata.nasa.gov/public/cms/Country_SOC_Latin_America/comp/SOC_estimates_LatinAmerica.zip
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1615
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/cms/Country_SOC_Latin_America/
48 CMS: Country-specific Soil Organic Carbon Estimates across Latin America: background_variables.tif https://data.ornldaac.earthdata.nasa.gov/public/cms/Country_SOC_Latin_America/comp/background_variables.tif
34 Country-specific (a) and regional (b) predictions of SOC across Latin America based on a linear ensemble of methods. The units are presented in units of Mg per ha for visualization purposes. The data provided with the dataset are in units of kg per m2. Image is from Guevara et al. (2018). https://daac.ornl.gov/CMS/guides/Country_SOC_Latin_America_Fig1.png

Tags

  • soils
  • land-surface
  • earth-science

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